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UNITED STATES

SECURITIES AND EXCHANGE COMMISSION

Washington, D.C. 20549

FORM 10-K

for the fiscal year ended December 31, 2012.

or

for the transition period from                      to                     .

Commission file number: 001-34200

PROSHARES TRUST II

(Exact name of registrant as specified in its charter)

c/o ProShare Capital Management LLC

7501 Wisconsin Avenue, Suite 1000

Bethesda, Maryland 20814

(Address of principal executive offices) (Zip Code)

(240) 497-6400

(Registrant’s telephone number, including area code)

Securities registered pursuant to Section 12(b) of the Act:

Securities registered pursuant to Section 12(g) of the Act: None

Indicate by check mark if the registrant is a well-known seasoned issuer, as defined in Rule 405 of the Securities Act.    x  Yes    ¨  No

Indicate by check mark if the registrant is not required to file reports pursuant to Section 13 or Section 15(d) of the Act.    ¨  Yes    x  No

Indicate by check mark whether the registrant (1) has filed all reports required to be filed by Section 13 or 15(d) of the Securities Exchange Act of 1934 during the preceding 12 months (or for such shorter period that the registrant was required to file such reports), and (2) has been subject to such filing requirements for the past 90 days.    x  Yes    ¨  No

Indicate by check mark whether the registrant has submitted electronically and posted on its corporate Website, if any, every Interactive Data File required to be submitted and posted pursuant to Rule 405 of Regulation S-T (§232.405 of this chapter) during the preceding 12 months (or for such shorter period that the registrant was required to submit and post such files).    x  Yes    ¨  No

Indicate by check mark if disclosure of delinquent filers pursuant to Item 405 of Regulation S-K (§229.405 of this chapter) is not contained herein, and will not be contained, to the best of registrant’s knowledge, in definitive proxy or information statements incorporated by reference in Part III of this Form 10-K or any amendment to this Form 10-K.  x

Indicate by check mark whether the registrant is a large accelerated filer, an accelerated filer, a non-accelerated filer or a smaller reporting company. See the definitions of “large accelerated filer,” “accelerated filer” and “smaller reporting company” in Rule 12b-2 of the Exchange Act.

Indicate by check mark whether the registrant is a shell company (as defined in Rule 12b-2 of the Exchange Act.).    ¨  Yes    x  No

The aggregate market value of each Fund’s units held by non-affiliates as of June 30, 2012 and the number of outstanding units for each Fund as of February 22, 2013 are included in the table below.

DOCUMENTS INCORPORATED BY REFERENCE:

None.

THE FINANCIAL STATEMENT SCHEDULES CONTAINED IN PART IV OF THIS ANNUAL REPORT ON FORM 10-K CONSTITUTE THE ANNUAL REPORT WITH RESPECT TO THE COMMODITY POOLS FOR PURPOSES OF COMMODITY FUTURES TRADING COMMISSION RULE 4.22(C)

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PROSHARES TRUST II

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Part I

Item 1. Business.

Summary

ProShares Trust II (formerly known as the Commodities and Currencies Trust) (the “Trust”) is a Delaware statutory trust formed on October 9, 2007 and currently organized into separate series (each, a “Fund” and collectively, the “Funds”). As of December 31, 2012, the following twenty-one series of the Trust have commenced investment operations: (i) ProShares Ultra DJ-UBS Commodity, ProShares UltraShort DJ-UBS Commodity, ProShares Ultra DJ-UBS Crude Oil, ProShares UltraShort DJ-UBS Crude Oil, ProShares Ultra DJ-UBS Natural Gas, ProShares UltraShort DJ-UBS Natural Gas, ProShares Ultra Gold, ProShares UltraShort Gold, ProShares Ultra Silver, ProShares UltraShort Silver, ProShares Ultra Australian Dollar, ProShares UltraShort Australian Dollar, ProShares Ultra Euro, ProShares UltraShort Euro, ProShares Ultra Yen and ProShares UltraShort Yen (each, a “Leveraged Fund” and, together with ProShares UltraPro Short Euro (listed below), the “Leveraged Funds”); (ii) ProShares Short Euro (the “Short Euro Fund”); (iii) ProShares Ultra VIX Short-Term Futures ETF and ProShares Short VIX Short-Term Futures ETF (each, a “Geared VIX Fund” and collectively, the “Geared VIX Funds”); and (iv) ProShares VIX Short-Term Futures ETF and ProShares VIX Mid-Term Futures ETF (each, a “Matching VIX Fund” and collectively, the “Matching VIX Funds”). Each of the Funds listed above issues common units of beneficial interest (“Shares”), which represent units of fractional undivided beneficial interest in and ownership of only that Leveraged Fund, Short Euro Fund, Geared VIX Fund or Matching VIX Fund. The Shares of each Leveraged Fund, the Short Euro Fund, each Geared VIX Fund and each Matching VIX Fund are listed on the New York Stock Exchange Archipelago (“NYSE Arca”), as further described below. The Leveraged Funds, the Short Euro Fund and the Geared VIX Funds are collectively referred to as the “Geared Funds” in this Annual Report on Form 10-K. The Geared VIX Funds and the Matching VIX Funds are collectively referred to as the “VIX Funds” in this Annual Report on Form 10-K.

The Trust registered shares for thirty-two additional series: (i) ProShares Short DJ-UBS Natural Gas and ProShares Short Gold (collectively, the “Short Funds”); (ii) ProShares UltraShort VIX Short-Term Futures ETF, ProShares Ultra VIX Mid-Term Futures ETF, ProShares Short VIX Mid-Term Futures ETF and ProShares UltraShort VIX Mid-Term Futures ETF (collectively, the “New Geared VIX Funds”); (iii) ProShares Managed Futures Strategy and ProShares Commodity Managed Futures Strategy (each, a “Managed Futures Fund” and collectively, the “Managed Futures Funds”); (iv) ProShares Financial Managed Futures Strategy; (v) ProShares UltraPro Australian Dollar, ProShares Short Australian Dollar, ProShares UltraPro Short Australian Dollar, ProShares UltraPro Canadian Dollar, ProShares Ultra Canadian Dollar, ProShares Short Canadian Dollar, ProShares UltraShort Canadian Dollar, ProShares UltraPro Short Canadian Dollar, ProShares UltraPro Euro, ProShares UltraPro Short Euro, ProShares UltraPro Swiss Franc, ProShares Ultra Swiss Franc, ProShares Short Swiss Franc, ProShares UltraShort Swiss Franc, ProShares UltraPro Short Swiss Franc, ProShares UltraPro Yen, ProShares Short Yen and ProShares UltraPro Short Yen; and (vi) ProShares UltraPro U.S. Dollar, ProShares Ultra U.S. Dollar, ProShares Short U.S. Dollar, ProShares UltraShort U.S. Dollar and ProShares UltraPro Short U.S. Dollar (collectively, the “Currency Index Funds”). ProShares UltraPro Short Euro and the Managed Futures Funds are collectively referred to as the “New Funds” in this Annual Report on Form 10-K.

On June 25, 2012, the registered offerings for ProShares UltraPro Australian Dollar, ProShares Short Australian Dollar, ProShares UltraPro Short Australian Dollar, ProShares UltraPro Canadian Dollar, ProShares Short Canadian Dollar, ProShares UltraPro Short Canadian Dollar, ProShares UltraPro Euro, ProShares UltraPro Short Euro, ProShares UltraPro Swiss Franc, ProShares Short Swiss Franc, ProShares UltraPro Short Swiss Franc, ProShares UltraPro Yen, ProShares UltraPro Short Yen and each Currency Index Fund, each of which had never been publicly offered, were terminated. On June 26, 2012, the registered offerings for the Short Funds and the New Geared VIX Funds, each of which had never been publicly offered, were terminated. On September 28, 2012, the registered offerings for ProShares Ultra Canadian Dollar, ProShares UltraShort Canadian Dollar, ProShares Ultra Swiss Franc, ProShares UltraShort Swiss Franc and ProShares Short Yen, each of which had never been publicly offered, were terminated. On December 5, 2012, a new offering of ProShares UltraPro Short Euro was registered on a Form S-1 Registration Statement (No. 333-185288). On January 30, 2013, the registered offering for ProShares Financial Managed Futures Strategy, which had never been publicly offered, was terminated. Thus, as of December 31, 2012, the only Funds that have registered amounts, in addition to the twenty-one series of the Trust that have commenced investment operations, are the New Funds.

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As of December 31, 2012, each of the New Funds had seed capital, but none of the New Funds had commenced investment operations; therefore, this Annual Report on Form 10-K does not include Schedules of Investments, Statements of Operations, Statements of Changes in Shareholders’ Equity, Statements of Cash Flows, results of operations or any other financial information for the New Funds.

Groups of Funds are collectively referred to in this Annual Report on Form 10-K in several different ways. References to “Ultra Funds,” “Short Funds,” “UltraShort Funds” or “UltraPro Short Funds” refer to the different Funds based upon their investment objectives, but without distinguishing among the Funds’ benchmarks. References to “Commodity Index Funds,” “Commodity Funds” or “Currency Funds” refer to the different Funds according to their general benchmark categories without distinguishing among the Funds’ investment objectives or Fund-specific benchmarks. References to “VIX Funds” refer to the different Funds based upon their investment objective and their general benchmark categories. References to “Managed Futures Funds” refer to the different Funds according to which index the Fund intends to gain exposure.

As further described below, each “Ultra” Fund seeks daily investment results (before fees and expenses) that correspond to two times (2x) the daily performance of its corresponding benchmark. Each “Short” Fund seeks daily investment results (before fees and expenses) that correspond to the inverse (-1x) of the daily performance of its corresponding benchmark. Each “UltraShort” Fund seeks daily investment results (before fees and expenses) that correspond to two times the inverse (-2x) of the daily performance of its corresponding benchmark. The “UltraPro Short” Fund will seek daily investment results (before fees and expenses) that correspond to three times the inverse (-3x) of the daily performance of its corresponding benchmark. Daily performance is measured from the calculation of one net asset value per Share (“NAV”) to the next.

Each of the Funds generally invests or will invest in Financial Instruments (i.e., instruments whose value is derived from the value of an underlying asset, rate or index, including futures contracts, swap agreements, forward contracts and other instruments) as a substitute for investing directly in commodities, currencies or spot volatility products in order to gain exposure to the commodity futures index, commodity, currency exchange rate, equity volatility index or applicable commodity or financial futures contracts. Financial Instruments also are used to produce economically “leveraged”, “inverse” or “inverse leveraged” investment results for the Geared Funds.

Each Geared Fund seeks or will seek investment results for a single day only, not for longer periods. This is different from most exchange-traded funds and means that the return of such Geared Fund for a period longer than a single trading day will be the result of each day’s returns compounded over the period, and usually will differ from 2x, -1x, -2x or -3x of the return of the Geared Fund’s benchmark for that period. A Geared Fund will lose money if its benchmark’s performance is flat over time, and it is possible for a Geared Fund to lose money over time even if its benchmark’s performance increases (or decreases, in the case of a Short, UltraShort, or UltraPro Short Fund). Longer holding periods, higher benchmark volatility, inverse exposure and greater leverage each affect the impact of compounding on a Geared Fund’s returns. Daily compounding of a Geared Fund’s investment returns can dramatically and adversely affect its longer-term performance during periods of high volatility. Geared Funds are riskier than similarly benchmarked exchange-traded funds that are not geared. Accordingly, these funds may not be suitable for all investors and should be used only by knowledgeable investors who understand the potential consequences of seeking daily leveraged, inverse or inverse leveraged investment results. Shareholders who invest in the Geared Funds should actively manage and monitor their investments, as frequently as daily.

The Matching VIX Funds and the Managed Futures Funds seek to achieve their stated investment objective both over a single day and over time.

Each Geared Fund and Managed Futures Fund continuously offers and redeems, or will offer and redeem, its Shares in blocks of 50,000 Shares. Each Matching VIX Fund continuously offers and redeems shares in blocks of 25,000 Shares (each such block a “Creation Unit”). Only Authorized Participants may purchase and redeem Shares from a Fund and then only in Creation Units. An Authorized Participant is an entity that has entered into an Authorized Participant Agreement with one or more of the Funds. Shares of the Funds are offered to Authorized Participants in Creation Units at each Fund’s respective NAV. Authorized Participants may then offer to the public, from time to

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time, Shares from any Creation Unit they create at a per-Share market price that varies depending on, among other factors, the trading price of the Shares of each Fund on the NYSE Arca, the NAV and the supply of and demand for the Shares at the time of the offer. Shares from the same Creation Unit may be offered at different times and may have different offering prices based upon the above factors. The form of Authorized Participant Agreement and related Authorized Participant Handbook set forth the terms and conditions under which an Authorized Participant may purchase or redeem a Creation Unit. Authorized Participants do not receive from any Fund, the Sponsor, or any of their affiliates, any underwriting fees or compensation in connection with their sale of Shares to the public.

As of December 31, 2012, ProShare Capital Management LLC, a Maryland limited liability company, served as the Trust’s Sponsor (the “Sponsor”), commodity pool operator and commodity trading advisor. On February 19, 2013, the Sponsor’s commodity trading advisor registration was withdrawn. Wilmington Trust Company serves as the Trustee of the Trust (the “Trustee”). The Funds are commodity pools, as defined in the Commodity Exchange Act (the “CEA”) and the applicable regulations of the Commodity Futures Trading Commission (the “CFTC”) and are operated by the Sponsor, a commodity pool operator registered with the CFTC. The Trust is not an investment company registered under the Investment Company Act of 1940, as amended (the “1940 Act”).

The Sponsor maintains an Internet website at www.ProShares.com, through which monthly account statements and the Trust’s Annual Report on Form 10-K, Quarterly Reports on Form 10-Q, Current Reports on Form 8-K and amendments to those reports filed or furnished pursuant to Section 13(a) or 15(d) of the Securities Exchange Act of 1934, as amended (the “1934 Act”), can be accessed free of charge, as soon as reasonably practicable after such material is electronically filed with, or furnished to, the U.S. Securities and Exchange Commission (the “SEC”). Additional information regarding the Trust may also be found on the SEC’s EDGAR database at www.sec.gov.

Investment Objectives and Principal Investment Strategies

Investment Objectives

The Geared Funds

Investment Objectives of the “Ultra” Funds

Each “Ultra” Fund seeks daily investment results (before fees and expenses) that correspond to two times (2x) the daily performance, whether positive or negative, of the corresponding benchmark shown below. Expenses may include, among other things, costs related to the purchase, sale and storage of commodities or currencies and the cost of leverage, all of which may be embedded in Financial Instruments used by that Fund. If an Ultra Fund is successful in meeting its objective, its value on a given day (before fees and expenses) should gain approximately two times as much on a percentage basis as its corresponding benchmark when the benchmark rises. Conversely, its value on a given day (before fees and expenses) should lose approximately two times as much on a percentage basis as the corresponding benchmark when the benchmark declines. Each Ultra Fund acquires long exposure in any one of or combinations of Financial Instruments, including Financial Instruments with respect to the applicable Ultra Fund’s benchmark such that each Ultra Fund has exposure intended to approximate two times (2x) its corresponding benchmark at the time of its NAV calculation.

Investment Objectives of the “Short” Funds

Each “Short” Fund seeks daily investment results (before fees and expenses) that correspond to the inverse (-1x) of the daily performance, whether positive or negative, of the corresponding benchmark shown below. Expenses may include, among other things, costs related to the purchase, sale and storage of commodities or currencies and the cost of leverage, all of which may be embedded in Financial Instruments used by that Fund. If a Short Fund is successful in meeting its objective, its value on a given day (before fees and expenses) should gain approximately as much on a percentage basis as its corresponding benchmark when the benchmark falls. Conversely, its value on a given day (before fees and expenses) should lose approximately as much on a percentage basis as the corresponding benchmark when the benchmark rises. Each Short Fund will acquire short exposure in any one of or combinations of Financial Instruments, including Financial Instruments with respect to the applicable Short Fund’s benchmark, such that each Short Fund has exposure intended to approximate the inverse (-1x) of its corresponding benchmark at the time of its NAV calculation.

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Investment Objectives of the “UltraShort” Funds

Each “UltraShort” Fund seeks daily investment results (before fees and expenses) that correspond to two times the inverse (-2x) of the daily performance, whether positive or negative, of the corresponding benchmark shown below. Expenses may include, among other things, costs related to the purchase, sale and storage of commodities or currencies and the cost of leverage, all of which may be embedded in Financial Instruments used by that Fund. If an UltraShort Fund is successful in meeting its objective, its value on a given day (before fees and expenses) should gain approximately two times as much on a percentage basis as its corresponding benchmark when the benchmark falls. Conversely, its value on a given day (before fees and expenses) should lose approximately two times as much on a percentage basis as the corresponding benchmark when the benchmark rises. Each UltraShort Fund acquires short exposure in any one of or combinations of Financial Instruments, including Financial Instruments with respect to the applicable UltraShort Fund’s benchmark, such that each UltraShort Fund has exposure intended to approximate two times the inverse (-2x) of its corresponding benchmark at the time of its NAV calculation.

Investment Objectives of the “UltraPro Short” Fund

The “UltraPro Short” Fund will seek daily investment results (before fees and expenses) that correspond to three times the inverse (-3x) of the daily performance, whether positive or negative, of the corresponding benchmark shown below. Expenses may include, among other things, costs related to the purchase, sale and storage of commodities or currencies and the cost of leverage, all of which may be embedded in Financial Instruments used by that Fund. If the UltraPro Short Fund is successful in meeting its objective, its value on a given day (before fees and expenses) should gain approximately three times as much on a percentage basis as its corresponding benchmark when the benchmark falls. Conversely, its value on a given day (before fees and expenses) should lose approximately three times as much on a percentage basis as the corresponding benchmark when the benchmark rises. The UltraPro Short Fund will acquire short exposure in any one of or combinations of Financial Instruments, including Financial Instruments with respect to the UltraPro Short Fund’s benchmark, such that the UltraPro Short Fund will have exposure intended to approximate three times the inverse (-3x) of its corresponding benchmark at the time of its NAV calculation.

The Matching VIX Funds

Investment Objectives of the “Matching VIX” Funds

Each “Matching VIX” Fund seeks results (before fees and expenses), both over a single day and over time, that match the performance of the S&P 500 VIX Short-Term Futures Index (the “Short-Term VIX Index”) or the S&P 500 VIX Mid-Term Futures Index (the “Mid-Term VIX Index”) (each a “VIX Futures Index,” and together, the “VIX Futures Indexes”). The VIX Futures Indexes seek to offer exposure to forward market equity volatility through publicly traded futures markets. If a Matching VIX Fund is successful in meeting its objective, its value (before fees and expenses) should gain approximately as much on a percentage basis as the level of its corresponding VIX Futures Index when the benchmark rises. Conversely, its value (before fees and expenses) should lose approximately as much on a percentage basis as the level of its benchmark when the benchmark declines. Each Matching VIX Fund acquires exposure through futures contracts (“VIX futures contracts”), such that each Matching VIX Fund has exposure intended to approximate its applicable VIX Futures Index at the time of its NAV calculation. The VIX Futures Indexes track the performance of VIX futures contracts; they do not track the performance of the Chicago Board Options Exchange (“CBOE”) Volatility Index (the “VIX”), and the Matching VIX Funds should not be expected to match the performance of the VIX.

The Managed Futures Funds

Investment Objectives of the “Managed Futures” Funds

Each “Managed Futures” Fund will seek to provide investment results (before fees and expenses) that correspond to the performance of the S&P Dynamic Futures Index (the “DFI”) or the S&P Dynamic Commodities Futures Index (the “DCFI”, or a “Sub-Index”), as applicable. ProShares Managed Futures Strategy will seek to provide investment results corresponding to the DFI, while ProShares Commodity Managed Futures Strategy will seek to provide investment results corresponding to the DCFI. The DFI is designed to capture the economic benefit derived from

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both rising and declining trends in the prices of futures contracts on sixteen different tangible commodities (the “Commodity Futures Contracts”) and futures contracts on eight different financials, such as major currencies and U.S. Treasury securities (the “Financial Futures Contracts” and together with the Commodity Futures Contracts, the “Index Components”), generally without leverage. The DCFI is designed to capture the economic benefit derived from both rising and declining trends in the prices of futures contracts on sixteen different tangible commodities (the “Commodity Futures Contracts”) and futures contracts on eight different financials, such as major currencies (and U.S. Treasury Securities (the “Financial Futures Contracts” and together with the Commodity Futures Contracts, the “Index Components”)). If a Managed Futures Fund is successful in meeting its objective, its value (before fees and expenses) should gain approximately as much on a percentage basis as the level of the DFI or its Sub-Index when the DFI or its Sub-Index rises. Conversely, its value (before fees and expenses) should lose approximately as much on a percentage basis as the level of the DFI or its Sub-Index when the DFI or its Sub-Index declines. Each Fund acquires exposure through the Financial Instruments, such that the Fund has exposure intended to approximate the DFI or its Sub-Index at the time of its NAV calculation.

The corresponding benchmark for each Fund is listed below:

ProShares Ultra DJ-UBS Commodity and ProShares UltraShort DJ-UBS Commodity: The Dow Jones-UBS Commodity Index^SM. The Dow Jones-UBS Commodity Index is designed to track commodity futures prices.

ProShares Ultra DJ-UBS Crude Oil and ProShares UltraShort DJ-UBS Crude Oil: The Dow Jones-UBS WTI Crude Oil Subindex^SM. The Dow Jones-UBS WTI Crude Oil Subindex is designed to track crude oil futures prices.

ProShares Ultra DJ-UBS Natural Gas and ProShares UltraShort DJ-UBS Natural Gas: The Dow Jones-UBS Natural Gas Subindex^SM. The Dow Jones-UBS Natural Gas Subindex is designed to track natural gas futures prices traded on the NYMEX.

ProShares Ultra Gold and ProShares UltraShort Gold: The daily performance of gold bullion as measured by the U.S. Dollar p.m. fixing price for delivery in London.

ProShares Ultra Silver and ProShares UltraShort Silver: The daily performance of silver bullion as measured by the U.S. Dollar fixing price for delivery in London.

ProShares Ultra Australian Dollar and ProShares UltraShort Australian Dollar: The 4:00 p.m. (Eastern Time) spot price of the Australian dollar versus the U.S. dollar using Australian dollar/U.S. dollar exchange rate, expressed in terms of U.S. dollars per unit of foreign currency.

ProShares Ultra Euro, ProShares Short Euro, ProShares UltraShort Euro and ProShares UltraPro Short Euro: The 4:00 p.m. (Eastern Time) spot price of the Euro versus the U.S. Dollar using Euro exchange rate, expressed in terms of U.S. dollars per unit of foreign currency.

ProShares Ultra Yen and ProShares UltraShort Yen: The 4:00 p.m. (Eastern Time) spot price of the Japanese yen versus the U.S. Dollar using the Japanese yen exchange rate, expressed in terms of U.S. Dollars per unit of foreign currency.

ProShares Ultra VIX Short-Term Futures, ProShares VIX Short-Term Futures and ProShares Short VIX Short-Term Futures: The S&P 500 VIX Short-Term Futures Index. The S&P 500 VIX Short-Term Futures Index is designed to measure the return from a rolling long position in the first and second month VIX futures contracts.

ProShares VIX Mid-Term Futures: The S&P 500 VIX Mid-Term Futures Index. The S&P 500 VIX Mid-Term Futures Index is designed to measure the return from a rolling long position in the fourth, fifth, sixth and seventh month VIX futures contracts.

ProShares Managed Futures Strategy and ProShares Commodity Managed Futures Strategy: The DFI or its Sub-Index. The DFI and the DCFI are designed to attempt to capture the economic benefit derived from both rising and declining trends in futures prices.

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Principal Investment Strategies

In seeking to achieve each Fund’s investment objective, the Sponsor uses a mathematical approach to investing. Using this approach, the Sponsor determines the type, quantity and mix of investment positions, including derivative positions, which the Sponsor believes in combination, should produce daily returns consistent with a Fund’s objective. The Sponsor relies upon a pre-determined model to generate orders that result in repositioning each Fund’s investments in accordance with their daily investment objectives. Each Geared Fund invests or will invest principally in any one of or combinations of Financial Instruments, including swap agreements, futures contracts, options on futures contracts or forward contracts with respect to the applicable Fund’s benchmark to the extent determined appropriate by the Sponsor. The types of commodity or currency interests in which each Commodity Fund, Commodity Index Fund or Currency Fund invests may vary daily. The Funds do not currently intend to invest directly in any commodity or currency. Each VIX Fund intends to obtain exposure to the applicable equity market volatility index by primarily investing in VIX futures contracts based on the VIX. Each Managed Futures Fund intends to obtain exposure to the DFI or to a Sub-Index, as applicable, by primarily investing in Commodity Futures Contracts or Financial Futures Contracts. Each Fund will also hold cash or cash equivalents such as U.S. Treasury securities or other high credit quality short-term fixed-income securities (such as shares of money market funds and collateralized repurchase agreements) for direct investment or that may be used as margin or serve as collateral for the Financial Instruments.

The Sponsor does not invest the assets of the Funds in Financial Instruments or other assets based on its view of the investment merit of a particular investment, other than for cash management purposes, nor does it conduct conventional commodity or currency research or analysis, or forecast market movement or trends, in managing the assets of the Funds. Each Fund seeks to remain fully exposed at all times to the Fund’s underlying benchmark without regard to market conditions, trends or direction.

For the Commodity Index Funds, the VIX Funds and the Managed Futures Funds, a Fund may hold through Financial Instruments a representative sample of the components in its underlying index, which has aggregate characteristics similar to those of the underlying index. This “sampling” process typically involves selecting a representative sample of components in an index principally to enhance liquidity and reduce transaction costs while seeking to maintain high correlation with, and similar aggregate characteristics (e.g., underlying commodities and valuations) to, the underlying index. In addition, a Commodity Index Fund, a VIX Fund or a Managed Futures Fund may obtain exposure to components not included in the underlying index, invest in assets that are not included in the underlying index or may overweigh or underweigh certain components contained in the underlying index. For further discussion of the Financial Instruments, see “Information About Financial Instruments and Commodities Markets” below.

Information About Financial Instruments and Commodities Markets

Swap Agreements

Swap agreements are two-party contracts entered into primarily by institutional investors for a specified period ranging from a day to more than a year. In a standard swap transaction, the parties agree to exchange the returns on a particular predetermined investment, instrument or index in exchange for a fixed or floating rate of return (the “interest rate leg”, which will also include the cost of borrowing for short swaps) in respect of a predetermined notional amount. The gross returns to be exchanged are calculated with respect to a notional amount and the benchmark returns to which the swap is linked. Swaps are usually closed out on a net basis, that is, the two payment streams are netted out in a cash settlement on the payment date or dates specified in the agreement with the parties receiving or paying, as the case may be, only the net amount of the two payments. Thus, while the notional amount reflects a Fund’s total investment exposure under the swap agreement (i.e., the entire face amount or principal of a swap agreement), the net amount is a Fund’s current obligations (or rights) under the swap agreement, which is the net amount to be paid or received under the agreement based on the relative values of the positions held by each party to the agreement on any given termination date. In a typical swap agreement entered into by an UltraShort Fund or the UltraPro Short Fund, absent fees, transaction costs and interest, such Fund would be required to make payments to the swap counterparty in the event the benchmark increases and would be entitled to settlement payments in the event the benchmark decreases. In a typical swap agreement entered into by an Ultra Fund or the UltraPro Fund, absent fees, transaction costs and interest, the Ultra Fund or UltraPro Fund would be entitled to

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settlement payments in the event the benchmark increases and would be required to make payments to the swap counterparty in the event the benchmark decreases. In the case of futures contracts based indices, such as those used by the Commodity Index Funds; the reference interest rate is zero, although a financing spread or fee is normally still applied.

Swap agreements involve, to varying degrees, elements of market risk and exposure to loss in excess of the amount which would be reflected on the Statement of Financial Condition. The notional amounts of the agreement reflect the extent of each Ultra Fund’s total investment exposure under the swap agreement. An UltraShort Fund’s or the UltraPro Short Fund’s exposure is not limited by the notional amount and its exposure is in theory potentially infinite as there is no fixed limit on the increase in any index value. The primary risks associated with the use of swap agreements arise from the imperfect correlation between movements in the notional amount and the price of the underlying investments and the inability of counterparties to perform. Each Fund bears the risk of loss of the net amount, if any, expected to be received under a swap agreement in the event of the default or bankruptcy of a swap counterparty. Each Fund typically enters into swap agreements only with major global financial institutions; however, there are no limitations on the percentage of its assets each Fund may invest in swap agreements with a particular counterparty. Each Fund that invests in swaps may use various techniques to minimize credit risk including early termination or reset and payment, using different counterparties and limiting the net amount due from any individual counterparty.

Each Fund that invests in swaps generally collateralizes the swap agreements with cash and/or certain securities. Such collateral is generally held for the benefit of the counterparty in a segregated tri-party account at the custodian to protect the counterparty against non-payment by the Fund. The counterparty also may collateralize the swap agreements with cash and/or certain securities, which collateral is typically held for the benefit of the Fund in a segregated tri-party account at the custodian. In the event of a default by the counterparty, and the Fund is owed money in the swap transaction, the Fund will seek withdrawal of this collateral from the segregated account and may incur certain costs exercising its right with respect to the collateral. These Funds may remain subject to credit risk with respect to the amount it expects to receive from counterparties. The Funds have sought to mitigate these risks by generally requiring that the counterparties for each Fund agree to post collateral for the benefit of the Fund, marked to market daily, subject to certain minimum thresholds; however there are no limitations on the percentage of its assets each Fund may invest in swap agreements with a particular counterparty. To the extent any such collateral is insufficient or there are delays in accessing the collateral, the Funds will be exposed to counterparty risk as described above, including possible delays in recovering amounts as a result of bankruptcy proceedings.

Forward Contracts

A forward contract is a contractual obligation to purchase or sell a specified quantity of a commodity or currency at or before a specified date in the future at a specified price and, therefore, is economically similar to a futures contract. Unlike futures contracts, however, forward contracts are typically traded in the over-the-counter (“OTC”) markets and are not standardized contracts. Forward contracts for a given commodity or currency are generally available for various amounts and maturities and are subject to individual negotiation between the parties involved. Moreover, there is generally no direct means of offsetting or closing out a forward contract by taking an offsetting position as one would a futures contract on a U.S. exchange. If a trader desires to close out a forward contract position, he generally will establish an opposite position in the contract but will settle and recognize the profit or loss on both positions simultaneously on the delivery date. Thus, unlike in the futures contract market where a trader who has offset positions will recognize profit or loss immediately, in the forward market a trader with a position that has been offset at a profit will generally not receive such profit until the delivery date, and likewise a trader with a position that has been offset at a loss will generally not have to pay money until the delivery date. In recent years, however, the terms of forward contracts have become more standardized, and in some instances such contracts now provide a right of offset or cash settlement as an alternative to making or taking delivery of the underlying commodity or currency. The primary risks associated with the use of forward contracts arise from the inability of the counterparty to perform.

Each Fund that invests in forward contracts generally collateralizes the forward contracts with cash and/or certain securities. Such collateral is generally held for the benefit of the counterparty in a segregated tri-party account at the Custodian to protect the counterparty against non-payment by the Fund. The counterparty also may collateralize the forward contracts with cash and/or certain securities, which collateral is typically held for the benefit of the Fund in

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a segregated tri-party account at the Custodian. In the event of a default by the counterparty, and the Fund is owed money in the forward transaction, such Fund will seek withdrawal of this collateral from the segregated account and may incur certain costs exercising its right with respect to the collateral. These Funds remain subject to credit risk with respect to the amount it expects to receive from counterparties.

The Funds have sought to mitigate these risks by generally requiring that the counterparties for each Fund agree to post collateral for the benefit of the Fund, marked to market daily, subject to certain minimum thresholds; however, there are no limitations on the percentage of its assets each Fund may invest in forward contracts with a particular counterparty. To the extent any such collateral is insufficient or there are delays in accessing the collateral, the Funds will be exposed to counterparty risk as described above, including possible delays in recovering amounts as a result of bankruptcy proceedings

The forward markets provide what has typically been a highly liquid market for foreign exchange trading, and in certain cases the prices quoted for foreign exchange forward contracts may be more favorable than the prices for foreign exchange futures contracts traded on U.S. exchanges. The forward markets are largely unregulated and liquidity in the market cannot be assured. Forward contracts are, in general, not cleared or guaranteed by a third party. Commercial banks participating in trading foreign exchange forward contracts often do not require margin deposits, but rely upon internal credit limitations and their judgments regarding the creditworthiness of their counterparties. In recent years, however, many OTC market participants in foreign exchange trading have begun to require that their counterparties post margin.

Futures Contracts

A futures contract is a standardized contract traded on, or subject to the rules of, an exchange that calls for the future delivery of a specified quantity and type of commodity at a specified time and place or alternatively, may call for cash settlement as is the case with VIX futures contracts and Managed Futures contracts. Futures contracts are traded on a wide variety of commodities, including bonds, interest rates, agricultural products, stock indices, currencies, energy, metals, economic indicators and statistical measures. The notional size and calendar term of futures contracts on a particular commodity are identical and are not subject to any negotiation, other than with respect to price and the number of contracts traded between the buyer and seller. Each Fund generally deposits cash with a Futures Commission Merchant (“FCM”) for its open positions in futures contracts. Such deposits are generally held for the benefit of the counterparty at the FCM to protect the counterparty against non-payment by the Fund. In the event of default by the counterparty, and the Fund is owed money in the futures contract, the Fund will seek withdrawal of this deposit from the FCM and may incur certain costs exercising its right with respect to the deposited cash.

Certain futures contracts, such as VIX futures contracts (including the futures contracts that comprise each of the VIX Futures Indexes) and Managed Futures contracts, as well as stock index contracts and certain commodity futures contracts, settle in cash, reflecting the difference between the contract purchase/sale price and the contract settlement price. The cash settlement mechanism avoids the potential for either side to have to deliver the underlying asset. For other futures contracts, the contractual obligations of a buyer and seller may generally be satisfied by taking or making physical delivery of the underlying asset or by making an offsetting sale or purchase of an identical futures contract on the same or linked exchange before the designated date of delivery. The difference between the price at which the futures contract is purchased or sold and the price paid for the offsetting sale or purchase, after allowing for brokerage commissions, constitutes the profit or loss to the trader.

Regulations

Futures exchanges in the United States are subject to regulation under the CEA, by the CFTC, the governmental agency having responsibility for regulation of futures exchanges and trading on those exchanges. (Investors should be aware that no governmental U.S. agency currently regulates the OTC foreign exchange markets.)

The CFTC has exclusive authority to designate exchanges for the trading of specific futures contracts and options on futures contracts and to prescribe rules and regulations of the marketing of each. The CFTC also regulates the activities of “commodity trading advisors” and “commodity pool operators” and the CFTC has adopted regulations with respect to certain of such persons’ activities. Pursuant to its authority, the CFTC requires a commodity pool operator, such as the Sponsor, to keep accurate, current and orderly records with respect to each pool it operates. The

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CFTC may suspend, modify or terminate the registration of any registrant for failure to comply with CFTC rules or regulations. Suspension, restriction or termination of the Sponsor’s registration as a commodity pool operator would prevent it, until such time (if any) as such registration were to be reinstated, from managing, and might result in the termination of the Funds. The CEA requires all FCMs to meet and maintain specified fitness and financial requirements, segregate customer funds from proprietary funds and account separately for all customers’ funds and positions, and to maintain specified books and records open to inspection by the staff of the CFTC. See “Item 1A. Risk Factors-Risks Related to Regulatory Requirements and Potential Legislative Changes-Failure of the FCMs to segregate assets may increase losses in the Funds in this Annual Report on Form 10-K.”

The CEA also gives the states certain powers to enforce its provisions and the regulations of the CFTC.

Under certain circumstances, the CEA grants shareholders the right to institute a reparations proceeding before the CFTC against the Sponsor (as a registered commodity pool operator), an FCM, as well as those of their respective employees who are required to be registered under the CEA. Shareholders may also be able to maintain a private right of action for certain violations of the CEA.

Pursuant to authority in the CEA, the National Futures Association (the “NFA”) has been formed and registered with the CFTC as a registered futures association. At the present time, the NFA is the only self regulatory organization for commodities professionals other than exchanges. As such, the NFA promulgates rules governing the conduct of commodity professionals and disciplines those professionals that do not comply with such standards. The CFTC has delegated to the NFA responsibility for the registration of commodity trading advisors, commodity pool operators, FCMs, introducing brokers and their respective associated persons and floor brokers. The Sponsor is a member of the NFA (the Funds themselves are not required to become members of the NFA). As an NFA member, the Sponsor is subject to NFA standards relating to fair trade practices, financial condition, and consumer protection. The CFTC is prohibited by statute from regulating trading on foreign commodity exchanges and markets.

The CEA and CFTC regulations prohibit market abuse and generally require that all futures exchange-based trading be conducted in compliance with rules designed to ensure the integrity of market prices and without any intent to manipulate prices. CFTC regulations and futures exchange rules also impose limits on the size of the positions that a person may hold or control as well as standards for aggregating certain positions. The rules of the CFTC and the futures exchanges also authorize special emergency actions to halt, suspend or limit trading overall or to restrict, halt, suspend or limit the trading of an individual trader or to otherwise impose special reporting or margin requirements. See also “Item 1A. Risk Factors. Regulatory changes or actions, including the implementation of new Legislation, may alter the operations and profitability of the Funds” and “Item 1A. Risk Factors. Regulatory and exchange accountability levels may restrict the creation of Creation Units and the operation of the Trust” in this Annual Report on Form 10-K.

Description of the Dow Jones-UBS Commodity Index ^SM and its Sub-Indexes

Overview of the Dow Jones-UBS Family of Indices

Dow Jones-UBS Commodity Index^SM

The Dow Jones-UBS Commodity Index^SM (the “Dow Jones-UBS”) is designed to be a highly liquid and diversified benchmark for the commodity futures market. It is intended to reflect the overall commodity sector by measuring the performance of commodity futures contracts. The performance of the commodity futures market is often very different than the performance of the physical, or “spot”, commodities market. See “Item 1A. Risk Factors. The Commodity Index Funds are linked to an index comprised of commodity futures contracts, and are not linked to the spot prices of the underlying physical commodities. Commodity futures contracts may perform very differently from the spot price of the underlying physical commodities” in this Annual Report on Form 10-K. Unlike equities, which

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entitle the holder to a continuing stake in a corporation, commodity futures contracts specify a delivery date for the underlying physical commodity or its cash equivalent. The Dow Jones-UBS is a “rolling index,” which means that the Dow Jones-UBS does not take actual physical possession of any commodities; rather, it tracks a rolling futures position. An investor with a rolling futures position is able to avoid delivering (or taking delivery of) underlying physical commodities while maintaining exposure to those commodities. The roll for each index component occurs over a period of five Dow Jones-UBS business days in certain months according to a pre-determined schedule, generally beginning on the fifth business day of the month and ending on the ninth business day. Each day, approximately 20% of each rolling futures position that is included in the month’s roll is rolled, increasing from 0% to 20%, 40%, 60%, 80% and finally 100%. The Dow Jones-UBS is calculated by applying the weighting adjustments at the close of each day, with the adjusted weights used for the next day’s calculation. Not all contracts are rolled every month; generally the futures that underlie the indexes within the Dow Jones-UBS family roll approximately every other month. The exact roll methodology differs between certain commodities. The index will reflect the performance of its underlying commodities, including the impact of rolling, without regard to income earned on cash positions. For more information about the risks associated with rolling futures positions, see “Item 1A. Risk Factors. Potential negative impact from rolling futures positions” in this Annual Report on Form 10-K.

The Dow Jones-UBS is comprised of five different commodity sectors: energy, livestock, industrial metals, precious metals and agriculture. These five sectors track futures contracts prices of 20 specific commodities: natural gas, WTI crude oil, brent crude, unleaded gasoline, heating oil, live cattle, lean hogs, wheat, corn, soybeans, soybean oil, aluminum, copper, zinc, nickel, gold, silver, sugar, cotton and coffee. Beginning in January 2013, the Dow Jones-UBS will add two additional commodities: Hard Red Winter Wheat (KBWT) and soybean meal. The Dow Jones-UBS is designed to minimize concentration in any one commodity or sector. Prior to January 2013, no single commodity could constitute less than 2% or more than 15% of the index. In January 2013, the 2% floor will be eliminated and commodities in the index may have target weights lower than 2%. No related group of commodities (e.g., energy, precious metals, livestock or grains) may constitute more than 33% of the index as of the annual reweighting of the components. The Dow Jones-UBS family of indices also includes 10 sub-indexes that group commodities based on type, as well as single commodity sub-indexes representing each of the commodities that are currently tracked by the Dow Jones-UBS. As discussed below, ProShares Ultra DJ-UBS Crude Oil and ProShares UltraShort DJ-UBS Crude Oil are designed to track one of these sub-indexes, the Dow Jones-UBS Crude Oil Subindex^SM and ProShares Ultra DJ-UBS Natural Gas and ProShares UltraShort DJ-UBS Natural Gas are designed to track another one of these sub-indexes, the Dow Jones-UBS Natural Gas Subindex.

To determine its component weightings, the Dow Jones-UBS relies primarily on liquidity data, or the relative amount of trading activity of a particular commodity. Liquidity is an important indicator of the value placed on a commodity by financial and physical market participants. The index also relies to a lesser extent on dollar-adjusted production data. The index thus relies on data that is endogenous to the futures markets (liquidity) and exogenous to the futures markets (production) in determining relative weightings. All data used in both the liquidity and production calculations is averaged over a five-year period.

In consultation with the DJ-UBS Commodity Index Advisory Committee, the DJ-UBS Commodity Index Supervisory Committee meets annually to determine the composition of the index in accordance with the rules established in the DJ-UBSCI Handbook. The Supervisory Committee consists of employees of UBS Securities LLC and Dow Jones & Company, Inc. (“Dow Jones”). DJ-UBS Commodity Index Advisory Committee members are drawn from the academic, financial and legal communities. The index is re-weighted and rebalanced each year in January on a price-percentage basis. The annual weightings for the index are determined each year in June or July by UBS Securities LLC and Dow Jones under the supervision of the Dow Jones-UBS Commodity Index Oversight Committee, announced after approval by the Committee and implemented the following January.

The Dow Jones-UBS is composed of commodities traded on U.S. exchanges, with the exception of aluminum, nickel and zinc, which trade on the London Metal Exchange. Trading hours for the U.S. commodity exchanges are between 8:00 a.m. and 3:00 p.m. (Eastern Time). The Dow Jones-UBS contract trades exclusively on the Chicago Board of Trade’s (“CBOT”) electronic trading platform. A daily settlement price for the Dow Jones-UBS is published at approximately 5:00 p.m. (Eastern Time).

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The Dow Jones-UBS is designed to provide:

The Dow Jones-UBS is a proprietary index that UBS Securities LLC (successor to AIG Financial Products Corp.) developed and that Dow Jones, in conjunction with UBS Securities LLC, calculates. The methodology for determining the composition and weighting of the index and for calculating its level is subject to modification by the Sponsors any time. Dow Jones disseminates the index level at least every 15 seconds from 8:00 a.m. to 3:00 p.m. (Eastern Time), and publishes a daily index level at approximately 5:00 p.m. (Eastern Time), each business day.

As of October 31, 2012, the most recent available date of such information prior to December 31, 2012, the individual commodity weightings for the Dow Jones-UBS were as follows:

Dow Jones-UBS WTI Crude Oil Subindex^SM

ProShares Ultra DJ-UBS Crude Oil and ProShares UltraShort DJ-UBS Crude Oil are designed to correspond (before fees and expenses) to two times (2x) or two times the inverse (-2x) of the daily performance of the Dow Jones-UBS WTI Crude Oil Subindex^SM, a sub-index of the Dow Jones-UBS. The Dow Jones-UBS WTI Crude Oil Subindex^SM is intended to reflect the performance of crude oil as measured by the price of futures contracts of West Texas Intermediate sweet, light crude oil traded on the NYMEX, including the impact of rolling, without regard to income earned on cash positions. The performance of the crude oil futures market is normally very different than the performance of the physical crude oil market (e.g., the price of crude oil at port). See “Item 1A. Risk Factors-The Commodity Index Funds are linked to an index comprised of commodity futures contracts, and are not linked to the spot prices of the underlying physical commodities. Commodity futures contracts may perform very differently from the spot price of the underlying physical commodities” in this Annual Report on Form 10-K.

The Dow Jones-UBS WTI Crude Oil Subindex^SM is based on the Crude Oil component of the Dow Jones-UBS, which is described above under “Dow Jones-UBS Commodity Index^SM,” and tracks what is known as a rolling futures position. The roll occurs over a period of five Dow Jones-UBS business days in certain months according to a pre-determined schedule, generally beginning on the fifth business day of the month and ending on the ninth business day. Each day, approximately 20% of each rolling futures position that is included in the month’s roll is rolled, increasing from 0% to 20%, 40%, 60%, 80% and finally 100%. The exact roll methodology differs between certain commodities. The Dow Jones-UBS will reflect the performance of its underlying crude oil futures contracts,

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including the impact of rolling, without regard to income earned on cash positions. For more information about the risks associated with rolling futures positions, see “Item 1A. Risk Factors-Potential negative impact from rolling futures positions” in this Annual Report on Form 10-K.

Dow Jones-UBS Natural Gas Subindex^SM

ProShares Ultra DJ-UBS Natural Gas and ProShares UltraShort DJ-UBS Natural Gas are designed to correspond (before fees and expenses) to two times (2x) or two times the inverse (-2x) of the daily performance of the Dow Jones-UBS Natural Gas Subindex^SM, respectively. The Dow Jones-UBS Natural Gas Subindex^SM is intended to reflect the performance of a rolling position in natural gas futures contracts traded on the NYMEX without regard to income earned on cash positions. An investment in natural gas futures contracts may often perform very differently than the price of physical natural gas (e.g., the wellhead or end-user price of natural gas). See “Item 1A. Risk Factors-The Commodity Index Funds are linked to an index comprised of commodity futures contracts, and are not linked to the spot prices of the underlying physical commodities. Commodity futures contracts may perform very differently from the spot price of the underlying physical commodities” in this Annual Report on Form 10-K.

The Dow Jones-UBS Natural Gas Subindex^SM is based on the Natural Gas component of the Dow Jones-UBS, which is described above under “Dow Jones-UBS Commodity Index^SM,” and tracks what is known as a rolling futures position. The roll occurs over a period of five Dow Jones-UBS business days in certain months according to a pre-determined schedule, generally beginning on the fifth business day of the month and ending on the ninth business day. Each day, approximately 20% of each rolling futures position that is included in the month’s roll is rolled, increasing from 0% to 20%, 40%, 60%, 80% and finally 100%. The exact roll methodology differs between certain commodities. The index will reflect the performance of its underlying natural gas contracts, including the impact of rolling, without regard to income earned on cash positions. For more information about the risks associated with rolling futures positions, see “Item 1A. Risk Factors -Potential negative impact from rolling futures positions” in this Annual Report on Form 10-K.

Information About the Index Licensor

The “Dow Jones-UBS Commodity Indexes^SM,” (the “DJ-UBSCI^SM”) are a joint product of Dow Jones Indexes, a licensed trademark of CME Group Index Services LLC (“CME Indexes”) and UBS Securities LLC (“UBS Securities”), and have been licensed for use. “Dow Jones^®,” “DJ,” “Dow Jones Indexes,” “UBS,” “Dow Jones-UBS Commodity Index^SM” (the DJ-UBSCI^SM),“Dow Jones-UBS WTI Crude Oil Subindex^SM,” “Dow Jones-UBS Natural Gas Subindex” and “DJ-UBS^SM” are service marks of Dow Jones Trademark Holdings, LLC and UBS AG (“UBS AG”), as the case may be, and have been licensed to CME Indexes and have been licensed for use for certain purposes by the Trust (“Licensee”).

The Funds are not sponsored, endorsed, sold or promoted by Dow Jones & Company, Inc. (“Dow Jones”) UBS AG, UBS Securities, CME Indexes or any of their subsidiaries or affiliates. None of Dow Jones, UBS AG, UBS Securities, CME Indexes or any of their subsidiaries or affiliates makes any representation or warranty, express or implied, to the owners of or counterparts to the Funds or any member of the public regarding the advisability of investing in securities or commodities generally or in the Funds particularly. The only relationship of Dow Jones, UBS AG, UBS Securities, CME Indexes or any of their subsidiaries or affiliates to the Licensee is the licensing of certain trademarks, trade names and service marks and of the DJ-UBSCI^SM, which are determined, composed and calculated by CME Indexes in conjunction with UBS Securities without regard to the Licensee or the Funds. Dow Jones, UBS Securities and CME Indexes have no obligation to take the needs of the Licensee or the shareholders of the Funds into consideration in determining, composing or calculating the DJ-UBSCI^SM. None of Dow Jones, UBS AG, UBS Securities, CME Indexes or any of their respective subsidiaries or affiliates is responsible for or has participated in the determination of the timing of, prices at, or quantities of the shares of the Funds that have been or are to be issued or in the determination or calculation of the equation by which the Shares of the Funds are converted into cash. None of Dow Jones, UBS AG, UBS Securities, CME Indexes or any of their subsidiaries or affiliates shall have any obligation or liability, including, without limitation, to Fund shareholders, in connection with the administration, marketing or trading of the Funds. Notwithstanding any of the foregoing, UBS AG, UBS Securities, CME Group Inc. and their respective subsidiaries and affiliates may independently issue and/or sponsor financial products unrelated to the Shares currently being issued by the License, but which may be similar to and competitive with the Funds. In addition, UBS AG, UBS Securities, CME Group Inc. and their subsidiaries and affiliates actively trade commodities, commodity indexes and commodity futures (including the DJ-UBSCI^SM), as well as swaps,

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options and derivatives which are linked to the performance of such commodities, commodity indexes and commodity futures (including the DJ-UBSCI^SM and Dow Jones-UBS Commodity Index Total Return^SM) It is possible that this trading activity will affect the value of the DJ-UBSCI^SM, and Fund shares.

This Annual Report on Form 10-K relates only to Funds and does not relate to the exchange-traded physical commodities underlying any of the DJ-UBSCI^SM components. Purchasers of the Shares should not conclude that the inclusion of a futures contract in the DJ-UBSCI^SM is any form of investment recommendation of the futures contract or the underlying exchange-traded physical commodity by Dow Jones, UBS AG, UBS Securities, CME Indexes or any of their subsidiaries or affiliates. The information in this Annual Report on Form 10-K regarding the components of the Dow Jones-UBS has been derived solely from publicly available documents. None of Dow Jones, UBS AG, UBS Securities, CME Indexes or any of their subsidiaries or affiliates has made any due diligence inquiries with respect to the DJ-UBSCI^SM components in connection with Funds. None of Dow Jones, UBS AG, UBS Securities, CME Index or any of their subsidiaries or affiliates makes any representation that these publicly available documents or any other publicly available information regarding the DJ-UBSCI^SM components, including without limitation a description of factors that affect the prices of such components, are accurate or complete.

NONE OF DOW JONES, UBS AG, UBS SECURITIES, CME INDEXES OR ANY OF THEIR SUBSIDIARIES OR AFFILIATES GUARANTEES THE ACCURACY AND/OR THE COMPLETENESS OF THE DJ-UBSCI^SM OR ANY DATA RELATED THERETO AND NONE OF DOW JONES, UBS AG, UBS SECURITIES, CME INDEXES OR ANY OF THEIR SUBSIDIARIES OR AFFILIATES SHALL HAVE ANY LIABILITY FOR ANY ERRORS, OMISSIONS, OR INTERRUPTIONS THEREIN. NONE OF DOW JONES, UBS AG, UBS SECURITIES, CME INDEXES OR ANY OF THEIR SUBSIDIARIES OR AFFILIATES MAKES ANY WARRANTY, EXPRESS OR IMPLIED, AS TO RESULTS TO BE OBTAINED BY THE LICENSEE, FUND SHAREHOLDERS, OR ANY OTHER PERSON OR ENTITY FROM THE USE OF THE DJ-UBSCI^SM OR ANY DATA RELATED THERETO. NONE OF DOW JONES, UBS AG, UBS SECURITIES, CME INDEXES OR ANY OF THEIR SUBSIDIARIES OR AFFILIATES MAKES ANY EXPRESS OR IMPLIED WARRANTIES, AND EXPRESSLY DISCLAIMS ALL WARRANTIES OF MERCHANTABILITY OR FITNESS FOR A PARTICULAR PURPOSE OR USE WITH RESPECT TO THE DJ-UBSCI^SM OR ANY DATA RELATED THERETO. WITHOUT LIMITING ANY OF THE FOREGOING, IN NO EVENT SHALL DOW JONES, UBS AG, UBS SECURITIES, CME INDEXES OR ANY OF THEIR SUBSIDIARIES OR AFFILIATES HAVE ANY LIABILITY FOR ANY LOST PROFITS OR INDIRECT, PUNITIVE, SPECIAL OR CONSEQUENTIAL DAMAGES OR LOSSES, EVEN IF NOTIFIED OF THE POSSIBILITY THEREOF. THERE ARE NO THIRD PARTY BENEFICIARIES OF ANY AGREEMENTS OR ARRANGEMENTS AMONG DOW JONES, UBS SECURITIES, CME INDEXES AND THE LICENSEE, OTHER THAN UBS AG AND THE LICENSORS OF CME INDEXES.

Description of the Commodity Benchmarks

Gold

ProShares Ultra Gold and ProShares UltraShort Gold are designed to correspond (before fees and expenses) to two times (2x) or two times the inverse (-2x), respectively, of the daily performance of gold bullion as measured by the U.S. Dollar p.m. fixing price for delivery in London. The Funds do not directly or physically hold the underlying gold, but instead, seek exposure to gold through the use of Financial Instruments whose value is based on the underlying price of gold to pursue their investment objective. The benchmark price of gold is the U.S. dollar price of gold bullion as measured by the London afternoon fixing price per troy ounce of unallocated gold bullion for delivery in London through a member of the London Bullion Market Association (“LBMA”) authorized to effect such delivery.

The price of gold is volatile with fluctuations expected to affect the value of the Shares of the Fund. The price movement of gold may be influenced by a variety of factors, including announcements from central banks regarding reserve gold holdings, agreements among central banks, political uncertainties and economic concerns. The gold market is a global marketplace consisting of both OTC transactions and exchange-traded products. The OTC market generally consists of transactions in spot, forwards, options and other derivatives, while exchange-traded transactions consist of futures and options.

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A London gold “fix” is conducted each trading day at 3:00 p.m. London time providing a reference gold price for that day’s trading. Many long-term contracts are priced on the basis of the London gold fix and market participants will usually refer to the London gold fix when looking for a basis for valuation. The Sponsor believes that the London fix is the most widely used benchmark for daily gold prices and is quoted by various major market data vendors.

Silver

ProShares Ultra Silver and ProShares UltraShort Silver are designed to correspond (before fees and expenses) to two times (2x) or two times the inverse (-2x), respectively, of the daily performance of silver bullion as measured by the U.S. Dollar fixing price for delivery in London. The Funds do not directly or physically hold the underlying silver, but instead seek exposure to silver through the use of Financial Instruments whose value is based on the underlying price of silver to pursue their investment objective. The benchmark price of silver is the U.S. Dollar price of silver bullion as measured by the London fixing price per troy ounce of unallocated silver bullion for delivery in London through a member of the LBMA authorized to effect such delivery.

The price of silver is volatile with fluctuations expected to affect the value of the Shares. The largest industrial users of silver are the photographic, jewelry, and electronic industries and developments in these industries among other factors may influence the price of silver. Like gold, the silver market is a global marketplace consisting of both OTC transactions and exchange-traded products. The OTC market generally consists of transactions in spot, forwards, options and other derivatives, while exchange-traded transactions consist of futures and options.

A London silver “fix” is conducted each trading day at 12:00 p.m. London time providing a reference silver price for that day’s trading. Many long-term contracts are priced on the basis of the London silver fix and market participants will usually refer to the London silver fix when looking for a basis for valuation. The Sponsor believes that the London fix is the most widely used benchmark for daily silver prices and is quoted by various major market data vendors.

Description of the Currencies Benchmarks

The Currency Funds are designed to correspond (before fees and expenses) to two times (2x), the inverse (-1), two times the inverse (-2x), or three times the inverse (-3x) of the daily performance of the spot price of the applicable currency versus the U.S. dollar. The spot price of each currency is measured by the 4:00 p.m. (Eastern Time) spot prices as provided by Bloomberg, expressed in terms of U.S. dollars per unit of foreign currency. The Currency Funds do not necessarily directly or physically hold the underlying currency or currencies and will instead seek exposure through the use of certain Financial Instruments whose value is based on the price of the underlying currency to pursue its investment objective.

Australian Dollar

ProShares Ultra Australian Dollar and ProShares UltraShort Australian Dollar are designed to correspond (before fees and expenses) to two times (2x) or two times the inverse (-2x) of the daily performance of the Australian dollar spot price versus the U.S. dollar, respectively. These Funds use the 4:00 p.m. (Eastern Time) Australian dollar/U.S. dollar exchange rate as provided by Bloomberg, expressed in terms of U.S. dollars per unit of foreign currency, as the basis for the underlying benchmark.

The Australian dollar is the national currency of Australia and the currency of the accounts of the Reserve Bank of Australia, the Australian central bank. The official currency code for the Australian dollar is “AUD.” The Australian dollar is referred to in Australia as “dollar.” As with U.S. currency, 100 Australian cents are equal to one Australian dollar. In Australia, unlike most other countries, cash transactions are rounded to the nearest five cents. The most commonly used symbol used to represent the Australian dollar is “A$.”

In 1913, the Commonwealth Bank of Australia issued the first Australian currency notes. In 1915, the Commonwealth Bank of Australia became the exclusive issuer of currency in Australia. From 1930 through the 1960s, the Australian banking system underwent substantial transformation. In 1960, the Reserve Bank of Australia was established. In 1966, a new decimalized currency was introduced. At various times throughout the 1900s, the value of Australian currency was based on a fixed quantity of gold; at other times, the Australian dollar was pegged to foreign currencies, including the U.S. dollar. Beginning in 1983, the Australian dollar’s value was allowed to float, with the result that its value now depends almost entirely on market forces. The foregoing information is compiled from the Reserve Bank of Australia’s website (http://www.rba.gov.au).

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Euro

ProShares Ultra Euro, ProShares Short Euro, ProShares UltraShort Euro and ProShares UltraPro Short Euro are designed to correspond (before fees and expenses) to two times (2x), the inverse (-1), two times the inverse (-2x), or three times the inverse (-3x), respectively, of the daily performance of the euro spot price versus the U.S. dollar. These Funds use the 4:00 p.m. (Eastern Time) Euro/U.S. dollar exchange rate as provided by Bloomberg, expressed in terms of U.S. dollars per unit of foreign currency, as the basis for the underlying benchmark.

In 1998, the European Central Bank in Frankfurt was organized by Austria, Belgium, Finland, France, Germany, Ireland, Italy, Luxembourg, the Netherlands, Portugal and Spain in order to establish a common currency-the euro. In 2001, Greece joined as the twelfth country adopting the Euro as its national currency. Unlike the U.S. Federal Reserve System, the Bank of Japan and other comparable central banks, the European Central Bank is a central authority that conducts monetary policy for an economic area consisting of many otherwise largely autonomous states.

At its inception on January 1, 1999, the euro was launched as an electronic currency used by banks, foreign exchange dealers and stock markets. In 2002, the euro became cash currency for approximately 300 million citizens of 12 European countries. Today, 23 countries use the Euro, including Andorra, Cyprus, Finland, Kosovo, Malta, Monaco, Montenegro, San Marino, Slovakia, Slovenia and the Vatican City.

Although the European countries that have adopted the euro are members of the European Union (“EU”), the United Kingdom, Denmark and Sweden are EU members that have not adopted the euro as their national currency.

Japanese Yen

ProShares Ultra Yen and ProShares UltraShort Yen are designed to correspond (before fees and expenses) to two times (2x) or two times the inverse (-2x), respectively, of the daily performance of the Japanese yen spot price versus the U.S. dollar. These Funds use the 4:00 p.m. (Eastern Time) Japanese yen/U.S. dollar exchange rate as provided by Bloomberg, expressed in terms of U.S. dollars per unit of foreign currency, as the basis for the underlying benchmark.

The Japanese Yen has been the official currency of Japan since 1871. The Bank of Japan has been operating as the central bank of Japan since 1882.

Description of the VIX Futures Indexes

The VIX Funds seek to offer exposure to forward equity market volatility by obtaining exposure to the VIX Futures Indexes, which are based on publicly traded VIX futures contracts. The VIX Futures Indexes are intended to reflect the returns that are potentially available through an unleveraged investment in the VIX futures contracts comprising each VIX Futures Index. The VIX, which is not the index underlying the VIX Funds, is calculated based on the prices of put and call options on the S&P 500. The VIX Funds can be expected to perform very differently from the VIX.

The Short-Term VIX Index employs rules for selecting VIX futures contracts comprising the Short-Term VIX Index and a formula to calculate a level for that index from the prices of these VIX futures contracts. Specifically, the VIX futures contracts comprising the Short-Term VIX Index represent the prices of two near-term VIX futures contracts, replicating a position that rolls the nearest month VIX futures to the next month VIX futures on a daily basis in equal fractional amounts. This results in a constant weighted average maturity of one-month. The roll period begins on the Tuesday prior to the monthly CBOE VIX futures settlement and runs through the Tuesday prior to the subsequent month’s CBOE VIX futures settlement date.

The Mid-Term VIX Index also employs rules for selecting its VIX futures contracts comprising the Mid-Term VIX Index and a formula to calculate a level for that index from the prices of these VIX futures contracts. Specifically, the VIX futures contracts comprising the Mid-Term VIX Index represent the prices for four contract months of VIX futures contracts, representing a rolling long position in the fourth, fifth, sixth and seventh month VIX futures contracts. The Mid-Term VIX Index rolls continuously throughout each month while maintaining positions in the fifth and sixth month contracts. This results in a constant weighted average maturity of five months.

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The level of each VIX Futures Index in real time and at the close of trading on each VIX Futures Index business day will be published by Bloomberg L.P. under the following ticker symbols:

The performance of the VIX Futures Indexes is influenced by the S&P 500 (and options thereon) and the VIX. A description of VIX futures contracts, the VIX and the S&P 500 follows:

VIX Futures Contracts

Both VIX Futures Indexes are comprised of VIX futures contracts. VIX futures contracts were first launched for trading by the CBOE in 2004. VIX futures contracts have expirations ranging from the front month consecutively out to the tenth month. VIX futures contracts allow investors the ability to invest based on their view of forward implied market volatility. Investors that believe the forward implied market volatility of the S&P 500, as represented by VIX futures, will increase may buy VIX futures. Conversely, investors that believe that the forward implied market volatility of the S&P 500, as represented by VIX futures, will decline may sell VIX futures. VIX futures are reported by Bloomberg L.P. under the ticker symbol “VX.”

While the VIX represents a measure of the current expected volatility of the S&P 500 over the next 30 days, the prices of VIX futures contracts are based on the current expectation of what the expected 30-day volatility will be at a particular time in the future (on the expiration date). The VIX and VIX futures generally behave quite differently. To illustrate, on November 30, 2012, the VIX was 15.87 and the price of the December 2012 VIX futures contracts expiring on December 18, 2012 was 15.55. In this example, the price of the VIX represented the 30-day implied, or “spot,” volatility (the volatility expected for the period from November 30, 2012 to December 31, 2012) of the S&P 500 and the December VIX futures contracts represented forward implied volatility (the volatility expected for the period from December 18, 2012 to January 18, 2013) of the S&P 500. The spot/forward relationship between the VIX and VIX futures has two noteworthy consequences: (1) the price of a VIX futures contract can be lower, equal to or higher than the VIX, depending on whether the market expects volatility to be lower, equal to or higher in the 30-day forward period covered by the VIX futures contract than in the 30-day spot period covered by the VIX; and (2) an investor cannot create a position equivalent to one in VIX futures contracts by buying the VIX and holding the position to the futures expiration date while financing the transaction.

The VIX

The VIX Funds are not linked to the VIX and can be expected to perform very differently from the VIX. The VIX is an index designed to measure the implied volatility of the S&P 500 over 30 days in the future, and is calculated based on the prices of certain put and call options on the S&P 500. The VIX is reflective of the premium paid by investors for certain options linked to the level of the S&P 500. During periods of rising investor uncertainty, including periods of market instability, the implied level of volatility of the S&P 500 typically increases and, consequently, the prices of options linked to the S&P 500 typically increase (assuming all other relevant factors remain constant or have negligible changes). This, in turn, causes the level of the VIX to increase. The VIX has historically had a negative correlation to the S&P 500. The VIX was developed by the CBOE and is calculated, maintained and published by the CBOE. The CBOE has no obligation to continue to publish, and may discontinue the publication of, the VIX. The VIX is reported by Bloomberg L.P. under the ticker symbol “VIX.” The calculation of the VIX involves a formula that uses the prices of a weighted series of out-of-the-money put and call options on the level of the S&P 500 (“SPX Options”) with two adjacent expiry terms to derive a constant 30-day forward measure of market volatility. The VIX is calculated independent of any particular option pricing model and in doing so seeks to eliminate any biases which may otherwise be included in using options pricing methodology based on certain assumptions. Although the VIX measures the 30-day forward volatility of the S&P 500 as implied by the SPX Options, 30-day options are only available once a month. To arrive at the VIX level, a broad range of out-of-the money SPX Options expiring on the two closest nearby months (“near term options” and “next term

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options,” respectively) are selected in order to bracket a 30-day calendar period. SPX Options having a maturity of less than eight days are excluded at the outset and, when the near term options have eight days or less left to expiration, the VIX rolls to the second and third contract months in order to minimize pricing anomalies that occur close to expiration. The model-free implied volatility using prices of the near term options and next term options are then calculated on a strike price weighted average basis in order to arrive at a single average implied volatility value for each month. The results of each of the two months are then interpolated to arrive at a single value with a constant maturity of 30 days to expiration.

The S&P 500

The S&P 500 is an index that measures large-cap U.S. stock market performance. It is a float-adjusted market capitalization weighted index of 500 U.S. operating companies and real estate investment trusts selected by the S&P U.S. Index Committee through a non-mechanical process that factors in criteria such as liquidity, price, market capitalization and financial viability. Reconstitution occurs both on a quarterly and ongoing basis. As of December 31, 2012, the S&P 500 included companies with capitalizations between $1.6 billion and $500.6 billion. The average capitalization of the companies comprising the Index was approximately $27 billion. S&P publishes the S&P 500. The daily calculation of the current value of the S&P 500 is based on the relative value of the aggregate market value of the common stocks of 500 companies as of a particular time compared to the aggregate average initial market value of the common stocks of 500 similar companies at the time of the inception of the S&P 500. The 500 companies are not the 500 largest publicly traded companies and not all 500 companies are listed on the NYSE. S&P chooses companies for inclusion in the S&P 500 with the objective of achieving a distribution by broad industry groupings that approximates the distribution of these groupings in the common stock population of the U.S. equity market. S&P may from time-to-time, in its sole discretion, add companies to, or delete companies from, the S&P 500 to achieve the objectives stated above. Relevant criteria employed by S&P include the viability of the particular company, the extent to which that company represents the industry group to which it is assigned, the extent to which the company’s common stock is widely held and the market value and trading activity of the common stock of that company.

THE VIX FUNDS ARE NOT SPONSORED, ENDORSED, SOLD OR PROMOTED BY S&P AND ITS AFFILIATES OR CBOE. S&P AND CBOE MAKE NO REPRESENTATION, CONDITION OR WARRANTY, EXPRESS OR IMPLIED, TO THE OWNERS OF THE VIX FUNDS OR ANY MEMBER OF THE PUBLIC REGARDING THE ADVISABILITY OF INVESTING IN SECURITIES GENERALLY OR IN THE VIX FUNDS PARTICULARLY OR THE ABILITY OF THE INDEXES TO TRACK MARKET PERFORMANCE AND/OR OF GROUPS OF ASSETS OR ASSET CLASSES AND/OR TO ACHIEVE ITS STATED OBJECTIVE AND/OR TO FORM THE BASIS OF A SUCCESSFUL INVESTMENT STRATEGY, AS APPLICABLE. S&P’S AND CBOE’S ONLY RELATIONSHIP TO THE TRUST ON BEHALF OF ITS APPLICABLE SERIES AND THE SPONSOR IS THE LICENSING OF CERTAIN TRADEMARKS AND TRADE NAMES AND OF THE VIX FUTURES INDEXES WHICH ARE DETERMINED, COMPOSED AND CALCULATED BY S&P WITHOUT REGARD TO THE TRUST ON BEHALF OF ITS APPLICABLE SERIES AND THE SPONSOR OR THE VIX FUNDS. S&P HAS NO OBLIGATION TO TAKE THE NEEDS OF THE TRUST ON BEHALF OF ITS APPLICABLE SERIES AND THE SPONSOR OR THE OWNERS OF THE VIX FUNDS INTO CONSIDERATION IN DETERMINING, COMPOSING OR CALCULATING THE VIX FUTURES INDEXES. S&P AND CBOE ARE NOT ADVISORS TO THE VIX FUNDS AND ARE NOT RESPONSIBLE FOR AND HAVE NOT PARTICIPATED IN THE DETERMINATION OF THE PRICES AND AMOUNT OF THE VIX FUNDS OR THE TIMING OF THE ISSUANCE OR SALE OF THE VIX FUNDS OR IN THE DETERMINATION OR CALCULATION OF THE EQUATION BY WHICH THE VIX FUND SHARES ARE TO BE CONVERTED INTO CASH. S&P AND CBOE HAVE NO OBLIGATION OR LIABILITY IN CONNECTION WITH THE ADMINISTRATION, MARKETING, OR TRADING OF THE VIX FUNDS.

NEITHER S&P, ITS AFFILIATES NOR THIRD PARTY LICENSORS, INCLUDING CBOE, GUARANTEES THE ACCURACY AND/OR THE COMPLETENESS OF THE VIX FUTURES INDEXES OR ANY DATA INCLUDED THEREIN AND S&P, ITS AFFILIATES AND THEIR THIRD PARTY LICENSORS, INCLUDING CBOE, SHALL HAVE NO LIABILITY FOR ANY ERRORS, OMISSIONS, OR INTERRUPTIONS THEREIN. S&P AND CBOE MAKE NO WARRANTY, CONDITION OR REPRESENTATION, EXPRESS OR IMPLIED, AS TO RESULTS TO BE OBTAINED BY THE TRUST ON BEHALF OF ITS APPLICABLE SERIES AND THE SPONSOR, OWNERS OF THE VIX FUNDS, OR ANY OTHER PERSON OR ENTITY FROM THE USE OF

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THE VIX FUTURES INDEXES OR ANY DATA INCLUDED THEREIN. S&P AND CBOE MAKE NO EXPRESS OR IMPLIED WARRANTIES, REPRESENTATIONS OR CONDITIONS, AND EXPRESSLY DISCLAIM ALL WARRANTIES OR CONDITIONS OF MERCHANTABILITY OR FITNESS FOR A PARTICULAR PURPOSE OR USE AND ANY OTHER EXPRESS OR IMPLIED WARRANTY OR CONDITION WITH RESPECT TO THE VIX FUTURES INDEXES OR ANY DATA INCLUDED THEREIN. WITHOUT LIMITING ANY OF THE FOREGOING, IN NO EVENT SHALL S&P, ITS AFFILIATES OR THEIR THIRD PARTY LICENSORS, INCLUDING CBOE, HAVE ANY LIABILITY FOR ANY SPECIAL, PUNITIVE, INDIRECT, OR CONSEQUENTIAL DAMAGES (INCLUDING LOST PROFITS) RESULTING FROM THE USE OF THE VIX FUTURES INDEXES OR ANY DATA INCLUDED THEREIN, EVEN IF NOTIFIED OF THE POSSIBILITY OF SUCH DAMAGES.

Description of the S&P Dynamic Futures Index and its Sub-Index

Developed by S&P, the DFI and the DCFI are long/short rules-based investable indexes designed to attempt to capture the economic benefit derived from both rising and declining trends in futures prices. The DFI is composed of the Index Components, representing unleveraged long or short positions in futures contracts in the commodity and financial markets. These Index Components are then formed into groups of one or more contracts with similar characteristics known as “sectors.” Index Components within each sector are chosen based on fundamental characteristics and liquidity. The Commodities Futures Contracts comprise the DCFI.

The weight assigned to each Index Component is set on an annual basis. Commodity Futures Contracts weights are based on generally known world production levels as determined by the S&P GSCI Light Energy Index. Weightings of the Financial Futures Contracts are based on, but not directly proportional to, gross domestic product. The Index Components are rebalanced to these weights each month concurrently with the roll and repositioning, as further described herein.

The positions the DFI (and accordingly, the DCFI) takes in the Index Components are not long-only, but are set, long or short based on the relation of the current price input of the Index Component with a seven-month weighted moving average of the price input of the same Index Component.

The following charts reflect the initial 2012 weighting schemes for the DFI and DCFI (each rounded to the nearest one-hundredth). The initial DFI weights (to which the DFI rebalances each month) will be as follows:

DFI Weights*

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For the DCFI, the initial index weightings (to which the DCFI rebalances each month) are as follows:

DCFI Weights*

Determining the Long/Short Positioning of the Sectors

Each month, the DFI and the DCFI will take long or short positions in each Index Component relative to a seven-month exponential weighted moving average price change. Long positions are tracked when an Index Component’s current one-month price change is greater than or equal to the exponential average of the past seven monthly price inputs. Short positions are tracked when an Index Component’s current one-month price change is less than the exponential average of the past seven monthly price inputs. The price inputs represent the monthly percentage change of an Index Component’s price. Monthly positions are determined on the second to last DFI business day of the month (defined as the position determination date, or PDD) when the monthly percentage change of an Index Component’s price is compared to past monthly price changes, exponentially weighted to give greatest weight to the most recent return and least weight to the return seven months prior. The weighted sum of the percentage changes of all the Index Component prices equals the daily movement of the DFI. To create an exponential average for comparison, price inputs (percentage change from current and previous PDDs) are weighted per the schedule below. Due to this weighting methodology, current price movements are more important than those of the more distant past.

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Rolling

During this monthly rebalancing, each of the DFI and DCFI will also “roll” certain of its positions from the current contract to a contract further from settlement. In order to maintain consistent exposure to the Index Components that compose the index, each Index Component contract must be sold prior to its expiration date and replaced by a contract maturing at a specified date in the future. This process is known as rolling. Index Component contracts are rolled periodically. The rolls are implemented pursuant to a roll schedule over a five-day period from the first (1^st) through the fifth (5^th) DFI business days of the month. A DFI business day is any day on which the majority of the Index Components are open for official trading and official settlement prices are provided, excluding holidays and weekends.

THE FUNDS ARE NOT SPONSORED, ENDORSED, SOLD OR PROMOTED BY S&P AND ITS AFFILIATES OR CBOE. S&P AND CBOE MAKE NO REPRESENTATION, CONDITION OR WARRANTY, EXPRESS OR IMPLIED, TO THE OWNERS OF THE FUNDS OR ANY MEMBER OF THE PUBLIC REGARDING THE ADVISABILITY OF INVESTING IN SECURITIES GENERALLY OR IN THE FUNDS PARTICULARLY OR THE ABILITY OF THE INDEXES TO TRACK MARKET PERFORMANCE OF CERTAIN FINANCIAL MARKETS AND/OR SECTIONS THEREOF AND/OR OF GROUPS OF ASSETS OR ASSET CLASSES AND/OR TO ACHIEVE ITS STATED OBJECTIVE AND/OR TO FORM THE BASIS OF A SUCCESFUL INVESTMENT STRATEGY, AS APPLICABLE. S&P’S AND CBOE’S ONLY RELATIONSHIP TO THE TRUST ON BEHALF OF ITS APPLICABLE SERIES AND THE SPONSOR IS THE LICENSING OF CERTAIN TRADEMARKS AND TRADE NAMES AND OF THE INDEXES WHICH ARE DETERMINED, COMPOSED AND CALCULATED BY S&P WITHOUT REGARD TO THE TRUST ON BEHALF OF ITS APPLICABLE SERIES AND THE SPONSOR OR THE FUNDS. S&P HAS NO OBLIGATION TO TAKE THE NEEDS OF THE TRUST ON BEHALF OF ITS APPLICABLE SERIES AND THE SPONSOR OR THE OWNERS OF THE FUNDS INTO CONSIDERATION IN DETERMINING, COMPOSING OR CALCULATING THE INDEXES. S&P AND CBOE ARE NOT ADVISORS TO THE FUNDS AND ARE NOT RESPONSIBLE FOR AND HAVE NOT PARTICIPATED IN THE DETERMINATION OF THE PRICES AND AMOUNT OF THE FUNDS OR THE TIMING OF THE ISSUANCE OR SALE OF THE FUNDS OR IN THE DETERMINATION OR CALCULATION OF THE EQUATION BY WHICH THE FUND SHARES ARE TO BE CONVERTED INTO CASH. S&P AND CBOE HAVE NO OBLIGATION OR LIABILITY IN CONNECTION WITH THE ADMINISTRATION, MARKETING, OR TRADING OF THE FUNDS.

NEITHER S&P, ITS AFFILIATES NOR THIRD PARTY LICENSORS, INCLUDING CBOE, GUARANTEES THE ACCURACY AND/OR THE COMPLETENESS OF THE INDEXES OR ANY DATA INCLUDED THEREIN AND S&P, ITS AFFILIATES AND THEIR THIRD PARTY LICENSORS, INCLUDING CBOE, SHALL HAVE NO LIABILITY FOR ANY ERRORS, OMISSIONS, OR INTERRUPTIONS THEREIN. S&P AND CBOE MAKE NO WARRANTY, CONDITION OR REPRESENTATION, EXPRESS OR IMPLIED, AS TO RESULTS TO BE OBTAINED BY THE TRUST ON BEHALF OF ITS APPLICABLE SERIES AND THE SPONSOR, OWNERS OF THE FUND, OR ANY OTHER PERSON OR ENTITY FROM THE USE OF THE INDEXES OR ANY DATA INCLUDED THEREIN. S&P AND CBOE MAKE NO EXPRESS OR IMPLIED WARRANTIES, REPRESENTATIONS OR CONDITIONS, AND EXPRESSLY DISCLAIM ALL WARRANTIES OR CONDITIONS OF MERCHANTABILITY OR FITNESS FOR A PARTICULAR PURPOSE OR USE AND ANY OTHER EXPRESS OR IMPLIED WARRANTY OR CONDITION WITH RESPECT TO

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THE INDEXES OR ANY DATA INCLUDED THEREIN. WITHOUT LIMITING ANY OF THE FOREGOING, IN NO EVENT SHALL S&P, ITS AFFILIATES OR THEIR THIRD PARTY LICENSORS, INCLUDING CBOE, HAVE ANY LIABILITY FOR ANY SPECIAL, PUNITIVE, INDIRECT, OR CONSEQUENTIAL DAMAGES (INCLUDING LOST PROFITS) RESULTING FROM THE USE OF THE INDEXES OR ANY DATA INCLUDED THEREIN, EVEN IF NOTIFIED OF THE POSSIBILITY OF SUCH DAMAGES.

Creation and Redemption of Shares

Each Fund creates and redeems, or will create and redeem, Shares from time to time, but only in one or more Creation Units. A Creation Unit is or will be a block of 50,000 Shares of a Geared Fund or a Managed Futures Fund, or a block of 25,000 Shares of a Matching VIX Fund. Creation Units may be created or redeemed only by Authorized Participants. Except when aggregated in Creation Units, the Shares are not redeemable securities.

The manner by which Creation Units are purchased and redeemed is dictated by the terms of the Authorized Participant Agreement and Authorized Participant Handbook. By placing a purchase order, an Authorized Participant agrees to deposit cash with the Custodian of the Funds. If permitted by the Sponsor in its sole discretion with respect to a Fund, an Authorized Participant also agrees to enter into or arrange for an exchange of futures for related position or block trade with the relevant Fund whereby the Authorized Participant would also transfer to such Fund a number and type of exchange-traded futures contracts at or near the closing settlement price for such contracts on the purchase order date. Similarly, the Sponsor in its sole discretion may agree with an Authorized Participant to use an exchange of futures for related position to effect an order to redeem Creation Units.

An exchange of futures for related position is a technique permitted by the rules of the applicable futures exchange that, as utilized by a Fund in the Sponsor’s discretion, would allow such Fund to take a position in a futures contract from an Authorized Participant, or give futures contracts to an Authorized Participant, in the case of a redemption, rather than to enter the futures exchange markets to obtain such a position. An exchange of futures for related position by itself will not change either party’s net risk position materially. Because the futures position that a Fund would otherwise need to take in order to meet its investment objective can be obtained without unnecessarily impacting the financial or futures markets or their pricing, exchanges of futures for related positions can generally be viewed as transactions beneficial to a Fund. A block trade is a technique that permits certain Funds to obtain a futures position without going through the market auction system and can generally be viewed as a transaction beneficial to the Fund.

Authorized Participants may pay a fixed transaction fee of up to $500 in connection with each order to create or redeem a Creation Unit in order to compensate Brown Brothers Harriman & Co. (“BBH&Co.”), as the Administrator, the Custodian and the Transfer Agent of each Fund and its Shares, for services in processing the creation and redemption of Creation Units and to offset the costs of increasing or decreasing derivative positions. Authorized Participants also may pay a variable transaction fee to the Fund of up to 0.10% of the value of the Creation Unit that is purchased or redeemed unless the transaction fee is waived or otherwise adjusted by the Sponsor. The Sponsor provides such Authorized Participant with prompt notice in advance of any such waiver or adjustment of the transaction fee. Authorized Participants may sell the Shares included in the Creation Units they purchase from the Funds to other investors in the secondary market.

The form of Authorized Participant Agreement and the related Authorized Participant Handbook set forth the procedures for the creation and redemption of Creation Units and for the payment of cash required for such creations and redemptions. The Sponsor may delegate its duties and obligations under the form of Authorized Participant Agreement to SEI Investments Distribution Co. (“SEI”) or BBH&Co., in its capacity as the Administrator, without consent from any shareholder or Authorized Participant. The form of Authorized Participant Agreement and the related procedures attached thereto may be amended by the Sponsor without the consent of any shareholder or Authorized Participant. Authorized Participants who purchase Creation Units from a Fund receive no fees, commissions or other form of compensation or inducement of any kind from either the Sponsor or the Fund, and no such person has any obligation or responsibility to the Sponsor or the Fund to affect any sale or resale of Shares.

Authorized Participants are cautioned that some of their activities may result in their being deemed participants in a distribution in a manner which would render them statutory underwriters and subject them to the prospectus delivery and liability provisions of the Securities Act of 1933, as amended (the “1933 Act”).

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Each Authorized Participant must be registered as a broker-dealer under the 1934 Act and regulated by Financial Industry Regulatory Authority (“FINRA”), or exempt from being, or otherwise not required to be, so regulated or registered, and must be qualified to act as a broker or dealer in the states or other jurisdictions where the nature of its business so requires. Certain Authorized Participants may be regulated under federal and state banking laws and regulations. Each Authorized Participant must have its own set of rules and procedures, internal controls and information barriers as it determines is appropriate in light of its own regulatory regime.

Authorized Participants may act for their own accounts or as agents for broker-dealers, custodians and other securities market participants that wish to create or redeem Creation Units.

Persons interested in purchasing Creation Units should contact the Sponsor or the Administrator to obtain the contact information for the Authorized Participants. Shareholders who are not Authorized Participants are only able to redeem their Shares through an Authorized Participant.

Pursuant to the Authorized Participant Agreement, the Sponsor agreed to indemnify the Authorized Participants against certain liabilities, including liabilities under the 1933 Act, and to contribute to the payments the Authorized Participants may be required to make in respect of those liabilities.

The following description of the procedures for the creation and redemption of Creation Units is only a summary and an investor should refer to the relevant provisions of the Amended and Restated Trust Agreement of the Trust, as may be further amended from time to time (the “Trust Agreement”) and the form of Authorized Participant Agreement for more detail. The Trust Agreement and the form of Authorized Participant Agreement are incorporated by reference into this Annual Report on Form 10-K.

Creation Procedures

On any Business Day, an Authorized Participant may place an order with the Distributor to create one or more Creation Units. For purposes of processing both purchase and redemption orders, a “Business Day” means any day on which the NAV of such Fund is determined. Purchase orders must be placed by the cut-off time shown below or earlier if the NYSE, a Fund’s primary listing exchange, or other exchange material to the valuation or operation of such Fund (any Exchange) closes before the cut-off time. If a purchase order is received prior to the applicable cut-off time, the day on which SEI receives a valid purchase order is the purchase order date. If the purchase order is received after the applicable cut-off time, the purchase order date will be the next day. Purchase orders are irrevocable. By placing a purchase order, and prior to delivery of such Creation Units, an Authorized Participant’s DTC account will be charged the non-refundable transaction fee due for the purchase order.

Determination of Required Payment

The total payment required to create each Creation Unit is or will be the NAV of 50,000 Shares of the applicable Geared Fund and Managed Futures Fund, or 25,000 Shares of the applicable Matching VIX Fund on the purchase order date plus the applicable transaction fee. For each Fund, Authorized Participants have create/redeem cut-off times prior to the NAV calculation time, which may be different from the close of the U.S. markets, as shown in the table below.

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Delivery of Cash

Cash required for settlement will typically be transferred to the Custodian through: (1) the Continuous Net Settlement (“CNS”) clearing process of the National Securities Clearing Corporation (“NSCC”), as such processes have been enhanced to effect creations and redemptions of Creation Units; or (2) the facilities of DTC on a Delivery Versus Payment (“DVP”) basis, which is the procedure in which the buyer’s payment for securities is due at the time of delivery. Security delivery and payment are simultaneous. If the Custodian does not receive the cash by the market close on the first Business Day following the purchase order date (T+1), such order may be charged interest for delayed settlement or cancelled. The Sponsor reserves the right to extend the deadline for the Custodian to receive the cash required for settlement up to the third Business Day following the purchase order date (T+3). In the event a purchase order is cancelled, the Authorized Participant will be responsible for reimbursing the Fund for all costs associated with cancelling the order including costs for repositioning the portfolio. At its sole discretion, the Sponsor may agree to a delivery date other than T+3. Additional fees may apply for special settlement. The Creation Unit will be delivered to the Authorized Participant upon the Custodian’s receipt of the purchase amount.

Delivery of Exchange of Futures Contract for Related Position (“EFCRP”) Futures Contracts or Block Trades

In the event that the Sponsor shall have determined to permit the Authorized Participant to transfer futures contracts pursuant to an EFCRP or to engage in a block trade purchase of futures contracts from the Authorized Participant with respect to a Fund, as well as to deliver cash, in the creation process, futures contracts required for settlement must be transferred directly to the Fund’s account at its FCM. If the cash is not received by the market close on the third Business Day following the purchase order date (T+3); such order may be charged interest for delayed settlements or cancelled. In the event a purchase order is cancelled, the Authorized Participant will be responsible for reimbursing a Fund for all costs associated with cancelling the order including costs for repositioning the portfolio. At its sole discretion, the Sponsor may agree to a delivery date other than T+3. The Creation Unit will be delivered to the Authorized Participant upon the Custodian’s receipt of the cash purchase amount and the futures contracts.

Suspension or Rejection of Purchase Orders

In respect of any Fund, the Sponsor may, in its discretion, suspend the right to repurchase, or postpone the purchase settlement date, (1) for any period during which any of the NYSE, NYSE Arca, CBOE, CFE, CME (including CBOT and NYMEX) or ICE or other exchange material to the valuation or operation of the Funds (each, an “Exchange”) is closed or when trading is suspended or restricted on such Exchanges in any of the underlying commodities; (2) for any period during which an emergency exists as a result of which the fulfillment of a purchase order is not reasonably practicable; or (3) for such other period as the Sponsor determines to be necessary for the protection of the shareholders. The Sponsor will not be liable to any person or in any way for any loss or damages that may result from any such suspension or postponement.

The Sponsor also may reject a purchase order if:

None of the Sponsor, the Administrator or the Custodian will be liable for the suspension or rejection of any purchase order.

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Redemption Procedures

The procedures by which an Authorized Participant can redeem one or more Creation Units mirror the procedures for the creation of Creation Units. On any Business Day, an Authorized Participant may place an order with the Distributor to redeem one or more Creation Units. If a redemption order is received prior to the applicable cut-off time, or earlier if any Exchange closes before the cut-off time, the day on which SEI receives a valid redemption order is the redemption order date. If the redemption order is received after the applicable cut-off time, the redemption order date will be the next day. Redemption orders are irrevocable. The redemption procedures allow Authorized Participants to redeem Creation Units. Individual shareholders may not redeem directly from a Fund.

By placing a redemption order, an Authorized Participant agrees to deliver the Creation Units to be redeemed through DTC’s book-entry system to the applicable Fund not later than noon (Eastern Time), on the first Business Day immediately following the redemption order date (T+1). The Sponsor reserves the right to extend the deadline for the Fund to receive the Creation Units required for settlement up to the third Business Day following the redemption order date (T+3). By placing a redemption order, and prior to receipt of the redemption proceeds, an Authorized Participant must wire to the Custodian the non-refundable transaction fee due for the redemption order or any proceeds due will be reduced by the amount of the fee payable. At its sole discretion, the Sponsor may agree to a delivery date other than T+3. Additional fees may apply for special settlement.

Upon request of an Authorized Participant made at the time of a redemption order, the Sponsor at its sole discretion may determine, in addition to delivering redemption proceeds, to transfer futures contracts to the Authorized Participant pursuant to an EFCRP or to a block trade sale of futures contracts to the Authorized Participant.

Determination of Redemption Proceeds

The redemption proceeds from a Fund consist of the cash redemption amount and, if permitted by the Sponsor in its sole discretion with respect to a Fund, an exchange of futures for related position or block trade with the relevant Fund. The cash redemption amount is equal to the NAV of the number of Creation Unit(s) of such Fund requested in the Authorized Participant’s redemption order as of the time of the calculation of such Fund’s NAV on the redemption order date, less transaction fees and any amounts attributable to any applicable exchange of futures for related position or block trade.

Delivery of Redemption Proceeds

The redemption proceeds due from a Fund are delivered to the Authorized Participant at noon (Eastern Time), on the third Business Day immediately following the redemption order date if, by such time on such Business Day immediately following the redemption order date, a Fund’s DTC account has been credited with the Creation Units to be redeemed. The Fund should be credited through: (1) the CNS clearing process of NSCC, as such processes have been enhanced to effect creations and redemptions of Creation Units; or (2) the facilities of DTC on a Delivery Versus Payment basis. If a Fund’s DTC account has not been credited with all of the Creation Units to be redeemed by such time, the redemption distribution is delivered to the extent whole Creation Units are received. Any remainder of the redemption distribution is delivered on the next Business Day to the extent any remaining whole Creation Units are received if: (1) the Sponsor receives the fee applicable to the extension of the redemption distribution date which the Sponsor may, from time to time determine and; (2) the remaining Creation Units to be redeemed are credited to the Fund’s DTC account by noon (Eastern Time), on such next Business Day. Any further outstanding amount of the redemption order may be cancelled. The Authorized Participant will be responsible for reimbursing a Fund for all costs associated with cancelling the order including costs for repositioning the portfolio.

The Sponsor is also authorized to deliver the redemption distribution notwithstanding that the Creation Units to be redeemed are not credited to a Fund’s DTC account by noon (Eastern Time), on the third Business Day immediately following the redemption order date if the Authorized Participant has collateralized its obligation to deliver the Creation Units through DTC’s book-entry system on such terms as the Sponsor may determine from time-to-time.

In the event that the Authorized Participant shall have requested, and the Sponsor shall have determined to permit the Authorized Participant to receive futures contracts pursuant to an EFCRP, as well as the cash redemption proceeds, in the redemption process, futures contracts required for settlement shall be transferred directly from the Fund’s account at its FCM to the account of the Authorized Participant at its FCM.

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Suspension or Rejection of Redemption Orders

In respect of any Fund, the Sponsor may, in its discretion, suspend the right of redemption, or postpone the redemption settlement date, (1) for any period during which any Exchange is closed or when trading is suspended or restricted on such Exchanges in any of the underlying commodities; (2) for any period during which an emergency exists as a result of which the redemption distribution is not reasonably practicable; or (3) for such other period as the Sponsor determines to be necessary for the protection of the shareholders. The Sponsor will not be liable to any person or in any way for any loss or damages that may result from any such suspension or postponement.

The Sponsor will reject a redemption order if the order is not in proper form as described in the form of Authorized Participant Agreement or if the fulfillment of the order might be unlawful.

Creation and Redemption Transaction Fee

To compensate BBH&Co. for services in processing the creation and redemption of Creation Units and to offset some or all of the transaction costs, an Authorized Participant may be required to pay a fixed transaction fee to BBH&Co. of up to $500 per order to create or redeem Creation Units and may pay a variable transaction fee to a Fund of up to 0.10% of the value of a Creation Unit. An order may include multiple Creation Units. The transaction fee(s) may be reduced, increased or otherwise changed by the Sponsor at its sole discretion.

Special Settlement

The Sponsor may allow for early settlement of purchase or redemption orders. Such arrangements may result in additional charges to the Authorized Participant.

NAV

The NAV in respect of a Fund, means the total assets of the Fund including, but not limited to, all cash and cash equivalents or other debt securities less total liabilities of such Fund, each determined on the basis of generally accepted accounting principles in the United States, consistently applied under the accrual method of accounting. In particular, the NAV includes any unrealized profit or loss on open Financial Instruments, and any other credit or debit accruing to a Fund but unpaid or not received by a Fund. The NAV per Share of each Fund is computed by dividing the value of the net assets of such Fund (i.e., the value of its total assets less total liabilities) by its total number of Shares outstanding. Expenses and fees are accrued daily and taken into account for purposes of determining the NAV. Each Fund’s NAV is calculated on each day other than a day when one (or more) of such Fund’s Exchanges is closed for regular trading. The Funds compute their NAVs at the times set forth below or an earlier time as set forth on www.ProShares.com if necessitated by an Exchange closing early.

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In calculating the NAV of a Fund, the settlement value of the Fund’s non-exchange traded Financial Instruments, is or will be determined by applying the then-current disseminated value for the applicable benchmark to the terms of such Fund’s non-exchange traded Financial Instruments. However, in the event that an underlying commodity, reference asset or Index Component, as applicable, is not trading due to the operation of daily limits or otherwise, the Sponsor may, in its sole discretion, choose to fair value the index level in order to value the Fund’s non-exchange traded Financial Instruments for purposes of the NAV calculation. Futures contracts traded on a U.S. exchange are calculated at their then-current market value, which is based upon the settlement price (for the Commodity Index Funds, the VIX Funds and the Managed Futures Funds) or the last traded price before the NAV time (for the Commodity Funds and the Currency Funds), for that particular futures contract traded on the applicable U.S. exchange on the date with respect to which the NAV is being determined. If a futures contract traded on a U.S. exchange could not be liquidated on such day, due to operation of daily limits or other rules of the exchange upon which that position is traded or otherwise, the Sponsor may, in its sole discretion, choose to determine a fair value price as the basis for determining the market value of such position for such day. Such fair value prices would generally be determined based on available inputs about the current value of the underlying reference assets and would be based on principles that the Sponsor deems fair and equitable so long as such principles are consistent with normal industry standards.

The current market value of all open futures contracts traded on a non-U.S. exchange, to the extent applicable, are based upon the settlement price for that particular futures contract traded on the applicable non-U.S. exchange on the date with respect to which NAV is being determined; provided further, that if a futures contract traded on a non-U.S. exchange, to the extent applicable, could not be liquidated on such day, due to the operation of daily limits (if applicable) or other rules of the exchange upon which that position is traded or otherwise, the Sponsor may in its sole discretion choose to determine a fair value price as the basis for determining the market value of such position for such day. The Sponsor may in its sole discretion (and under extraordinary circumstances, including, but not limited to, periods during which a settlement price of a futures contract is not available due to exchange limit orders or force majeure type events such as systems failure, natural or manmade disaster, act of God, armed conflict, act of terrorism, riot or labor disruption or any similar intervening circumstance) value any asset of a Fund pursuant to such other principles as the Sponsor deems fair and equitable so long as such principles are consistent with normal industry standards. The amount of any distribution will be a liability of such Fund from the day when the distribution is declared until it is paid.

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The Funds may use a variety of money market instruments to invest excess cash. Short-term bonds used in this capacity and expected to be held-to-maturity will be priced for net asset value purposes at amortized cost.

Indicative Optimized Portfolio Value (“IOPV”)

The IOPV is an indicator of the value of a Fund’s net assets at the time the IOPV is disseminated. The IOPV is calculated and disseminated every 15 seconds throughout the trading day. The IOPV is generally calculated using the prior day’s closing net assets of a Fund as a base and updating throughout the trading day changes in the value of the Financial Instruments held by a Fund. The IOPV should not be viewed as an actual real time update of the NAV because NAV is calculated only once at the end of each trading day. The IOPV also should not be viewed as a precise value of the Shares. The IOPV for Funds based on the Dow Jones-UBS WTI Crude Oil Subindex^SM and the DJ-UBS Natural Gas Index^SM will not update following the determination of the 2:30 p.m. settlement price of the futures contracts underlying those indexes. The IOPVs for Funds based on the DJ-UBS Commodity Index^SM will receive progressively more limited updates during a trading day as the settlement price for each individual component is determined, and such IOPVs will not update after all of the underlying components have determined settlement prices. For the Managed Futures Funds, the IOPVs will be updated during the BATS Exchange Core Trading Session when applicable futures exchanges are trading futures contracts held by the Funds. As the final settlement price for each Index Component is determined, each specific Index Component’s price will remain fixed and the IOPV will reflect such settlement prices. The IOPV will cease updating after all Index Component settlement prices for the current day have been determined.

The applicable Exchange disseminates the IOPV. In addition, the IOPV is published on the NYSE Arca’s website and is available through on-line information services such as Bloomberg and Reuters.

Dissemination of the IOPV provides additional information that is not otherwise available to the public and may be useful to investors and market professionals in connection with the trading of Shares. Investors and market professionals are able throughout the trading day to compare the market price of a Fund and the IOPV. If the market price of Shares diverges significantly from the IOPV, market professionals may have an incentive to execute arbitrage trades. Such arbitrage trades can tighten the tracking between the market price of a Fund and the IOPV and thus can be beneficial to all market participants.

Purchases and Sales in the Secondary Market on the NYSE Arca or the BATS Exchange

The Shares of each Fund are or will be listed on the NYSE Arca or the BATS Exchange. Eight of the Funds, ProShares Ultra DJ-UBS Commodity, ProShares UltraShort DJ-UBS Commodity, ProShares Ultra DJ-UBS Crude Oil, ProShares UltraShort DJ-UBS Crude Oil, ProShares Ultra Euro, ProShares UltraShort Euro, ProShares Ultra Yen and ProShares UltraShort Yen, began trading on the NYSE Arca on November 25, 2008. Four of the Funds, ProShares Ultra Silver, ProShares UltraShort Silver, ProShares Ultra Gold and ProShares UltraShort Gold, began trading on the NYSE Arca on December 3, 2008. Two of the VIX Funds, ProShares VIX Short-Term Futures ETF and ProShares VIX Mid-Term Futures ETF, began trading on the NYSE Arca on January 3, 2011. Two of the VIX Funds, ProShares Ultra VIX Short-Term Futures ETF and ProShares Short VIX Short-Term Futures ETF, began trading on the NYSE Arca on October 3, 2011. Two of the Funds, ProShares Ultra DJ-UBS Natural Gas and ProShares UltraShort DJ-UBS Natural Gas, began trading on the NYSE Arca on October 4, 2011. One of the Funds, ProShares Short Euro, commenced trading on the NYSE Arca on June 26, 2012. Two of the Funds, ProShares Ultra Australian Dollar and ProShares UltraShort Australian Dollar, commenced trading on the NYSE Arca on July 17, 2012. As of December 31, 2012, the New Funds had not commenced investment operations or trading. The Shares of each Fund that has commenced investment operations are listed on the NYSE Arca under the following symbols:

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It is anticipated that applications will be made with the NYSE Arca or the BATS Exchange to list the Shares of each New Fund.

Secondary market purchases and sales of Shares are subject to ordinary brokerage commissions and charges. The Shares of each Fund trade and the Shares of each New Fund are anticipated to trade on either the NYSE Arca or the BATS Exchange, like any other exchange-listed security.

Fees and Expenses

Organization and Offering Expenses

The Trust has paid or will pay expenses incurred in connection with organizing each Fund and the initial offering of each Fund’s Shares, and the Sponsor did not or will not charge its fee in the first year of operations of each Fund in an amount equal to the organization and offering costs. The Sponsor reimbursed or will reimburse each Leveraged Fund, the Short Euro Fund and each Geared VIX Fund to the extent that its organizational and offering costs exceeded 0.95% of its average daily NAV for the first year of operations. The Sponsor reimbursed each Matching VIX Fund to the extent that its organizational and offering costs exceeded 0.85% of its average daily NAV for the first year of operations. The Sponsor will reimburse each Managed Futures Fund to the extent that its organizational and offering costs exceeded 0.75% of its average daily NAV for the first year of operations.

The Sponsor will not collect any fee in the first year of operations of each New Fund in an amount equal to the offering fees. Normal and expected expenses incurred in connection with the continuous offering of Shares of each Fund are paid by the Sponsor.

Organization and offering expenses mean those expenses incurred in connection with the Trust’s formation, the qualification and registration of the Shares of each Fund and in offering, distributing and processing the Shares of each Fund under applicable federal law, and any other expenses actually incurred and, directly or indirectly, related to the organization of each offering of the Shares of such Fund, including, but not limited to, expenses such as:

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Management Fee

Each Geared Fund pays or will pay the Sponsor a Management Fee, monthly in arrears, in an amount equal to 0.95% per annum of its average daily NAV of such Fund. Each Matching VIX Fund pays the Sponsor a management fee, monthly in arrears, in an amount equal to 0.85% per annum of its average daily NAV. Each Managed Futures Fund will pay the Sponsor a Management Fee monthly in arrears, in an amount equal to 0.75% per annum of its average daily NAV. No other management fee is paid by the Funds. The Management Fee is paid in consideration of the Sponsor’s trading advisory services and the other services provided to the Funds that the Sponsor pays directly.

Licensing Fee

The Sponsor pays Dow Jones-UBS a licensing fee for the Dow Jones—UBS Commodity Index ^SM as well as for each sub-index that serves as a benchmark for a Commodity Index Fund. The Sponsor pays or will pay S&P a licensing fee for use of the VIX Futures Indexes as indexes for the VIX Funds. The Sponsor will pay S&P a licensing fee for use of the DFI and DCFI as benchmarks for the Managed Futures Funds.

Routine Operational, Administrative and Other Ordinary Expenses

The Sponsor pays or will pay all of the routine operational, administrative and other ordinary expenses of each Fund, generally, as determined by the Sponsor, including, but not limited to, fees and expenses of the Administrator, Custodian, Distributor, ProFunds Distributors, Inc. (“PDI”), an affiliated broker-dealer of the Sponsor, and Transfer Agent, licensing fees, accounting and audit fees and expenses, tax preparation expenses, legal fees not in excess of $100,000 per annum, ongoing SEC registration fees not exceeding 0.021% per annum of the NAV of a Fund, FINRA filing fees, individual K-1 preparation and mailing fees not exceeding 0.10% per annum of the NAV of a Fund, and report preparation and mailing expenses.

Non-Recurring Fees and Expenses

Each Fund pays or will pay all of its non-recurring and unusual fees and expenses, if any, as determined by the Sponsor. Non-recurring and unusual fees and expenses are fees and expenses which are unexpected or unusual in nature, such as legal claims and liabilities and litigation costs or indemnification or other unanticipated expenses. Extraordinary fees and expenses also include material expenses which are not currently anticipated obligations of the Funds. Routine operational, administrative and other ordinary expenses are not deemed extraordinary expenses.

Selling Commission

Retail investors may purchase and sell Shares through traditional brokerage accounts. Investors are expected to be charged a customary commission by their brokers in connection with purchases of Shares that will vary from investor to investor. Investors are encouraged to review the terms of their brokerage accounts for applicable charges. The price at which an Authorized Participant sells a Share may be higher or lower than the price paid by such Authorized Participant in connection with the creation of such Share in a Creation Unit.

Brokerage Commissions and Fees

Each Fund, with the exception of the Matching VIX Funds, pays or will pay all of its brokerage commissions, including applicable exchange fees, NFA fees and give-up fees, pit brokerage fees and other transaction related fees and expenses charged in connection with trading activities for each Fund’s investments in CFTC regulated investments. The Sponsor is currently paying brokerage commissions on VIX futures contracts for the Matching VIX Funds.

Other Transaction Costs

The Funds bear or will bear other transaction costs including the effects of trading spreads and financing costs associated with the use of Financial Instruments, and costs relating to the purchase of U.S. Treasury Securities or similar high credit quality short-term fixed-income or similar securities (such as shares of money market funds and collateralized repurchase agreements).

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Employees

The Trust has no employees.

Item 1A. Risk Factors.

These risk factors should be read in connection with the other information included in this Annual Report on Form 10-K, including Management’s Discussion and Analysis of Financial Condition and Results of Operations and the Funds’ Financial Statements and the related Notes to the Funds’ Financial Statements. For purposes of this section:

Risks Specific to the Geared Funds

In addition to the risks described elsewhere in this “Risk Factors” section, the following risks apply to the Geared Funds.

Due to the compounding of daily returns, the Geared Funds’ returns over periods longer than a single day will likely differ in amount and possibly even direction from the Fund multiple times the benchmark return for the period.

Each of the Geared Funds are “geared” funds in the sense that each has an investment objective to correspond (before fees and expenses) to a multiple (e.g., 2x), the inverse (e.g., -1x) or an inverse multiple (e.g., -2x or -3x) of

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the performance of a benchmark on a given day. Each Geared Fund seeks investment results for a single day only, as measured from its NAV calculation time to its next NAV calculation time, and not for any other period. The return of a Geared Fund for a period longer than a single day is the result of its return for each day compounded over the period and usually will differ from two times (2x), the inverse (-1x), two times the inverse (-2x), or three times the inverse (-3x) of the return of the Geared Fund’s benchmark for the period. A Geared Fund will lose money if its benchmark’s performance is flat over time, and it is possible for a Geared Fund to lose money over time even if its benchmark’s performance increases (or decreases in the case of a Short Fund, an UltraShort Fund or the UltraPro Short Fund), as a result of daily rebalancing, the benchmark’s volatility and compounding. Longer holding periods, higher benchmark volatility, inverse exposure and greater leverage each affect the impact of compounding on a Geared Fund’s returns. Daily compounding of a Geared Fund’s investment returns can dramatically and adversely affect its longer-term performance during periods of high volatility. Volatility may be at least as important to a Geared Fund’s return for a period as the return of the Geared Fund’s underlying benchmark.

Each Ultra, each UltraShort or the UltraPro Short Fund uses leverage and should produce daily returns that are more volatile than that of its benchmark. For example, the daily return of an Ultra Fund with a 2x multiple should be approximately two times as volatile on a daily basis as the return of a fund with an objective of matching the same benchmark. The daily return of a Short, an UltraShort and the UltraPro Short Fund is designed to return the inverse (-1x), two times the inverse (-2x), or three times the inverse (-3x) of the return that would be expected of a fund with an objective of matching the same benchmark. The Geared Funds are not appropriate for all investors and present different risks than other funds. The Geared Funds that use leverage are riskier than similarly benchmarked exchange-traded funds that do not use leverage. An investor should only consider an investment in a Geared Fund if he or she understands the consequences of seeking daily leveraged, daily inverse or daily inverse leveraged investment results. Daily objective geared funds, if used properly and in conjunction with the investor’s view on the future direction and volatility of the markets, can be useful tools for investors who want to manage their exposure to various markets and market segments and who are willing to monitor and/or periodically rebalance their portfolios. Shareholders who invest in the Geared Funds should actively manage and monitor their investments, as frequently as daily.

The hypothetical example below illustrates how daily geared fund returns can behave for periods longer than a single day. The example involves a hypothetical fund XYZ that seeks to double the daily performance of benchmark XYZ. On each day, fund XYZ performs in line with its objective (two times (2x) the benchmark’s daily performance before fees and expenses). Notice that over the entire seven-day period, the fund’s total return is more than two times the loss of the period return of the benchmark. For the seven-day period, benchmark XYZ lost 3.26% while fund XYZ lost 7.01% (versus -6.52% or 2 x -3.26%).

This effect is caused by compounding, which exists in all investments, but has a more significant impact in geared funds. In general, during periods of higher benchmark volatility, compounding will cause results for periods longer than a single day to be less than two times (2x) the return of the benchmark (or less than the inverse (-1x), two times the inverse (-2x) or three times the inverse (-3x) times the return of the benchmark for the Short Funds, the

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UltraShort Funds or the UltraPro Short Funds, respectively). This effect becomes more pronounced as volatility increases. Conversely, in periods of lower benchmark volatility (particularly when combined with higher benchmark returns), fund returns over longer periods can be higher than two times (2x) the return of the benchmark. Actual results for a particular period, before fees and expenses, are also dependent on the magnitude of the benchmark return in addition to the benchmark volatility. Similar effects exist for the Short Funds, the UltraShort Funds and the UltraPro Short Funds, and the significance of these effects are even greater with such inverse or inverse leveraged funds.

The graphs that follow illustrate this point. Each of the graphs shows a simulated hypothetical one-year performance of a benchmark compared with the performance of a geared fund that perfectly achieves its geared daily investment objective. The graphs demonstrate that, for periods greater than a single day, a geared fund is likely to underperform or over-perform (but not match) the benchmark performance (or the inverse of the benchmark performance) times the multiple stated as the daily fund objective. Investors should understand the consequences of holding daily rebalanced funds for periods longer than a single day and should actively manage and monitor their investments, as frequently as daily. A one-year period is used solely for illustrative purposes. Deviations from the benchmark return (or the inverse of the benchmark return) times the fund multiple can occur over periods as short as two days (each day as measured from NAV to NAV) and may also occur in periods shorter than a single day (when measured intraday as opposed to NAV to NAV). See “Intraday Price Performance Risk” below for additional details. To isolate the impact of daily leveraged, inverse or inverse leveraged exposure, these graphs assume: a) no fund expenses or transaction costs; b) borrowing/lending rates (to obtain required leverage, inverse, or inverse leveraged exposure) and cash reinvestment rates of zero percent; and c) the fund consistently maintaining perfect exposure (2x, -1x, -2x or -3x) as of the fund’s NAV time each day. If these assumptions were different, the fund’s performance would be different than that shown. If fund expenses, transaction costs and financing expenses greater than zero percent were included, the funds’ performance would also be different than that shown. Each of the graphs also assumes a volatility rate of 67%, which is an approximate average of the five-year historical volatility rate of the most volatile benchmark referenced herein (the Short-Term VIX Index). A benchmark’s volatility rate is a statistical measure of the magnitude of fluctuations in its returns.

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The historical five year average volatility of the benchmarks utilized by the Funds ranges from 11.47 to 66.95, as set forth in the table below.

The tables below illustrate the impact of two factors that affect a Geared Fund’s performance, benchmark volatility and benchmark return. Benchmark volatility is a statistical measure of the magnitude of fluctuations in the returns of a benchmark and is calculated as the standard deviation of the natural logarithms of one plus the benchmark return (calculated daily), multiplied by the square root of the number of trading days per year (assumed to be 252). The tables show estimated fund returns for a number of combinations of benchmark return and benchmark volatility over a one-year period. To isolate the impact of daily leveraged, inverse or inverse leveraged exposure, these graphs assume: a) no fund expenses or transaction costs; b) borrowing/lending rates of zero percent (to obtain required leveraged, inverse or inverse leveraged exposure) and cash reinvestment rates of zero percent; and c) the fund consistently maintaining perfect exposure (2x, -1x, -2x or -3x) as of the fund’s NAV time each day. If these assumptions were different, the fund’s performance would be different than that shown. If fund expenses, transaction costs and financing expenses were included, the fund’s performance would be different than that shown. The tables below show examples in which a Geared Fund has an investment objective to correspond (before fees and expenses) to two times (2x), the inverse (-1), two times the inverse (-2x) or three times the inverse (-3x) of the daily performance of a benchmark. The Geared Fund that has an investment objective to correspond to two times (2x) the daily performance of a benchmark could incorrectly be expected to achieve a 20% return on a yearly basis if the benchmark return was 10%, absent the effects of compounding. However, as the table shows, with a benchmark volatility of 40%, such a fund would return 3.1%. In the charts below, shaded areas represent those scenarios where a geared fund with the investment objective described will outperform (i.e., return more than) the benchmark performance times the stated multiple in the fund’s investment objective; conversely areas not shaded represent those scenarios where the fund will underperform (i.e., return less than) the benchmark performance times the multiple stated as the daily fund objective.

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Estimated Fund Return Over One Year When the Fund Objective is to Seek Daily Investment Results, Before Fees and Expenses, that Correspond to Two Times (2x) the Daily Performance of a Benchmark.