The Securities and Exchange Commission has not necessarily reviewed the information in this filing and has not determined if it is accurate and complete.
The reader should not assume that the information is accurate and complete.

UNITED STATES SECURITIES AND EXCHANGE COMMISSION
Washington, D.C. 20549
FORM 13F

FORM 13F INFORMATION TABLE
OMB APPROVAL
OMB Number: 3235-0006
Estimated average burden
hours per response: 23.8
COLUMN 1 COLUMN 2 COLUMN 3 COLUMN 4 COLUMN 5 COLUMN 6 COLUMN 7 COLUMN 8
VALUE SHRS OR SH/ PUT/ INVESTMENT OTHER VOTING AUTHORITY
NAME OF ISSUER TITLE OF CLASS CUSIP (x$1000) PRN AMT PRN CALL DISCRETION MANAGER SOLE SHARED NONE
AbbVie, Inc. COM 00287Y109 25,149 265,700 SH   SOLE 0 265,700 0 0
Accenture plc Class A COM G1151C101 20,492 133,500 SH   SOLE 0 133,500 0 0
Adams Natural Resources Fund, Inc. COM 00548F105 39,887 2,186,774 SH   SOLE 0 2,186,774 0 0
Adobe Systems Incorporated COM 00724F101 25,325 117,200 SH   SOLE 0 117,200 0 0
Advance Auto Parts, Inc. COM 00751Y106 19,739 166,500 SH   SOLE 0 166,500 0 0
Alexion Pharmaceuticals, Inc. COM 015351109 11,949 107,200 SH   SOLE 0 107,200 0 0
Alphabet Inc. Class A COM 02079K305 32,048 30,900 SH   SOLE 0 30,900 0 0
Alphabet Inc. Class C COM 02079K107 28,990 28,097 SH   SOLE 0 28,097 0 0
Amazon.com, Inc. COM 023135106 61,946 42,800 SH   SOLE 0 42,800 0 0
American Express Company COM 025816109 9,515 102,000 SH   SOLE 0 102,000 0 0
American Tower Corporation COM 03027X100 12,485 85,900 SH   SOLE 0 85,900 0 0
Andeavor COM 03349M105 6,838 68,000 SH   SOLE 0 68,000 0 0
Apple Inc. COM 037833100 66,508 396,400 SH   SOLE 0 396,400 0 0
AT&T Inc. COM 00206R102 9,347 262,200 SH   SOLE 0 262,200 0 0
Bank of America Corporation COM 060505104 41,134 1,371,600 SH   SOLE 0 1,371,600 0 0
Becton, Dickinson and Company COM 075887109 21,193 97,800 SH   SOLE 0 97,800 0 0
Berkshire Hathaway Inc. Class B COM 084670702 38,400 192,500 SH   SOLE 0 192,500 0 0
Biogen Inc. COM 09062X103 18,346 67,000 SH   SOLE 0 67,000 0 0
BlackRock, Inc. COM 09247X101 22,427 41,400 SH   SOLE 0 41,400 0 0
Boeing Company COM 097023105 33,181 101,200 SH   SOLE 0 101,200 0 0
Broadcom Limited COM Y09827109 21,939 93,100 SH   SOLE 0 93,100 0 0
Carnival Corporation COM 143658300 9,083 138,500 SH   SOLE 0 138,500 0 0
CenterPoint Energy, Inc. COM 15189T107 10,987 401,000 SH   SOLE 0 401,000 0 0
Chubb Limited COM H1467J104 10,777 78,800 SH   SOLE 0 78,800 0 0
Cintas Corporation COM 172908105 14,755 86,500 SH   SOLE 0 86,500 0 0
Cisco Systems, Inc. COM 17275R102 11,662 271,900 SH   SOLE 0 271,900 0 0
Coca-Cola Company COM 191216100 7,027 161,800 SH   SOLE 0 161,800 0 0
Cognizant Technology Solutions Corporation Class A COM 192446102 6,021 74,800 SH   SOLE 0 74,800 0 0
Comcast Corporation Class A COM 20030N101 28,812 843,200 SH   SOLE 0 843,200 0 0
Concho Resources Inc. COM 20605P101 10,959 72,900 SH   SOLE 0 72,900 0 0
Constellation Brands, Inc. Class A COM 21036P108 13,812 60,600 SH   SOLE 0 60,600 0 0
Consumer Discretionary Select Sector SPDR Fund COM 81369Y407 5,672 56,000 SH   SOLE 0 56,000 0 0
Costco Wholesale Corporation COM 22160K105 14,679 77,900 SH   SOLE 0 77,900 0 0
Cummins Inc. COM 231021106 22,060 136,100 SH   SOLE 0 136,100 0 0
CVS Health Corporation COM 126650100 10,874 174,800 SH   SOLE 0 174,800 0 0
Delta Air Lines, Inc. COM 247361702 15,467 282,200 SH   SOLE 0 282,200 0 0
Dollar General Corporation COM 256677105 18,143 193,937 SH   SOLE 0 193,937 0 0
DowDuPont Inc. COM 26078J100 13,162 206,600 SH   SOLE 0 206,600 0 0
DXC Technology Co. COM 23355L106 14,376 143,000 SH   SOLE 0 143,000 0 0
Edwards Lifesciences Corporation COM 28176E108 21,081 151,100 SH   SOLE 0 151,100 0 0
Emerson Electric Co. COM 291011104 17,608 257,800 SH   SOLE 0 257,800 0 0
Exelon Corporation COM 30161N101 11,676 299,300 SH   SOLE 0 299,300 0 0
Exxon Mobil Corporation COM 30231G102 23,002 308,300 SH   SOLE 0 308,300 0 0
Facebook, Inc. Class A COM 30303M102 30,152 188,700 SH   SOLE 0 188,700 0 0
Freeport-McMoRan, Inc. COM 35671D857 7,286 414,700 SH   SOLE 0 414,700 0 0
General Electric Company COM 369604103 3,323 246,500 SH   SOLE 0 246,500 0 0
Goldman Sachs Group, Inc. COM 38141G104 20,753 82,400 SH   SOLE 0 82,400 0 0
Halliburton Company COM 406216101 16,636 354,400 SH   SOLE 0 354,400 0 0
Home Depot, Inc. COM 437076102 36,129 202,700 SH   SOLE 0 202,700 0 0
Honeywell International Inc. COM 438516106 27,890 193,000 SH   SOLE 0 193,000 0 0
Intercontinental Exchange, Inc. COM 45866F104 27,550 379,900 SH   SOLE 0 379,900 0 0
Johnson & Johnson COM 478160104 17,031 132,900 SH   SOLE 0 132,900 0 0
JPMorgan Chase & Co. COM 46625H100 32,155 292,400 SH   SOLE 0 292,400 0 0
Laboratory Corporation of America Holdings COM 50540R409 17,420 107,700 SH   SOLE 0 107,700 0 0
Lam Research Corporation COM 512807108 13,551 66,700 SH   SOLE 0 66,700 0 0
Lowe's Companies, Inc. COM 548661107 17,647 201,100 SH   SOLE 0 201,100 0 0
LyondellBasell Industries N.V. COM N53745100 9,902 93,700 SH   SOLE 0 93,700 0 0
Magna International Inc. COM 559222401 14,200 252,000 SH   SOLE 0 252,000 0 0
Mastercard Incorporated Class A COM 57636Q104 25,871 147,700 SH   SOLE 0 147,700 0 0
Microsoft Corporation COM 594918104 76,375 836,800 SH   SOLE 0 836,800 0 0
Monster Beverage Corporation COM 61174X109 8,988 157,100 SH   SOLE 0 157,100 0 0
Netflix, Inc. COM 64110L106 4,755 16,100 SH   SOLE 0 16,100 0 0
NextEra Energy, Inc. COM 65339F101 16,170 99,000 SH   SOLE 0 99,000 0 0
Oracle Corporation COM 68389X105 5,591 122,200 SH   SOLE 0 122,200 0 0
Parker-Hannifin Corporation COM 701094104 17,685 103,400 SH   SOLE 0 103,400 0 0
PepsiCo, Inc. COM 713448108 14,670 134,400 SH   SOLE 0 134,400 0 0
Pfizer Inc. COM 717081103 24,947 702,940 SH   SOLE 0 702,940 0 0
Philip Morris International Inc. COM 718172109 29,353 295,300 SH   SOLE 0 295,300 0 0
Pioneer Natural Resources Company COM 723787107 9,929 57,800 SH   SOLE 0 57,800 0 0
Procter & Gamble Company COM 742718109 10,453 131,850 SH   SOLE 0 131,850 0 0
Prologis, Inc. COM 74340W103 22,147 351,600 SH   SOLE 0 351,600 0 0
Public Service Enterprise Group Incorporated COM 744573106 8,737 173,900 SH   SOLE 0 173,900 0 0
Public Storage COM 74460D109 17,254 86,100 SH   SOLE 0 86,100 0 0
salesforce.com, inc. COM 79466L302 21,074 181,200 SH   SOLE 0 181,200 0 0
SBA Communications Corporation Class A COM 78410G104 7,999 46,800 SH   SOLE 0 46,800 0 0
Signature Bank COM 82669G104 18,297 128,900 SH   SOLE 0 128,900 0 0
SunTrust Banks, Inc. COM 867914103 25,726 378,100 SH   SOLE 0 378,100 0 0
Thermo Fisher Scientific Inc. COM 883556102 30,019 145,400 SH   SOLE 0 145,400 0 0
Union Pacific Corporation COM 907818108 29,507 219,500 SH   SOLE 0 219,500 0 0
UnitedHealth Group Incorporated COM 91324P102 34,754 162,400 SH   SOLE 0 162,400 0 0
Verizon Communications Inc. COM 92343V104 8,206 171,600 SH   SOLE 0 171,600 0 0
Visa Inc. Class A COM 92826C839 37,202 311,000 SH   SOLE 0 311,000 0 0
Walmart Inc. COM 931142103 22,892 257,300 SH   SOLE 0 257,300 0 0
Walt Disney Company COM 254687106 6,910 68,800 SH   SOLE 0 68,800 0 0
Waters Corporation COM 941848103 12,356 62,200 SH   SOLE 0 62,200 0 0
Wells Fargo & Company COM 949746101 18,789 358,500 SH   SOLE 0 358,500 0 0
Acadia Realty Trust COM 004239109 531 21,600 SH   DFND 1 0 0 21,600
Advanced Energy Industries, Inc. COM 007973100 492 7,700 SH   DFND 1 0 0 7,700
Aegion Corporation COM 00770F104 690 30,100 SH   DFND 1 0 0 30,100
Akebia Therapeutics, Inc. COM 00972D105 272 28,500 SH   DFND 1 0 0 28,500
ALLETE, Inc. COM 018522300 802 11,100 SH   DFND 1 0 0 11,100
AMAG Pharmaceuticals, Inc. COM 00163U106 433 21,500 SH   DFND 1 0 0 21,500
American Equity Investment Life Holding Company COM 025676206 664 22,600 SH   DFND 1 0 0 22,600
American Outdoor Brands Corporation COM 02874P103 511 49,500 SH   DFND 1 0 0 49,500
Amicus Therapeutics, Inc. COM 03152W109 525 34,900 SH   DFND 1 0 0 34,900
Amkor Technology, Inc. COM 031652100 460 45,400 SH   DFND 1 0 0 45,400
AMN Healthcare Services, Inc. COM 001744101 840 14,800 SH   DFND 1 0 0 14,800
Archrock Inc. COM 03957W106 447 51,100 SH   DFND 1 0 0 51,100
Aspen Technology, Inc. COM 045327103 1,073 13,600 SH   DFND 1 0 0 13,600
Banner Corporation COM 06652V208 727 13,100 SH   DFND 1 0 0 13,100
Barnes Group Inc. COM 067806109 874 14,600 SH   DFND 1 0 0 14,600
Belden Inc. COM 077454106 717 10,400 SH   DFND 1 0 0 10,400
Benchmark Electronics, Inc. COM 08160H101 758 25,400 SH   DFND 1 0 0 25,400
Blucora, Inc. COM 095229100 745 30,300 SH   DFND 1 0 0 30,300
Boston Beer Company, Inc. Class A COM 100557107 624 3,300 SH   DFND 1 0 0 3,300
Cardtronics plc Class A COM G1991C105 747 33,500 SH   DFND 1 0 0 33,500
Carolina Financial Corp COM 143873107 845 21,500 SH   DFND 1 0 0 21,500
Cathay General Bancorp COM 149150104 840 21,000 SH   DFND 1 0 0 21,000
Central Pacific Financial Corp. COM 154760409 734 25,800 SH   DFND 1 0 0 25,800
Cirrus Logic, Inc. COM 172755100 329 8,100 SH   DFND 1 0 0 8,100
CNO Financial Group, Inc. COM 12621E103 787 36,300 SH   DFND 1 0 0 36,300
Cogent Communications Holdings Inc COM 19239V302 799 18,400 SH   DFND 1 0 0 18,400
CommVault Systems, Inc. COM 204166102 709 12,400 SH   DFND 1 0 0 12,400
Continental Building Products, Inc. COM 211171103 822 28,800 SH   DFND 1 0 0 28,800
Costamare Inc. COM Y1771G102 658 105,500 SH   DFND 1 0 0 105,500
CSG Systems International, Inc. COM 126349109 879 19,400 SH   DFND 1 0 0 19,400
Customers Bancorp, Inc. COM 23204G100 665 22,800 SH   DFND 1 0 0 22,800
CyrusOne, Inc. COM 23283R100 737 14,400 SH   DFND 1 0 0 14,400
CytomX Therapeutics, Inc. COM 23284F105 552 19,400 SH   DFND 1 0 0 19,400
Dana Incorporated COM 235825205 680 26,400 SH   DFND 1 0 0 26,400
Darling Ingredients Inc. COM 237266101 580 33,500 SH   DFND 1 0 0 33,500
DCT Industrial Trust Inc. COM 233153204 845 15,000 SH   DFND 1 0 0 15,000
Delek US Holdings Inc COM 24665A103 899 22,100 SH   DFND 1 0 0 22,100
Deluxe Corporation COM 248019101 703 9,500 SH   DFND 1 0 0 9,500
EMCOR Group, Inc. COM 29084Q100 772 9,900 SH   DFND 1 0 0 9,900
Emergent BioSolutions Inc. COM 29089Q105 732 13,900 SH   DFND 1 0 0 13,900
Empire State Realty Trust, Inc. Class A COM 292104106 591 35,200 SH   DFND 1 0 0 35,200
Enanta Pharmaceuticals, Inc. COM 29251M106 874 10,800 SH   DFND 1 0 0 10,800
Encompass Health Corporation COM 29261A100 806 14,100 SH   DFND 1 0 0 14,100
Essent Group Ltd. COM G3198U102 792 18,600 SH   DFND 1 0 0 18,600
Esterline Technologies Corporation COM 297425100 607 8,300 SH   DFND 1 0 0 8,300
Ethan Allen Interiors Inc. COM 297602104 466 20,300 SH   DFND 1 0 0 20,300
Exact Sciences Corporation COM 30063P105 444 11,000 SH   DFND 1 0 0 11,000
ExlService Holdings, Inc. COM 302081104 708 12,700 SH   DFND 1 0 0 12,700
Federal Agricultural Mortgage Corporation Class C COM 313148306 931 10,700 SH   DFND 1 0 0 10,700
Flagstar Bancorp, Inc. COM 337930705 782 22,100 SH   DFND 1 0 0 22,100
Gray Television, Inc. COM 389375106 611 48,100 SH   DFND 1 0 0 48,100
Greenbrier Companies, Inc. COM 393657101 965 19,200 SH   DFND 1 0 0 19,200
Halcon Resources Corporation COM 40537Q605 373 76,500 SH   DFND 1 0 0 76,500
Halozyme Therapeutics, Inc. COM 40637H109 635 32,400 SH   DFND 1 0 0 32,400
Halyard Health Inc COM 40650V100 760 16,500 SH   DFND 1 0 0 16,500
Harsco Corporation COM 415864107 981 47,500 SH   DFND 1 0 0 47,500
Herman Miller, Inc. COM 600544100 690 21,600 SH   DFND 1 0 0 21,600
Heron Therapeutics Inc COM 427746102 726 26,300 SH   DFND 1 0 0 26,300
Highwoods Properties, Inc. COM 431284108 618 14,100 SH   DFND 1 0 0 14,100
Horizon Pharma plc COM G4617B105 525 37,000 SH   DFND 1 0 0 37,000
Independent Bank Corporation COM 453838609 838 36,600 SH   DFND 1 0 0 36,600
Ingles Markets, Incorporated Class A COM 457030104 606 17,900 SH   DFND 1 0 0 17,900
Inogen, Inc. COM 45780L104 983 8,000 SH   DFND 1 0 0 8,000
Inter Parfums, Inc. COM 458334109 707 15,000 SH   DFND 1 0 0 15,000
j2 Global, Inc. COM 48123V102 813 10,300 SH   DFND 1 0 0 10,300
Kaiser Aluminum Corporation COM 483007704 646 6,400 SH   DFND 1 0 0 6,400
KapStone Paper and Packaging Corporation COM 48562P103 1,012 29,500 SH   DFND 1 0 0 29,500
KLX, Inc. COM 482539103 895 12,600 SH   DFND 1 0 0 12,600
Lannett Company, Inc. COM 516012101 491 30,600 SH   DFND 1 0 0 30,600
Lantheus Holdings Inc COM 516544103 552 34,700 SH   DFND 1 0 0 34,700
Ligand Pharmaceuticals Incorporated COM 53220K504 628 3,800 SH   DFND 1 0 0 3,800
Lithia Motors, Inc. Class A COM 536797103 754 7,500 SH   DFND 1 0 0 7,500
Marriott Vacations Worldwide Corporation COM 57164Y107 946 7,100 SH   DFND 1 0 0 7,100
Matador Resources Company COM 576485205 733 24,500 SH   DFND 1 0 0 24,500
MGIC Investment Corporation COM 552848103 787 60,500 SH   DFND 1 0 0 60,500
Minerals Technologies Inc. COM 603158106 522 7,800 SH   DFND 1 0 0 7,800
MKS Instruments, Inc. COM 55306N104 729 6,300 SH   DFND 1 0 0 6,300
National Health Investors, Inc. COM 63633D104 585 8,700 SH   DFND 1 0 0 8,700
Nelnet, Inc. Class A COM 64031N108 760 14,500 SH   DFND 1 0 0 14,500
Newpark Resources, Inc. COM 651718504 523 64,600 SH   DFND 1 0 0 64,600
NIC Inc. COM 62914B100 527 39,600 SH   DFND 1 0 0 39,600
Old Second Bancorp, Inc. COM 680277100 909 65,400 SH   DFND 1 0 0 65,400
OraSure Technologies, Inc. COM 68554V108 566 33,500 SH   DFND 1 0 0 33,500
Party City Holdco, Inc. COM 702149105 836 53,600 SH   DFND 1 0 0 53,600
Pattern Energy Group, Inc. Class A COM 70338P100 512 29,600 SH   DFND 1 0 0 29,600
Paycom Software, Inc. COM 70432V102 1,235 11,500 SH   DFND 1 0 0 11,500
Pebblebrook Hotel Trust COM 70509V100 766 22,300 SH   DFND 1 0 0 22,300
Penn National Gaming, Inc. COM 707569109 785 29,900 SH   DFND 1 0 0 29,900
PennyMac Mortgage Investment Trust COM 70931T103 763 42,300 SH   DFND 1 0 0 42,300
Perry Ellis International, Inc. COM 288853104 1,037 40,200 SH   DFND 1 0 0 40,200
Phibro Animal Health Corporation Class A COM 71742Q106 496 12,500 SH   DFND 1 0 0 12,500
Photronics, Inc. COM 719405102 444 53,800 SH   DFND 1 0 0 53,800
Piper Jaffray Companies COM 724078100 615 7,400 SH   DFND 1 0 0 7,400
PNM Resources, Inc. COM 69349H107 734 19,200 SH   DFND 1 0 0 19,200
PolyOne Corporation COM 73179P106 629 14,800 SH   DFND 1 0 0 14,800
Portland General Electric Company COM 736508847 656 16,200 SH   DFND 1 0 0 16,200
PRA Health Sciences, Inc. COM 69354M108 763 9,200 SH   DFND 1 0 0 9,200
Progress Software Corporation COM 743312100 807 21,000 SH   DFND 1 0 0 21,000
RadNet, Inc. COM 750491102 1,021 70,900 SH   DFND 1 0 0 70,900
Red Robin Gourmet Burgers, Inc. COM 75689M101 696 12,000 SH   DFND 1 0 0 12,000
Resources Connection, Inc. COM 76122Q105 860 53,100 SH   DFND 1 0 0 53,100
RLJ Lodging Trust COM 74965L101 535 27,500 SH   DFND 1 0 0 27,500
Ruth's Hospitality Group, Inc. COM 783332109 919 37,600 SH   DFND 1 0 0 37,600
Sanmina-SCI Corporation COM 801056102 622 23,800 SH   DFND 1 0 0 23,800
Schnitzer Steel Industries, Inc. Class A COM 806882106 628 19,400 SH   DFND 1 0 0 19,400
Sinclair Broadcast Group, Inc. Class A COM 829226109 560 17,900 SH   DFND 1 0 0 17,900
Sotheby's Class A COM 835898107 821 16,000 SH   DFND 1 0 0 16,000
SPX Corporation COM 784635104 1,036 31,900 SH   DFND 1 0 0 31,900
Stifel Financial Corp. COM 860630102 604 10,200 SH   DFND 1 0 0 10,200
Tech Data Corporation COM 878237106 775 9,100 SH   DFND 1 0 0 9,100
Tenet Healthcare Corporation COM 88033G407 914 37,700 SH   DFND 1 0 0 37,700
Tetra Tech, Inc. COM 88162G103 959 19,600 SH   DFND 1 0 0 19,600
Travelport Worldwide Ltd. COM G9019D104 712 43,600 SH   DFND 1 0 0 43,600
Trinseo SA COM L9340P101 755 10,200 SH   DFND 1 0 0 10,200
TTM Technologies, Inc. COM 87305R109 913 59,700 SH   DFND 1 0 0 59,700
Umpqua Holdings Corporation COM 904214103 794 37,100 SH   DFND 1 0 0 37,100
Unit Corporation COM 909218109 587 29,700 SH   DFND 1 0 0 29,700
United Community Banks, Inc. COM 90984P303 820 25,900 SH   DFND 1 0 0 25,900
Univar, Inc. COM 91336L107 713 25,700 SH   DFND 1 0 0 25,700
Virtusa Corporation COM 92827P102 640 13,200 SH   DFND 1 0 0 13,200
Walker & Dunlop, Inc. COM 93148P102 1,064 17,900 SH   DFND 1 0 0 17,900
WellCare Health Plans, Inc. COM 94946T106 833 4,300 SH   DFND 1 0 0 4,300
Wintrust Financial Corporation COM 97650W108 886 10,300 SH   DFND 1 0 0 10,300
YRC Worldwide Inc. COM 984249607 609 69,000 SH   DFND 1 0 0 69,000
Zumiez Inc. COM 989817101 961 40,200 SH   DFND 1 0 0 40,200