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
ABBOTT LABS COM 002824100 489 11,701 SH   SOLE   0 0 11,701
ABBVIE INC COM 00287Y109 247 4,317 SH   SOLE   0 0 4,317
ACCENTURE PLC IRELAND SHS CLASS A G1151C101 381 3,300 SH   SOLE   0 0 3,300
AFLAC INC COM 001055102 312 4,943 SH   SOLE   0 0 4,943
AIR LEASE CORP CL A 00912X302 21,492 669,115 SH   SOLE   0 0 669,115
AMGEN INC COM 031162100 1,147 7,650 SH   SOLE   0 0 7,650
ASPEN TECHNOLOGY INC COM 045327103 17,199 476,037 SH   SOLE   0 0 476,037
BERKSHIRE HATHAWAY INC DEL CL B NEW 084670702 442 3,115 SH   SOLE   0 0 3,115
BIOGEN INC COM 09062X103 16,895 64,899 SH   SOLE   0 0 64,899
BLACKHAWK NETWORK HLDGS INC COM 09238E104 10,134 295,440 SH   SOLE   0 0 295,440
CARMAX INC COM 143130102 21,184 414,558 SH   SOLE   0 0 414,558
CENTRAL FD CDA LTD CL A 153501101 257 21,400 SH   SOLE   0 0 21,400
COCA COLA CO COM 191216100 928 20,000 SH   SOLE   0 0 20,000
COGNIZANT TECHNOLOGY SOLUTIO CL A 192446102 25,793 411,365 SH   SOLE   0 0 411,365
COLGATE PALMOLIVE CO COM 194162103 838 11,858 SH   SOLE   0 0 11,858
CONOCOPHILLIPS COM 20825C104 269 6,681 SH   SOLE   0 0 6,681
EBAY INC COM 278642103 811 34,000 SH   SOLE   0 0 34,000
EXXON MOBIL CORP COM 30231G102 419 5,014 SH   SOLE   0 0 5,014
FACTSET RESH SYS INC COM 303075105 19,751 130,343 SH   SOLE   0 0 130,343
FASTENAL CO COM 311900104 27,815 567,653 SH   SOLE   0 0 567,653
FIRST FINL BANCORP OH COM 320209109 7,146 393,069 SH   SOLE   0 0 393,069
FISERV INC COM 337738108 242 2,360 SH   SOLE   0 0 2,360
FRANKLIN RES INC COM 354613101 879 22,500 SH   SOLE   0 0 22,500
GILEAD SCIENCES INC COM 375558103 31,057 338,093 SH   SOLE   0 0 338,093
IPG PHOTONICS CORP COM 44980X109 21,596 224,769 SH   SOLE   0 0 224,769
ISHARES TR SHRT NAT MUN ETF 464288158 1,107 10,425 SH   SOLE   0 0 10,425
ISHARES TR CORE S&P500 ETF 464287200 3,837 18,565 SH   SOLE   0 0 18,565
ISHARES TR CORE ST USDB ETF 46432F859 594 5,900 SH   SOLE   0 0 5,900
JOHNSON & JOHNSON COM 478160104 462 4,274 SH   SOLE   0 0 4,274
JPMORGAN CHASE & CO COM 46625H100 347 5,861 SH   SOLE   0 0 5,861
MCDONALDS CORP COM 580135101 1,508 12,000 SH   SOLE   0 0 12,000
NEOGEN CORP COM 640491106 425 8,437 SH   SOLE   0 0 8,437
NORFOLK SOUTHERN CORP COM 655844108 309 3,717 SH   SOLE   0 0 3,717
NORTHERN TR CORP COM 665859104 782 12,000 SH   SOLE   0 0 12,000
O REILLY AUTOMOTIVE INC NEW COM 67103H107 27,210 99,429 SH   SOLE   0 0 99,429
OPKO HEALTH INC COM 68375N103 414 39,850 SH   SOLE   0 0 39,850
PAYPAL HLDGS INC COM 70450Y103 1,390 36,000 SH   SOLE   0 0 36,000
PHILIP MORRIS INTL INC COM 718172109 388 3,950 SH   SOLE   0 0 3,950
PRICE T ROWE GROUP INC COM 74144T108 6,898 93,901 SH   SOLE   0 0 93,901
PRICELINE GRP INC COM NEW 741503403 25,059 19,441 SH   SOLE   0 0 19,441
PROCTER & GAMBLE CO COM 742718109 2,571 31,232 SH   SOLE   0 0 31,232
REALTY INCOME CORP COM 756109104 785 12,550 SH   SOLE   0 0 12,550
ROCKWELL MED INC COM 774374102 196 26,108 SH   SOLE   0 0 26,108
ROPER TECHNOLOGIES INC COM 776696106 28,027 153,346 SH   SOLE   0 0 153,346
SHIRE PLC SPONSORED ADR 82481R106 23,203 134,978 SH   SOLE   0 0 134,978
SIGNATURE BK NEW YORK N Y COM 82669G104 24,613 180,822 SH   SOLE   0 0 180,822
SKYWORKS SOLUTIONS INC COM 83088M102 17,272 221,724 SH   SOLE   0 0 221,724
SPDR S&P 500 ETF TR TR UNIT 78462F103 2,543 12,375 SH   SOLE   0 0 12,375
TRACTOR SUPPLY CO COM 892356106 29,333 324,260 SH   SOLE   0 0 324,260
VARIAN MED SYS INC COM 92220P105 590 5,632 SH   SOLE   0 0 5,632
VISA INC COM CL A 92826C839 35,991 470,598 SH   SOLE   0 0 470,598
WABTEC CORP COM 929740108 22,519 284,008 SH   SOLE   0 0 284,008
WALGREENS BOOTS ALLIANCE INC COM 931427108 303 3,600 SH   SOLE   0 0 3,600
WATERS CORP COM 941848103 1,715 13,000 SH   SOLE   0 0 13,000
ZELTIQ AESTHETICS INC COM 98933Q108 12,331 454,031 SH   SOLE   0 0 454,031