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 111,802 1,337,990 SH   SOLE   1,222,690 0 115,300
A.O. Smith Corp. COM 831865209 25,073 423,885 SH   SOLE   316,885 0 107,000
Acceleron Pharma Inc COM 00434H108 18,275 376,655 SH   SOLE   376,655 0 0
Achaogen Inc. COM 004449104 10,536 1,216,611 SH   SOLE   1,111,111 0 105,500
ACI Worldwide Inc. COM 004498101 57,950 2,349,010 SH   SOLE   2,046,235 0 302,775
Adobe Systems Inc. COM 00724F101 5,766 23,650 SH   SOLE   22,515 0 1,135
Aercap Holdings NV SHS N00985106 108,234 1,998,775 SH   SOLE   1,515,275 0 483,500
Agilent Technologies Inc COM 00846U101 62,026 1,003,000 SH   SOLE   751,225 0 251,775
Albany International Corp CL A 012348108 70,430 1,170,900 SH   SOLE   1,170,900 0 0
Allegiant Travel Co COM 01748X102 70,984 510,859 SH   SOLE   454,659 0 56,200
Alliance Data Systems Cor COM 018581108 88,604 379,950 SH   SOLE   288,575 0 91,375
Alphabet Inc Class C CAP STK CL C 02079K107 13,180 11,814 SH   SOLE   11,257 0 557
Altice USA Inc CL A 02156K103 51,902 3,042,300 SH   SOLE   2,277,100 0 765,200
Amazon.com Inc. COM 023135106 12,856 7,563 SH   SOLE   7,210 0 353
Amdocs Limited SHS G02602103 104,812 1,583,500 SH   SOLE   1,207,450 0 376,050
Amedisys Inc. COM 023436108 28,113 328,965 SH   SOLE   328,965 0 0
American Renal Associates COM 029227105 12,356 783,500 SH   SOLE   783,500 0 0
AMERISAFE Inc. COM 03071H100 32,378 560,662 SH   SOLE   560,662 0 0
Ametek Inc COM 031100100 77,432 1,073,065 SH   SOLE   818,465 0 254,600
Amphenol Corp. Cl A CL A 032095101 92,832 1,065,200 SH   SOLE   797,800 0 267,400
Apollo Global Management CL A SHS 037612306 133,334 4,183,675 SH   SOLE   3,158,975 0 1,024,700
Apple Inc COM 037833100 14,326 77,390 SH   SOLE   73,755 0 3,635
Argenx SE ADR SPONSORED ADR 04016X101 12,599 152,055 SH   SOLE   152,055 0 0
Argo Group International COM G0464B107 40,137 690,225 SH   SOLE   690,225 0 0
ASGN Incorporated COM 00191U102 119,488 1,528,170 SH   SOLE   1,522,855 0 5,315
Assured Guaranty Ltd COM G0585R106 67,433 1,887,300 SH   SOLE   1,414,450 0 472,850
Astrazeneca Plc ADR SPONSORED ADR 046353108 4,576 130,330 SH   SOLE   124,200 0 6,130
Atento SA ADR SHS L0427L105 14,280 2,084,600 SH   SOLE   2,084,600 0 0
Atlassian Corporation Plc CL A G06242104 90,748 1,451,500 SH   SOLE   1,104,075 0 347,425
Axalta Coating Systems Lt COM G0750C108 40,053 1,321,436 SH   SOLE   984,836 0 336,600
Beacon Roofing Supply Inc COM 073685109 156,187 3,664,641 SH   SOLE   3,324,501 0 340,140
Bio Techne Corp COM 09073M104 40,686 275,000 SH   SOLE   206,700 0 68,300
Bio-Rad Laboratories Inc CL A 090572207 158,201 548,282 SH   SOLE   420,157 0 128,125
BJs Wholesale Club Holdin COM 05550J101 38,121 1,611,900 SH   SOLE   1,611,900 0 0
BlackLine Inc COM 09239B109 44,289 1,019,785 SH   SOLE   1,019,785 0 0
Blueprint Medicines Corp. COM 09627Y109 67,983 1,070,940 SH   SOLE   958,640 0 112,300
Booz Allen & Hamilton Inc CL A 099502106 230,915 5,280,476 SH   SOLE   3,982,581 0 1,297,895
Bottomline Technologies I COM 101388106 35,242 707,240 SH   SOLE   707,240 0 0
Bright Horizons Family So COM 109194100 184,491 1,799,564 SH   SOLE   1,616,294 0 183,270
BrightView Holdings Inc COM 10948C107 2,544 115,900 SH   SOLE   115,900 0 0
Broadridge Financial Solu COM 11133T103 33,427 290,416 SH   SOLE   216,616 0 73,800
Brunswick Corp. COM 117043109 119,997 1,860,990 SH   SOLE   1,418,515 0 442,475
BWX Technologies Inc. COM 05605H100 181,993 2,920,300 SH   SOLE   2,241,175 0 679,125
Cable One Inc COM 12685J105 110,779 151,071 SH   SOLE   139,621 0 11,450
Cactus Inc Cl A CL A 127203107 27,056 800,700 SH   SOLE   800,700 0 0
Cadence BanCorporation CL A 12739A100 52,364 1,813,800 SH   SOLE   1,813,800 0 0
Capitol Acquisition Corp SHS G1992S109 51,972 3,476,400 SH   SOLE   3,476,400 0 0
Carlisle Companies Incorp COM 142339100 83,799 773,700 SH   SOLE   579,525 0 194,175
Carter's Inc. COM 146229109 44,556 411,072 SH   SOLE   328,022 0 83,050
Cavium Inc. COM 14964U108 27,386 316,600 SH   SOLE   237,100 0 79,500
CBRE Group Inc CL A 12504L109 126,134 2,642,100 SH   SOLE   1,914,425 0 727,675
Centene Corp. COM 15135B101 87,319 708,700 SH   SOLE   530,800 0 177,900
Charles River Laboratorie COM 159864107 113,346 1,009,670 SH   SOLE   786,170 0 223,500
Charles Schwab Corp. COM 808513105 6,021 117,820 SH   SOLE   112,285 0 5,535
Chegg Inc COM 163092109 63,085 2,270,050 SH   SOLE   2,270,050 0 0
Cintas Corp. COM 172908105 50,857 274,800 SH   SOLE   205,300 0 69,500
Circor International Inc. COM 17273K109 34,767 940,675 SH   SOLE   940,675 0 0
Clean Harbors Inc COM 184496107 100,088 1,801,757 SH   SOLE   1,619,257 0 182,500
Cogent Communications Gro COM NEW 19239V302 31,329 586,680 SH   SOLE   586,680 0 0
Cognex Corp. COM 192422103 21,662 485,585 SH   SOLE   372,085 0 113,500
Columbia Sportswear Co. COM 198516106 16,922 185,000 SH   SOLE   139,100 0 45,900
Comcast Corp. Cl A CL A 20030N101 7,337 223,615 SH   SOLE   213,110 0 10,505
Comerica Inc. COM 200340107 13,638 150,000 SH   SOLE   112,850 0 37,150
CommScope Holding Co Inc COM 20337X109 23,358 799,791 SH   SOLE   597,991 0 201,800
Concho Resources Inc COM 20605P101 89,180 644,600 SH   SOLE   483,150 0 161,450
Copart Inc. COM 217204106 62,725 1,109,000 SH   SOLE   830,700 0 278,300
Core Laboratories N V Com COM N22717107 32,057 254,000 SH   SOLE   189,000 0 65,000
Cornerstone OnDemand Inc. COM 21925Y103 26,561 560,000 SH   SOLE   419,000 0 141,000
Corporacion America Airpo COM L1995B107 76 9,000 SH   SOLE   0 0 9,000
Costar Group Inc COM 22160N109 201,597 488,566 SH   SOLE   380,901 0 107,665
Coupa Software Incorporat COM 22266L106 17,427 280,000 SH   SOLE   222,500 0 57,500
Davita Inc COM 23918K108 128,804 1,854,900 SH   SOLE   1,412,625 0 442,275
Dolby Laboratories Inc. C COM 25659T107 119,173 1,931,800 SH   SOLE   1,480,800 0 451,000
Dollar Tree Inc. COM 256746108 61,353 721,800 SH   SOLE   540,325 0 181,475
Domino's Pizza Inc. COM 25754A201 59,989 212,600 SH   SOLE   159,200 0 53,400
Ecolab Inc COM 278865100 90,050 641,700 SH   SOLE   480,500 0 161,200
Electronic Arts Inc. COM 285512109 86,213 611,350 SH   SOLE   457,900 0 153,450
elf Beauty Inc COM 26856L103 19,221 1,261,242 SH   SOLE   936,642 0 324,600
EMCOR Group Inc COM 29084Q100 56,434 740,795 SH   SOLE   740,795 0 0
Encompass Health Corporat COM 29261A100 56,876 839,872 SH   SOLE   672,622 0 167,250
Entegris Inc. COM 29362U104 68,600 2,023,600 SH   SOLE   1,515,250 0 508,350
Evo Payments Inc Class A COM 26927E104 50,355 2,446,800 SH   SOLE   2,446,800 0 0
Evolent Health Inc Cl A CL A 30050B101 32,043 1,522,250 SH   SOLE   1,522,250 0 0
Exela Technologies Inc COM 30162V102 20,154 4,243,000 SH   SOLE   4,243,000 0 0
Exlservice Holdings Inc COM 302081104 56,744 1,002,366 SH   SOLE   1,002,366 0 0
Exponent Inc. COM 30214U102 50,326 1,041,940 SH   SOLE   1,041,940 0 0
Facebook Inc CL A 30303M102 8,922 45,915 SH   SOLE   43,760 0 2,155
Fair Isaac Corp COM 303250104 67,855 351,000 SH   SOLE   351,000 0 0
Fidelity National Informa COM 31620M106 76,176 718,435 SH   SOLE   553,780 0 164,655
Fleetcor Technologies Inc COM 339041105 165,231 784,385 SH   SOLE   577,715 0 206,670
Floor & Decor Holdings In CL A 339750101 85,264 1,728,450 SH   SOLE   1,541,950 0 186,500
ForeScout Technologies In COM 34553D101 21,272 620,900 SH   SOLE   620,900 0 0
Gartner Inc COM 366651107 268,172 2,017,850 SH   SOLE   1,501,725 0 516,125
Gates Industrial Corporat ORD SHS G39108108 30,385 1,867,566 SH   SOLE   1,398,266 0 469,300
Genesee and Wyoming Inc CL A 371559105 17,163 211,050 SH   SOLE   172,350 0 38,700
Global Payments Inc COM 37940X102 232,261 2,083,245 SH   SOLE   1,534,580 0 548,665
Grand Canyon Education In COM 38526M106 53,791 481,958 SH   SOLE   376,558 0 105,400
GreenSky Inc Class A CL A 39572G100 56,488 2,670,805 SH   SOLE   2,074,430 0 596,375
Grubhub Inc COM 400110102 91,954 876,500 SH   SOLE   657,500 0 219,000
Guidewire Software Inc COM 40171V100 32,520 366,300 SH   SOLE   275,600 0 90,700
Hamilton Lane Inc Class A CL A 407497106 43,410 904,950 SH   SOLE   904,950 0 0
Health Insurance Innovati COM CL A 42225K106 25,575 790,570 SH   SOLE   790,570 0 0
Healthcare Services Group COM 421906108 49,513 1,146,400 SH   SOLE   1,146,400 0 0
Healthequity Inc COM 42226A107 35,139 467,895 SH   SOLE   467,895 0 0
Henry Schein Inc. COM 806407102 42,625 586,800 SH   SOLE   439,750 0 147,050
Hexcel Corp. COM 428291108 61,163 921,400 SH   SOLE   689,500 0 231,900
HFF Inc. Cl A CL A 40418F108 20,328 591,780 SH   SOLE   591,780 0 0
Hilton Grand Vacations In COM 43283X105 42,185 1,215,717 SH   SOLE   978,367 0 237,350
Home Depot Inc. COM 437076102 7,622 39,065 SH   SOLE   37,230 0 1,835
Hudson Ltd CL A COM CL A G46408103 42,988 2,457,840 SH   SOLE   2,457,840 0 0
ICF International Inc. COM 44925C103 32,365 455,530 SH   SOLE   455,530 0 0
Imax Corporation COM 45245E109 56,208 2,537,591 SH   SOLE   2,284,991 0 252,600
Inogen Inc. COM 45780L104 40,467 217,180 SH   SOLE   217,180 0 0
Inspire Medical Systems I COM 457730109 23,532 659,900 SH   SOLE   659,900 0 0
Instructure Inc COM 45781U103 66,258 1,557,180 SH   SOLE   1,557,180 0 0
International Game Techno SHS USD G4863A108 79,443 3,418,386 SH   SOLE   2,582,836 0 835,550
iRhythm Technologies Inc COM 450056106 40,516 499,390 SH   SOLE   499,390 0 0
iShares MSCI India ETF MSCI INDIA ETF 46429B598 489 14,700 SH   SOLE   14,700 0 0
ITT Inc COM 45073V108 38,492 736,408 SH   SOLE   564,358 0 172,050
J.B. Hunt Transport Servi COM 445658107 53,190 437,600 SH   SOLE   327,425 0 110,175
J2 Global Inc. COM 48123V102 147,095 1,698,358 SH   SOLE   1,529,758 0 168,600
Jack Henry and Associates COM 426281101 69,982 536,840 SH   SOLE   420,200 0 116,640
K2M Group Holdings Inc COM 48273J107 54,659 2,429,299 SH   SOLE   2,183,999 0 245,300
Kennedy-Wilson Holdings I COM 489398107 69,294 3,276,333 SH   SOLE   3,276,333 0 0
Knight Transportation Inc CL A 499049104 35,917 939,984 SH   SOLE   703,034 0 236,950
L3 Technologies Inc COM 502413107 103,776 539,600 SH   SOLE   404,250 0 135,350
Laureate Education Inc CL A 518613203 21,881 1,526,903 SH   SOLE   1,156,703 0 370,200
Leggett & Platt Inc. COM 524660107 117,222 2,625,934 SH   SOLE   1,973,034 0 652,900
Lithia Motors Inc. Cl A CL A 536797103 27,822 294,195 SH   SOLE   294,195 0 0
Littelfuse Inc. COM 537008104 87,685 384,278 SH   SOLE   341,578 0 42,700
LogMeIn Inc. COM 54142L109 30,975 300,000 SH   SOLE   223,400 0 76,600
Loxo Oncology Inc COM 548862101 29,360 169,244 SH   SOLE   150,464 0 18,780
M I Acquistions Inc COM 55304A104 23,523 2,240,310 SH   SOLE   2,240,310 0 0
Martin Marietta Materials COM 573284106 124,529 557,600 SH   SOLE   425,650 0 131,950
Marvell Technology Group ORD G5876H105 110,386 5,148,600 SH   SOLE   3,892,300 0 1,256,300
Matador Resources Company COM 576485205 73,267 2,438,165 SH   SOLE   2,161,165 0 277,000
McCormick & Co. Inc. COM NON VTG 579780206 79,545 685,200 SH   SOLE   513,000 0 172,200
Mednax Inc COM 58502B106 19,420 448,700 SH   SOLE   335,000 0 113,700
Meta Financial Group Inc COM 59100U108 47,764 490,390 SH   SOLE   490,390 0 0
MGP Ingredients Inc. COM 55303J106 39,919 449,490 SH   SOLE   449,490 0 0
Microchip Technology Inc. COM 595017104 48,940 538,100 SH   SOLE   403,150 0 134,950
Microsoft Corp. COM 594918104 14,494 146,980 SH   SOLE   140,075 0 6,905
Milacron Holdings Corp COM 59870L106 36,815 1,944,800 SH   SOLE   1,944,800 0 0
Mindbody Inc CLA COM CL A 60255W105 33,774 874,980 SH   SOLE   874,980 0 0
MKS Instruments Inc. COM 55306N104 94,707 989,625 SH   SOLE   890,375 0 99,250
Mohawk Industries Inc COM 608190104 55,560 259,300 SH   SOLE   194,525 0 64,775
Monolithic Power Systems COM 609839105 86,698 648,600 SH   SOLE   485,450 0 163,150
Monro Inc. COM 610236101 70,199 1,208,249 SH   SOLE   1,208,249 0 0
MorphoSys AG ADR SPONSORED ADS 617760202 19,418 640,000 SH   SOLE   478,100 0 161,900
MyoKardia Inc COM 62857M105 21,062 424,200 SH   SOLE   424,200 0 0
National Instruments Corp COM 636518102 20,809 495,693 SH   SOLE   369,393 0 126,300
National Storage Affiliat COM SHS BEN IN 637870106 24,039 779,995 SH   SOLE   779,995 0 0
National Vision Holdings COM 63845R107 67,489 1,845,485 SH   SOLE   1,845,485 0 0
Netflix Inc. COM 64110L106 6,899 17,625 SH   SOLE   16,800 0 825
Neurocrine Biosciences In COM 64125C109 145,554 1,481,612 SH   SOLE   1,124,512 0 357,100
New Relic Inc COM 64829B100 25,247 250,990 SH   SOLE   250,990 0 0
NICE Ltd SPONSORED ADR 653656108 47,055 453,454 SH   SOLE   355,154 0 98,300
Nielsen Holdings PLC SHS EUR G6518L108 44,088 1,425,400 SH   SOLE   1,066,900 0 358,500
NLight Inc COM 65487K100 15,651 473,400 SH   SOLE   473,400 0 0
Nordson Corporation COM 655663102 129,075 1,005,178 SH   SOLE   767,778 0 237,400
Novocure Ltd ORD SHS G6674U108 46,509 1,485,900 SH   SOLE   1,371,800 0 114,100
O'Reilly Automotive Inc COM 67103H107 114,133 417,200 SH   SOLE   316,250 0 100,950
Ollie s Bargain Outlet Ho COM 681116109 24,556 338,710 SH   SOLE   338,710 0 0
Open Text Corporation COM 683715106 47,630 1,353,500 SH   SOLE   1,060,950 0 292,550
PacWest Bancorp. COM 695263103 70,690 1,430,399 SH   SOLE   1,141,554 0 288,845
PagSeguro Digital Ltd Cl COM CL A G68707101 44,567 1,606,024 SH   SOLE   1,226,324 0 379,700
Papa John's International COM 698813102 43,135 850,448 SH   SOLE   754,148 0 96,300
Paycom Software Inc. COM 70432V102 41,791 422,860 SH   SOLE   422,860 0 0
Paylocity Holding Corp COM 70438V106 96,379 1,637,428 SH   SOLE   1,416,078 0 221,350
Paypal Inc COM 70450Y103 7,463 89,630 SH   SOLE   85,440 0 4,190
Pegasystems Inc. COM 705573103 35,412 646,200 SH   SOLE   646,200 0 0
Performance Foods Group C COM 71377A103 36,055 982,431 SH   SOLE   748,531 0 233,900
Planet Fitness Inc Cla CL A 72703H101 30,070 684,332 SH   SOLE   530,132 0 154,200
PluralSight Inc Cl A COM CL A 72941B106 51,282 2,097,435 SH   SOLE   1,981,135 0 116,300
PolyOne Corp. COM 73179P106 29,543 683,550 SH   SOLE   683,550 0 0
Pool Corporation COM 73278L105 70,084 462,600 SH   SOLE   346,525 0 116,075
Pra Health Sciences Inc COM 69354M108 34,915 373,980 SH   SOLE   373,980 0 0
Proassurance Corporation COM 74267C106 63,688 1,796,569 SH   SOLE   1,576,419 0 220,150
Progressive Corp. COM 743315103 264,655 4,474,305 SH   SOLE   3,294,530 0 1,179,775
Q2 Holdings Inc COM 74736L109 78,958 1,384,007 SH   SOLE   1,384,007 0 0
Radius Health Inc COM NEW 750469207 68,771 2,333,586 SH   SOLE   2,101,186 0 232,400
RBC Bearings Inc COM 75524B104 45,178 350,731 SH   SOLE   350,731 0 0
RealPage Inc COM 75606N109 87,549 1,588,903 SH   SOLE   1,588,903 0 0
Red Hat Inc COM 756577102 90,256 671,700 SH   SOLE   508,125 0 163,575
Reis Inc COM 75936P105 5,204 238,708 SH   SOLE   238,708 0 0
Renaissancere Holdings Lt COM G7496G103 92,676 770,248 SH   SOLE   581,898 0 188,350
Repligen Corp. COM 759916109 97,679 2,076,506 SH   SOLE   1,854,606 0 221,900
Rexnord Holdings Inc COM 76169B102 37,454 1,288,862 SH   SOLE   1,288,862 0 0
Rhythm Pharmaceuticals In COM 76243J105 18,390 588,285 SH   SOLE   588,285 0 0
Rosetta Stone Inc. COM 777780107 25,315 1,579,200 SH   SOLE   1,579,200 0 0
Ross Stores Inc. COM 778296103 83,877 989,700 SH   SOLE   741,000 0 248,700
RPM International Inc COM 749685103 56,856 974,897 SH   SOLE   767,597 0 207,300
Ryanair Holdings plc - SP SPONSORED ADR NE 783513203 78,979 691,400 SH   SOLE   517,725 0 173,675
S&P Global COM 78409V104 6,731 33,015 SH   SOLE   31,465 0 1,550
Sarepta Therapeutics Inc COM 803607100 94,892 717,900 SH   SOLE   568,375 0 149,525
SBA Communications Corp CL A 78410G104 241,457 1,462,310 SH   SOLE   1,077,180 0 385,130
Science Applications Inte COM 808625107 23,489 290,240 SH   SOLE   290,240 0 0
SendGrid Inc COM 816883102 29,037 1,094,900 SH   SOLE   1,094,900 0 0
Servicemaster Global Hold COM 81761R109 133,035 2,237,008 SH   SOLE   1,716,333 0 520,675
Shenandoah Telecommunicat COM 82312B106 48,759 1,491,090 SH   SOLE   1,491,090 0 0
Signature Bank COM 82669G104 76,726 599,987 SH   SOLE   447,962 0 152,025
Solaris Oilfield Infrastr COM CL A 83418M103 32,773 2,293,440 SH   SOLE   2,293,440 0 0
Strayer Education Inc. COM 863236105 70,118 620,460 SH   SOLE   620,460 0 0
Summit Materials Inc CL A 86614U100 62,734 2,389,882 SH   SOLE   2,157,879 0 232,003
Sunopta Inc COM 8676EP108 23,566 2,805,455 SH   SOLE   2,805,455 0 0
Surgery Partners Inc COM 86881A100 10,293 690,800 SH   SOLE   546,800 0 144,000
Talend SA ADR ADS 874224207 45,458 729,900 SH   SOLE   729,900 0 0
TD Ameritrade Holding Cor COM 87236Y108 96,844 1,768,200 SH   SOLE   1,324,000 0 444,200
The Ultimate Software Gro COM 90385D107 102,829 399,630 SH   SOLE   319,840 0 79,790
Transdigm Group Inc COM 893641100 77,952 225,855 SH   SOLE   172,705 0 53,150
Transunion COM 89400J107 266,405 3,718,660 SH   SOLE   2,836,345 0 882,315
Trinet Group Inc COM 896288107 75,310 1,346,270 SH   SOLE   1,346,270 0 0
Tyler Technologies Inc. COM 902252105 169,975 765,308 SH   SOLE   590,538 0 174,770
Ulta Salon Cosmetics & Fr COM 90384S303 72,373 310,000 SH   SOLE   231,675 0 78,325
UniFirst Corp. COM 904708104 41,850 236,575 SH   SOLE   236,575 0 0
Universal Display Corp. COM 91347P105 24,473 284,569 SH   SOLE   216,769 0 67,800
US Foods Holding Corp COM 912008109 60,875 1,609,600 SH   SOLE   1,205,700 0 403,900
USA Technologies Inc COM NO PAR 90328S500 24,968 1,783,400 SH   SOLE   1,783,400 0 0
VanEck Vectors India Smal INDIA SMALL CAP 92189F767 467 9,600 SH   SOLE   9,600 0 0
Varonis Systems Inc. COM 922280102 8,862 118,950 SH   SOLE   118,950 0 0
Verisk Analytics Inc. Cl COM 92345Y106 157,723 1,465,280 SH   SOLE   1,083,980 0 381,300
Vertex Pharmaceuticals In COM 92532F100 116,220 683,810 SH   SOLE   519,130 0 164,680
Viad Corp. COM NEW 92552R406 34,617 638,100 SH   SOLE   638,100 0 0
Visa Inc. COM CL A 92826C839 12,399 93,615 SH   SOLE   89,220 0 4,395
Wabco Holdings Inc COM 92927K102 86,448 738,744 SH   SOLE   554,494 0 184,250
WageWorks Inc COM 930427109 123,545 2,470,898 SH   SOLE   2,230,368 0 240,530
Waste Connections Inc. COM 94106B101 126,184 1,676,200 SH   SOLE   1,220,825 0 455,375
Wellcare Health Plans Inc COM 94946T106 52,621 213,700 SH   SOLE   159,275 0 54,425
Wex Inc COM 96208T104 104,002 545,997 SH   SOLE   423,997 0 122,000
William Lyon Homes Shs A CL A NEW 552074700 11,385 490,715 SH   SOLE   490,715 0 0
Williams Scotsman Corp COM 971375126 27,229 1,839,800 SH   SOLE   1,839,800 0 0
Willis Towers Watson Publ SHS G96629103 67,295 443,900 SH   SOLE   332,125 0 111,775
Wintrust Financial Corp. COM 97650W108 35,612 409,100 SH   SOLE   305,900 0 103,200
WisdomTree Investments In COM 97717P104 83,407 9,185,808 SH   SOLE   8,399,708 0 786,100
WNS Holdings Ltd ADR SPON ADR 92932M101 57,476 1,101,500 SH   SOLE   823,100 0 278,400
Woodward Inc. COM 980745103 40,331 524,727 SH   SOLE   398,127 0 126,600
World Pay Inc CL A CL A 981558109 96,173 1,176,000 SH   SOLE   883,600 0 292,400
Zayo Group Holdings Inc COM 98919V105 75,455 2,068,400 SH   SOLE   1,549,200 0 519,200