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
2U Inc. COM 90214J101 72,545 863,320 SH   SOLE 859,420 0 0 3,900
A.O. Smith Corp. COM 831865209 15,963 251,035 SH   SOLE 185,535 0 0 65,500
Acadia Healthcare Co Inc COM 00404A109 19,284 492,193 SH   SOLE 363,543 0 0 128,650
Acceleron Pharma Inc COM 00434H108 12,981 332,005 SH   SOLE 330,505 0 0 1,500
Achaogen Inc. COM 004449104 16,633 1,284,411 SH   SOLE 1,161,511 0 0 122,900
ACI Worldwide Inc. COM 004498101 57,861 2,439,335 SH   SOLE 2,101,060 0 0 338,275
Adobe Systems Inc. COM 00724F101 5,146 23,815 SH   SOLE 22,540 0 0 1,275
Aercap Holdings NV SHS N00985106 108,545 2,140,075 SH   SOLE 1,615,775 0 0 524,300
Agilent Technologies Inc COM 00846U101 76,627 1,145,400 SH   SOLE 863,150 0 0 282,250
Albany International Corp CL A 012348108 70,536 1,124,980 SH   SOLE 1,119,880 0 0 5,100
Allegiant Travel Co COM 01748X102 90,651 525,359 SH   SOLE 470,194 0 0 55,165
Alliance Data Systems Cor COM 018581108 80,690 379,075 SH   SOLE 289,745 0 0 89,330
Alphabet Inc Class C CAP STK CL C 02079K107 12,288 11,909 SH   SOLE 11,272 0 0 637
Altice USA Inc CL A 02156K103 49,698 2,689,300 SH   SOLE 2,027,200 0 0 662,100
Amazon.com Inc. COM 023135106 11,040 7,628 SH   SOLE 7,220 0 0 408
Amdocs Limited SHS G02602103 110,201 1,651,700 SH   SOLE 1,266,100 0 0 385,600
Amedisys Inc. COM 023436108 27,110 449,295 SH   SOLE 447,295 0 0 2,000
American Renal Associates COM 029227105 15,080 800,000 SH   SOLE 796,400 0 0 3,600
AMERISAFE Inc. COM 03071H100 26,412 478,040 SH   SOLE 475,840 0 0 2,200
Ametek Inc COM 031100100 84,351 1,110,320 SH   SOLE 849,795 0 0 260,525
Amphenol Corp. Cl A CL A 032095101 88,033 1,022,100 SH   SOLE 770,825 0 0 251,275
Ansys Inc. COM 03662Q105 15,512 99,000 SH   SOLE 73,775 0 0 25,225
Apollo Global Management CL A SHS 037612306 111,870 3,776,825 SH   SOLE 2,784,825 0 0 992,000
Apple Inc COM 037833100 13,479 80,335 SH   SOLE 76,065 0 0 4,270
Argenx SE ADR SPONSORED ADR 04016X101 13,156 163,555 SH   SOLE 162,855 0 0 700
Argo Group International COM G0464B107 21,378 372,440 SH   SOLE 370,810 0 0 1,630
ASGN Incorporated Common Stock 00191U102 122,164 1,491,985 SH   SOLE 1,479,590 0 0 12,395
Assured Guaranty Ltd COM G0585R106 74,020 2,044,755 SH   SOLE 1,531,055 0 0 513,700
Astrazeneca Plc ADR SPONSORED ADR 046353108 4,383 125,330 SH   SOLE 118,645 0 0 6,685
Atento SA ADR SHS L0427L105 16,560 2,123,100 SH   SOLE 2,113,900 0 0 9,200
Atlassian Corporation Plc CL A G06242104 98,551 1,827,721 SH   SOLE 1,396,971 0 0 430,750
Avexis Inc COM 05366U100 44,769 362,265 SH   SOLE 320,815 0 0 41,450
Axalta Coating Systems Lt COM G0750C108 30,354 1,005,436 SH   SOLE 740,036 0 0 265,400
Axis Capital SHS G0692U109 55,405 962,400 SH   SOLE 724,800 0 0 237,600
Beacon Roofing Supply Inc COM 073685109 154,018 2,902,176 SH   SOLE 2,618,966 0 0 283,210
Bio Techne Corp COM 09073M104 77,463 512,865 SH   SOLE 392,325 0 0 120,540
Bio-Rad Laboratories Inc CL A 090572207 145,302 581,022 SH   SOLE 444,972 0 0 136,050
Blackhawk Network Holding COM 09238E104 22,350 500,000 SH   SOLE 495,600 0 0 4,400
BlackLine Inc COM 09239B109 30,560 779,385 SH   SOLE 775,585 0 0 3,800
Blueprint Medicines Corp. COM 09627Y109 76,696 836,375 SH   SOLE 735,425 0 0 100,950
Booz Allen & Hamilton Inc CL A 099502106 222,527 5,747,076 SH   SOLE 4,326,246 0 0 1,420,830
Bright Horizons Family So COM 109194100 176,861 1,773,574 SH   SOLE 1,570,424 0 0 203,150
Broadridge Financial Solu COM 11133T103 64,818 590,916 SH   SOLE 454,916 0 0 136,000
Brunswick Corp. COM 117043109 116,855 1,967,590 SH   SOLE 1,511,940 0 0 455,650
BWX Technologies Inc. COM 05605H100 195,028 3,069,850 SH   SOLE 2,369,535 0 0 700,315
Cable One Inc COM 12685J105 73,226 106,571 SH   SOLE 106,116 0 0 455
Cactus Inc Cl A CL A 127203107 24,237 900,000 SH   SOLE 895,900 0 0 4,100
Cadence BanCorporation CL A 12739A100 46,563 1,710,000 SH   SOLE 1,702,200 0 0 7,800
Capitol Acquisition Corp SHS G1992S109 41,120 3,553,995 SH   SOLE 3,537,895 0 0 16,100
Carlisle Companies Incorp COM 142339100 71,093 680,900 SH   SOLE 512,425 0 0 168,475
Carter's Inc. COM 146229109 38,098 365,972 SH   SOLE 292,972 0 0 73,000
CBRE Group Inc CL A 12504L109 133,987 2,837,500 SH   SOLE 2,088,825 0 0 748,675
Centene Corp. COM 15135B101 77,299 723,300 SH   SOLE 545,125 0 0 178,175
Charles River Laboratorie COM 159864107 91,809 860,120 SH   SOLE 661,870 0 0 198,250
Charles Schwab Corp. COM 808513105 6,206 118,840 SH   SOLE 112,420 0 0 6,420
Chegg Inc COM 163092109 56,731 2,745,955 SH   SOLE 2,733,455 0 0 12,500
Cigna Corporation COM 125509109 3,991 23,790 SH   SOLE 22,515 0 0 1,275
Cintas Corp. COM 172908105 46,330 271,600 SH   SOLE 204,550 0 0 67,050
Circor International Inc. COM 17273K109 28,753 674,005 SH   SOLE 671,005 0 0 3,000
Clean Harbors Inc COM 184496107 93,019 1,905,737 SH   SOLE 1,700,637 0 0 205,100
Cloudera Inc COM 18914U100 30,214 1,400,088 SH   SOLE 1,232,238 0 0 167,850
Cogent Communications Gro COM NEW 19239V302 29,573 681,415 SH   SOLE 678,415 0 0 3,000
Cognex Corp. COM 192422103 13,522 260,085 SH   SOLE 191,085 0 0 69,000
Coherent Inc. COM 192479103 83,834 447,353 SH   SOLE 335,103 0 0 112,250
Columbia Sportswear Co. COM 198516106 15,440 202,018 SH   SOLE 152,818 0 0 49,200
Comcast Corp. Cl A CL A 20030N101 7,490 219,210 SH   SOLE 207,515 0 0 11,695
Comerica Inc. COM 200340107 61,932 645,600 SH   SOLE 486,700 0 0 158,900
CommScope Holding Co Inc COM 20337X109 41,461 1,037,291 SH   SOLE 766,291 0 0 271,000
Concho Resources Inc COM 20605P101 91,927 611,500 SH   SOLE 460,700 0 0 150,800
Copart Inc. COM 217204106 65,837 1,292,700 SH   SOLE 974,700 0 0 318,000
Core Laboratories N V Com COM N22717107 30,310 280,082 SH   SOLE 206,332 0 0 73,750
Core-Mark Holding Co. Inc COM 218681104 12,376 582,140 SH   SOLE 582,140 0 0 0
Cornerstone OnDemand Inc. COM 21925Y103 31,237 798,689 SH   SOLE 588,989 0 0 209,700
Corporacion America Airpo COM L1995B107 123 10,000 SH   SOLE 0 0 0 10,000
Costar Group Inc COM 22160N109 189,782 523,276 SH   SOLE 405,866 0 0 117,410
CubeSmart COM 229663109 13,885 492,389 SH   SOLE 364,289 0 0 128,100
Daseke Inc. COM 23753F107 14,478 1,478,900 SH   SOLE 1,472,200 0 0 6,700
Davita Inc COM 23918K108 106,763 1,619,100 SH   SOLE 1,240,250 0 0 378,850
Dolby Laboratories Inc. C COM 25659T107 114,646 1,803,750 SH   SOLE 1,390,800 0 0 412,950
Dollar Tree Inc. COM 256746108 117,220 1,235,200 SH   SOLE 911,000 0 0 324,200
Domino's Pizza Inc. COM 25754A201 51,360 219,900 SH   SOLE 166,075 0 0 53,825
Ecolab Inc COM 278865100 90,795 662,400 SH   SOLE 499,050 0 0 163,350
Elbit Systems LTD ORD M3760D101 14,474 119,058 SH   SOLE 86,508 0 0 32,550
Electronic Arts Inc. COM 285512109 76,539 631,300 SH   SOLE 475,450 0 0 155,850
elf Beauty Inc COM 26856L103 27,285 1,408,642 SH   SOLE 1,038,642 0 0 370,000
EMCOR Group Inc COM 29084Q100 62,761 805,345 SH   SOLE 801,695 0 0 3,650
Encompass Health Corporat COM 29261A100 29,267 511,922 SH   SOLE 367,522 0 0 144,400
Envestnet Inc. COM 29404K106 24,673 430,600 SH   SOLE 428,600 0 0 2,000
Evolent Health Inc Cl A CL A 30050B101 22,131 1,553,050 SH   SOLE 1,545,450 0 0 7,600
Exela Technologies Inc COM 30162V102 22,974 4,154,400 SH   SOLE 4,135,800 0 0 18,600
Exlservice Holdings Inc COM 302081104 60,232 1,080,011 SH   SOLE 1,074,911 0 0 5,100
Exponent Inc. COM 30214U102 45,187 574,530 SH   SOLE 571,830 0 0 2,700
Facebook Inc CL A 30303M102 7,396 46,285 SH   SOLE 43,810 0 0 2,475
Fair Isaac Corp COM 303250104 49,677 293,305 SH   SOLE 291,830 0 0 1,475
FCB Financial Holdings In CL A 30255G103 20,632 403,760 SH   SOLE 401,960 0 0 1,800
Fidelity National Informa COM 31620M106 84,613 878,635 SH   SOLE 680,605 0 0 198,030
Fleetcor Technologies Inc COM 339041105 176,102 869,640 SH   SOLE 648,255 0 0 221,385
Floor & Decor Holdings In CL A 339750101 79,702 1,529,200 SH   SOLE 1,345,050 0 0 184,150
ForeScout Technologies In COM 34553D101 9,713 299,400 SH   SOLE 298,000 0 0 1,400
Gartner Inc COM 366651107 246,415 2,095,011 SH   SOLE 1,569,111 0 0 525,900
Gates Industrial Corporat ORD SHS G39108108 34,086 1,946,666 SH   SOLE 1,452,666 0 0 494,000
Genesee and Wyoming Inc CL A 371559105 91,413 1,291,325 SH   SOLE 980,925 0 0 310,400
Global Payments Inc COM 37940X102 227,793 2,042,620 SH   SOLE 1,527,260 0 0 515,360
Grand Canyon Education In COM 38526M106 35,658 339,858 SH   SOLE 251,008 0 0 88,850
Grupo Supervielle SA Spon SPONSORED ADR 40054A108 91 3,000 SH   SOLE 0 0 0 3,000
Guidewire Software Inc COM 40171V100 38,096 471,313 SH   SOLE 348,263 0 0 123,050
Hamilton Lane Inc Class A CL A 407497106 46,314 1,244,000 SH   SOLE 1,238,200 0 0 5,800
Healthcare Services Group COM 421906108 39,615 911,100 SH   SOLE 906,950 0 0 4,150
Healthequity Inc COM 42226A107 35,571 587,555 SH   SOLE 584,955 0 0 2,600
Hexcel Corp. COM 428291108 59,894 927,300 SH   SOLE 698,650 0 0 228,650
HFF Inc. Cl A CL A 40418F108 21,167 425,900 SH   SOLE 423,900 0 0 2,000
Hilton Grand Vacations In COM 43283X105 45,202 1,050,717 SH   SOLE 838,367 0 0 212,350
Home Depot Inc. COM 437076102 5,799 32,535 SH   SOLE 30,730 0 0 1,805
Hudson Ltd CL A COM CL A G46408103 36,860 2,316,800 SH   SOLE 2,306,400 0 0 10,400
ICF International Inc. COM 44925C103 35,947 615,000 SH   SOLE 612,100 0 0 2,900
Imax Corporation COM 45245E109 46,886 2,441,971 SH   SOLE 2,163,871 0 0 278,100
Incyte Corporation COM 45337C102 15,916 191,000 SH   SOLE 144,025 0 0 46,975
Inogen Inc. COM 45780L104 40,275 327,867 SH   SOLE 326,367 0 0 1,500
Instructure Inc COM 45781U103 47,321 1,122,690 SH   SOLE 1,117,590 0 0 5,100
Intercontinental Exchange COM 45866F104 4,468 61,615 SH   SOLE 58,320 0 0 3,295
International Flavors & F COM 459506101 73,233 534,900 SH   SOLE 402,775 0 0 132,125
International Game Techno SHS USD G4863A108 78,049 2,919,886 SH   SOLE 2,204,836 0 0 715,050
iRhythm Technologies Inc COM 450056106 42,877 681,120 SH   SOLE 677,820 0 0 3,300
iShares MSCI India ETF MSCI INDIA ETF 46429B598 10 300 SH   SOLE 300 0 0 0
ITT Inc COM 45073V108 30,490 622,508 SH   SOLE 460,508 0 0 162,000
J.B. Hunt Transport Servi COM 445658107 58,716 501,200 SH   SOLE 377,300 0 0 123,900
J2 Global Inc. COM 48123V102 130,801 1,657,388 SH   SOLE 1,465,238 0 0 192,150
Jack Henry and Associates COM 426281101 76,793 634,912 SH   SOLE 491,922 0 0 142,990
K2M Group Holdings Inc COM 48273J107 49,763 2,625,999 SH   SOLE 2,344,399 0 0 281,600
Keane Group Inc COM 48669A108 13,321 900,040 SH   SOLE 894,040 0 0 6,000
Kennedy-Wilson Holdings I COM 489398107 61,475 3,533,068 SH   SOLE 3,517,618 0 0 15,450
Knight Transportation Inc CL A 499049104 23,556 511,984 SH   SOLE 377,084 0 0 134,900
L3 Technologies Inc COM 502413107 112,549 541,100 SH   SOLE 407,550 0 0 133,550
Landstar System Inc. COM 515098101 16,722 152,500 SH   SOLE 112,800 0 0 39,700
Laureate Education Inc CL A 518613203 17,359 1,262,503 SH   SOLE 932,003 0 0 330,500
Leggett & Platt Inc. COM 524660107 117,214 2,642,334 SH   SOLE 1,977,509 0 0 664,825
Liberty Oilfield Services COM CL A 53115L104 5,067 300,000 SH   SOLE 300,000 0 0 0
Lithia Motors Inc. Cl A CL A 536797103 28,749 286,005 SH   SOLE 284,505 0 0 1,500
Littelfuse Inc. COM 537008104 85,455 410,488 SH   SOLE 362,188 0 0 48,300
LogMeIn Inc. COM 54142L109 44,849 388,134 SH   SOLE 300,034 0 0 88,100
Loxo Oncology Inc COM 548862101 25,824 223,834 SH   SOLE 202,634 0 0 21,200
M I Acquistions Inc COM 55304A104 20,888 2,000,810 SH   SOLE 1,991,310 0 0 9,500
Martin Marietta Materials COM 573284106 116,938 564,100 SH   SOLE 433,050 0 0 131,050
Marvell Technology Group ORD G5876H105 88,578 4,218,000 SH   SOLE 3,185,700 0 0 1,032,300
Matador Resources Company COM 576485205 59,676 1,995,170 SH   SOLE 1,780,620 0 0 214,550
Maximus Inc COM 577933104 28,271 423,600 SH   SOLE 421,600 0 0 2,000
McCormick & Co. Inc. COM NON VTG 579780206 70,675 664,300 SH   SOLE 500,600 0 0 163,700
Mednax Inc COM 58502B106 27,811 499,930 SH   SOLE 370,930 0 0 129,000
Meta Financial Group Inc COM 59100U108 43,428 397,690 SH   SOLE 395,890 0 0 1,800
MGP Ingredients Inc. COM 55303J106 58,302 650,770 SH   SOLE 647,170 0 0 3,600
Microchip Technology Inc. COM 595017104 79,200 866,900 SH   SOLE 652,925 0 0 213,975
Microsemi Corp COM 595137100 26 400 SH   SOLE 400 0 0 0
Microsoft Corp. COM 594918104 13,056 143,050 SH   SOLE 135,395 0 0 7,655
Middleby Corp. COM 596278101 33,529 270,854 SH   SOLE 202,104 0 0 68,750
Milacron Holdings Corp COM 59870L106 40,638 2,017,800 SH   SOLE 2,008,600 0 0 9,200
Mindbody Inc CLA COM CL A 60255W105 33,678 865,750 SH   SOLE 861,750 0 0 4,000
MKS Instruments Inc. COM 55306N104 100,242 866,770 SH   SOLE 862,270 0 0 4,500
Monro Inc. COM 610236101 50,798 947,724 SH   SOLE 943,174 0 0 4,550
MuleSoft Inc. Class A CL A 625207105 43,980 1,000,000 SH   SOLE 834,300 0 0 165,700
MyoKardia Inc COM 62857M105 12,508 256,315 SH   SOLE 255,115 0 0 1,200
National Instruments Corp COM 636518102 31,429 621,493 SH   SOLE 458,693 0 0 162,800
National Storage Affiliat COM SHS BEN IN 637870106 24,419 973,660 SH   SOLE 969,260 0 0 4,400
National Vision Holdings COM 63845R107 54,999 1,702,235 SH   SOLE 1,694,635 0 0 7,600
Netflix Inc. COM 64110L106 5,247 17,765 SH   SOLE 16,820 0 0 945
Neurocrine Biosciences In COM 64125C109 149,279 1,800,062 SH   SOLE 1,360,137 0 0 439,925
New Relic Inc COM 64829B100 26,172 353,100 SH   SOLE 351,500 0 0 1,600
NICE Ltd ADR 653656108 31,589 336,304 SH   SOLE 247,504 0 0 88,800
Nielsen Holdings PLC SHS EUR G6518L108 48,588 1,528,400 SH   SOLE 1,150,300 0 0 378,100
Nordson Corporation COM 655663102 137,598 1,009,228 SH   SOLE 767,528 0 0 241,700
O'Reilly Automotive Inc COM 67103H107 100,609 406,700 SH   SOLE 310,075 0 0 96,625
Old Dominion Freight Line COM 679580100 14,482 98,540 SH   SOLE 78,240 0 0 20,300
Ollie s Bargain Outlet Ho COM 681116109 22,207 368,280 SH   SOLE 366,580 0 0 1,700
Open Text Corporation COM 683715106 51,713 1,486,000 SH   SOLE 1,160,275 0 0 325,725
PacWest Bancorp. COM 695263103 73,547 1,484,889 SH   SOLE 1,175,884 0 0 309,005
PagSeguro Digital Ltd Cl COM CL A G68707101 50,330 1,313,424 SH   SOLE 969,424 0 0 344,000
Pampa Energia SA Sponsore SPONS ADR LVL I 697660207 72 1,200 SH   SOLE 0 0 0 1,200
Papa John's International COM 698813102 50,651 883,968 SH   SOLE 773,768 0 0 110,200
Paycom Software Inc. COM 70432V102 58,457 544,340 SH   SOLE 541,790 0 0 2,550
Paylocity Holding Corp COM 70438V106 48,558 947,848 SH   SOLE 700,648 0 0 247,200
Pegasystems Inc. COM 705573103 58,831 970,000 SH   SOLE 965,500 0 0 4,500
Performance Foods Group C COM 71377A103 33,321 1,116,281 SH   SOLE 832,081 0 0 284,200
Planet Fitness Inc Cla CL A 72703H101 25,477 674,532 SH   SOLE 501,232 0 0 173,300
PolyOne Corp. COM 73179P106 29,951 704,400 SH   SOLE 701,000 0 0 3,400
Pool Corporation COM 73278L105 73,198 500,600 SH   SOLE 376,650 0 0 123,950
Pra Health Sciences Inc COM 69354M108 27,129 327,015 SH   SOLE 325,515 0 0 1,500
Premier Inc CL A 74051N102 87,654 2,799,550 SH   SOLE 2,098,550 0 0 701,000
Proassurance Corporation COM 74267C106 90,908 1,872,469 SH   SOLE 1,633,619 0 0 238,850
Progressive Corp. COM 743315103 270,578 4,440,800 SH   SOLE 3,305,450 0 0 1,135,350
Q2 Holdings Inc COM 74736L109 70,943 1,557,468 SH   SOLE 1,550,268 0 0 7,200
Radius Health Inc COM NEW 750469207 80,811 2,248,486 SH   SOLE 2,026,686 0 0 221,800
RBC Bearings Inc COM 75524B104 42,187 339,668 SH   SOLE 337,968 0 0 1,700
RealPage Inc COM 75606N109 52,610 1,021,553 SH   SOLE 1,016,953 0 0 4,600
Red Hat Inc COM 756577102 92,891 621,300 SH   SOLE 468,050 0 0 153,250
Reis Inc COM 75936P105 6,391 297,953 SH   SOLE 293,253 0 0 4,700
Renaissancere Holdings Lt COM G7496G103 129,347 933,848 SH   SOLE 698,773 0 0 235,075
Repligen Corp. COM 759916109 83,961 2,320,633 SH   SOLE 2,056,333 0 0 264,300
Rexnord Holdings Inc COM 76169B102 38,939 1,311,962 SH   SOLE 1,305,862 0 0 6,100
Rosetta Stone Inc. COM 777780107 9,885 751,700 SH   SOLE 748,300 0 0 3,400
Ross Stores Inc. COM 778296103 84,429 1,082,700 SH   SOLE 815,300 0 0 267,400
RPM International Inc COM 749685103 54,101 1,134,897 SH   SOLE 883,697 0 0 251,200
Ryanair Holdings plc - SP SPONSORED ADR NE 783513203 107,144 872,150 SH   SOLE 671,125 0 0 201,025
S&P Global COM 78409V104 68,419 358,100 SH   SOLE 277,465 0 0 80,635
Sarepta Therapeutics Inc COM 803607100 49,500 668,100 SH   SOLE 619,700 0 0 48,400
SBA Communications Corp CL A 78410G104 242,085 1,416,365 SH   SOLE 1,053,925 0 0 362,440
Science Applications Inte COM 808625107 35,406 449,320 SH   SOLE 449,320 0 0 0
Servicemaster Global Hold COM 81761R109 104,228 2,049,708 SH   SOLE 1,535,033 0 0 514,675
Shenandoah Telecommunicat COM 82312B106 56,629 1,573,025 SH   SOLE 1,565,925 0 0 7,100
Sienna Biopharmaceuticals COM 82622H108 6,765 360,200 SH   SOLE 358,600 0 0 1,600
Signature Bank COM 82669G104 87,766 618,287 SH   SOLE 461,837 0 0 156,450
Solaris Oilfield Infrastr COM CL A 83418M103 26,870 1,622,570 SH   SOLE 1,615,170 0 0 7,400
Strayer Education Inc. COM 863236105 59,317 587,005 SH   SOLE 584,405 0 0 2,600
Summit Materials Inc CL A 86614U100 51,229 1,691,859 SH   SOLE 1,517,460 0 0 174,399
Sunopta Inc COM 8676EP108 20,276 2,855,755 SH   SOLE 2,841,155 0 0 14,600
Surgery Partners Inc COM 86881A100 16,824 980,981 SH   SOLE 778,881 0 0 202,100
Talend SA ADR ADS 874224207 50,076 1,040,650 SH   SOLE 1,035,850 0 0 4,800
TD Ameritrade Holding Cor COM 87236Y108 94,821 1,600,900 SH   SOLE 1,206,000 0 0 394,900
The Ultimate Software Gro COM 90385D107 102,448 420,387 SH   SOLE 328,207 0 0 92,180
Transdigm Group Inc COM 893641100 84,416 275,025 SH   SOLE 211,885 0 0 63,140
Transunion COM 89400J107 218,374 3,845,959 SH   SOLE 2,969,034 0 0 876,925
Trinet Group Inc COM 896288107 67,547 1,458,270 SH   SOLE 1,451,670 0 0 6,600
Tyler Technologies Inc. COM 902252105 166,596 789,703 SH   SOLE 600,753 0 0 188,950
Ulta Salon Cosmetics & Fr COM 90384S303 63,405 310,400 SH   SOLE 234,125 0 0 76,275
UniFirst Corp. COM 904708104 46,454 287,375 SH   SOLE 286,075 0 0 1,300
Universal Display Corp. COM 91347P105 30,297 299,969 SH   SOLE 230,869 0 0 69,100
VanEck Vectors India Smal INDIA SMALL CAP 92189F767 11 200 SH   SOLE 200 0 0 0
Verisk Analytics Inc. Cl COM 92345Y106 160,958 1,547,675 SH   SOLE 1,156,890 0 0 390,785
Vertex Pharmaceuticals In COM 92532F100 84,803 520,330 SH   SOLE 398,920 0 0 121,410
Viad Corp. COM NEW 92552R406 32,885 626,975 SH   SOLE 624,175 0 0 2,800
Visa Inc. COM CL A 92826C839 11,285 94,340 SH   SOLE 89,325 0 0 5,015
Wabco Holdings Inc COM 92927K102 71,800 536,344 SH   SOLE 401,719 0 0 134,625
WABTEC Corporation COM 929740108 88,154 1,082,975 SH   SOLE 809,650 0 0 273,325
WageWorks Inc COM 930427109 118,211 2,615,298 SH   SOLE 2,342,668 0 0 272,630
Waste Connections Inc. COM 94106B101 144,018 2,007,500 SH   SOLE 1,473,025 0 0 534,475
Watsco Inc. COM 942622200 74,890 413,825 SH   SOLE 309,625 0 0 104,200
Wex Inc COM 96208T104 218,301 1,393,825 SH   SOLE 1,234,525 0 0 159,300
WideOpenWest Inc COM 96758W101 1,634 228,500 SH   SOLE 155,500 0 0 73,000
William Lyon Homes Shs A CL A NEW 552074700 15,517 564,445 SH   SOLE 561,545 0 0 2,900
Williams Scotsman Corp COM 971375126 30,542 2,237,480 SH   SOLE 2,227,380 0 0 10,100
Wintrust Financial Corp. COM 97650W108 36,304 421,900 SH   SOLE 318,700 0 0 103,200
WisdomTree Investments In COM 97717P104 79,727 8,694,323 SH   SOLE 7,845,623 0 0 848,700
WNS Holdings Ltd ADR SPON ADR 92932M101 56,440 1,245,092 SH   SOLE 921,592 0 0 323,500
Woodward Inc. COM 980745103 38,877 542,527 SH   SOLE 394,327 0 0 148,200
World Pay Inc CL A CL A 981558109 103,606 1,259,800 SH   SOLE 949,175 0 0 310,625
Zayo Group Holdings Inc COM 98919V105 62,168 1,819,900 SH   SOLE 1,370,600 0 0 449,300