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 25,431 1,562,125 SH   SOLE   1,562,125 0 0
Acceleron Pharma Inc COM 00434H108 41,442 1,048,900 SH   SOLE   1,048,900 0 0
ACI Worldwide Inc. COM 004498101 65,211 2,081,763 SH   SOLE   2,081,763 0 0
Adaptive Biotechnologies COM 00650F109 34,062 1,102,321 SH   SOLE   1,102,321 0 0
Addus Home Care Corp COM 006739106 68,569 864,900 SH   SOLE   864,900 0 0
Adobe Inc. COM 00724F101 5,648 20,445 SH   SOLE   19,555 0 890
Aercap Holdings NV SHS N00985106 75,641 1,381,575 SH   SOLE   1,162,300 0 219,275
Albany International Corp CL A 012348108 80,087 888,280 SH   SOLE   888,280 0 0
Alphabet Inc Class C CAP STK CL C 02079K107 14,110 11,575 SH   SOLE   11,065 0 510
Altice USA Inc CL A 02156K103 76,799 2,677,800 SH   SOLE   2,125,950 0 551,850
Amazon.com Inc. COM 023135106 16,543 9,530 SH   SOLE   9,110 0 420
Amdocs Limited SHS G02602103 75,967 1,149,100 SH   SOLE   911,300 0 237,800
AMERISAFE Inc. COM 03071H100 22,832 345,362 SH   SOLE   345,362 0 0
Ametek Inc COM 031100100 63,262 688,980 SH   SOLE   562,215 0 126,765
Amphenol Corp. Cl A CL A 032095101 54,764 567,500 SH   SOLE   461,825 0 105,675
Apergy Corporation COM 03755L104 18,996 702,240 SH   SOLE   702,240 0 0
Apollo Global Management CL A SHS 037612306 117,104 3,096,350 SH   SOLE   2,657,650 0 438,700
AptarGroup Inc. COM 038336103 14,427 121,800 SH   SOLE   121,800 0 0
APTIV Plc SHS G6095L109 55,494 634,800 SH   SOLE   503,650 0 131,150
Argenx SE ADR SPONSORED ADR 04016X101 14,058 123,355 SH   SOLE   123,355 0 0
ASGN Incorporated COM 00191U102 84,343 1,341,763 SH   SOLE   1,337,178 0 4,585
Assured Guaranty Ltd COM G0585R106 55,593 1,250,400 SH   SOLE   993,200 0 257,200
Atlassian Corporation Plc CL A G06242104 49,110 391,500 SH   SOLE   310,600 0 80,900
Avalara Inc COM 05338G106 117,075 1,739,860 SH   SOLE   1,507,220 0 232,640
Axon Enterprise Inc COM 05464C101 28,873 508,500 SH   SOLE   508,500 0 0
Beacon Roofing Supply Inc COM 073685109 57,757 1,722,546 SH   SOLE   1,722,546 0 0
Best, Inc. Sponsored ADR SPONSORED ADS 08653C106 28,841 5,462,400 SH   SOLE   3,788,000 0 1,674,400
BJs Wholesale Club Holdin COM 05550J101 69,645 2,692,130 SH   SOLE   2,692,130 0 0
Blueprint Medicines Corp. COM 09627Y109 62,436 849,820 SH   SOLE   849,820 0 0
Booz Allen & Hamilton Inc CL A 099502106 195,689 2,755,400 SH   SOLE   2,368,550 0 386,850
Bottomline Technologies I COM 101388106 19,607 498,270 SH   SOLE   498,270 0 0
Bridgebio Pharma Inc COM 10806X102 11,558 538,330 SH   SOLE   538,330 0 0
Bright Horizons Family So COM 109194100 59,109 387,600 SH   SOLE   385,515 0 2,085
Broadridge Financial Solu COM 11133T103 43,426 349,000 SH   SOLE   349,000 0 0
Brooks Automation Inc. COM 114340102 40,659 1,098,000 SH   SOLE   1,098,000 0 0
Brunswick Corp. COM 117043109 72,967 1,399,973 SH   SOLE   1,181,923 0 218,050
Burlington Stores Inc COM 122017106 66,640 333,500 SH   SOLE   264,500 0 69,000
BWX Technologies Inc. COM 05605H100 118,184 2,065,800 SH   SOLE   1,791,600 0 274,200
Cable One Inc COM 12685J105 51,873 41,343 SH   SOLE   41,343 0 0
Cabot Microelectronics Co COM 12709P103 26,615 188,480 SH   SOLE   188,480 0 0
Cactus Inc Cl A CL A 127203107 28,387 980,875 SH   SOLE   980,875 0 0
Cadence BanCorporation CL A 12739A100 37,138 2,117,320 SH   SOLE   2,117,320 0 0
Callaway Golf Co. COM 131193104 41,913 2,159,360 SH   SOLE   2,159,360 0 0
Casella Waste Systems Inc CL A 147448104 23,626 550,200 SH   SOLE   550,200 0 0
CBRE Group Inc CL A 12504L109 194,369 3,666,640 SH   SOLE   2,922,365 0 744,275
Centene Corp. COM 15135B101 65,837 1,521,900 SH   SOLE   1,208,150 0 313,750
Charles River Laboratorie COM 159864107 133,396 1,007,750 SH   SOLE   890,625 0 117,125
Chegg Inc COM 163092109 56,712 1,893,570 SH   SOLE   1,893,570 0 0
Chemed Corp. COM 16359R103 64,521 154,515 SH   SOLE   124,515 0 30,000
Chewy Inc - Class A CL A 16679L109 33,033 1,343,900 SH   SOLE   1,059,650 0 284,250
Cintas Corp. COM 172908105 66,811 249,200 SH   SOLE   197,825 0 51,375
Circor International Inc. COM 17273K109 25,932 690,600 SH   SOLE   690,600 0 0
Cision Ltd. SHS G1992S109 37,711 4,903,885 SH   SOLE   4,903,885 0 0
Clean Harbors Inc COM 184496107 111,384 1,442,800 SH   SOLE   1,442,800 0 0
Cogent Communications Gro COM NEW 19239V302 34,779 631,190 SH   SOLE   631,190 0 0
Cognex Corp. COM 192422103 10,563 215,000 SH   SOLE   215,000 0 0
Colliers International Gr SUB VTG SHS 194693107 24,954 332,500 SH   SOLE   332,500 0 0
Comcast Corp. Cl A CL A 20030N101 7,399 164,135 SH   SOLE   156,940 0 7,195
Copart Inc. COM 217204106 68,449 852,100 SH   SOLE   677,300 0 174,800
Costar Group Inc COM 22160N109 108,066 182,175 SH   SOLE   147,820 0 34,355
Coupa Software Incorporat COM 22266L106 91,392 705,345 SH   SOLE   622,065 0 83,280
Covetrus Inc COM 22304C100 3,508 295,000 SH   SOLE   295,000 0 0
Cryoport Inc COM PAR $0.001 229050307 22,002 1,345,300 SH   SOLE   1,345,300 0 0
Cushman & Wakefield PLC SHS G2717B108 54,046 2,916,700 SH   SOLE   2,916,700 0 0
Cyberark Software Ltd SHS M2682V108 36,624 366,900 SH   SOLE   282,600 0 84,300
DataDog Inc Class A CL A COM 23804L103 28,600 843,400 SH   SOLE   717,500 0 125,900
Dolby Laboratories Inc. C COM CL A 25659T107 77,600 1,200,500 SH   SOLE   958,700 0 241,800
Domino's Pizza Inc. COM 25754A201 64,694 264,500 SH   SOLE   209,275 0 55,225
Elanco Animal Health Inco COM 28414H103 40,887 1,537,700 SH   SOLE   1,224,875 0 312,825
Elastic NV ORD SHS N14506104 53,406 648,600 SH   SOLE   551,500 0 97,100
EMCOR Group Inc COM 29084Q100 89,962 1,044,610 SH   SOLE   1,044,610 0 0
Encompass Health Corporat COM 29261A100 62,740 991,472 SH   SOLE   991,472 0 0
Entegris Inc. COM 29362U104 102,737 2,183,100 SH   SOLE   1,871,800 0 311,300
Envestnet Inc. COM 29404K106 87,392 1,541,300 SH   SOLE   1,541,300 0 0
ETSY Inc COM 29786A106 15,707 278,000 SH   SOLE   278,000 0 0
Evercore Partners Inc CL CLASS A 29977A105 26,361 329,100 SH   SOLE   329,100 0 0
Evo Payments Inc Class A CL A COM 26927E104 66,264 2,356,470 SH   SOLE   2,356,470 0 0
Exela Technologies Inc COM 30162V102 3,428 2,904,994 SH   SOLE   2,904,994 0 0
Exlservice Holdings Inc COM 302081104 59,175 883,730 SH   SOLE   883,730 0 0
Exponent Inc. COM 30214U102 49,634 710,070 SH   SOLE   710,070 0 0
Facebook Inc CL A 30303M102 12,663 71,110 SH   SOLE   67,990 0 3,120
Five Below Inc COM 33829M101 69,015 547,300 SH   SOLE   467,100 0 80,200
Fleetcor Technologies Inc COM 339041105 120,339 419,620 SH   SOLE   337,325 0 82,295
Floor & Decor Holdings In CL A 339750101 30,548 597,225 SH   SOLE   597,225 0 0
Focus Financial Partners COM CL A 34417P100 56,717 2,383,080 SH   SOLE   2,383,080 0 0
Gartner Inc COM 366651107 100,597 703,525 SH   SOLE   580,725 0 122,800
Genpact Ltd. SHS G3922B107 47,655 1,229,800 SH   SOLE   977,600 0 252,200
Global Payments Inc COM 37940X102 221,467 1,392,875 SH   SOLE   1,117,395 0 275,480
Grand Canyon Education In COM 38526M106 74,249 756,100 SH   SOLE   648,800 0 107,300
Greenlane Holdings Inc CL A 395330103 4,519 1,333,000 SH   SOLE   1,333,000 0 0
Hamilton Lane Inc Class A CL A 407497106 63,615 1,116,830 SH   SOLE   1,116,830 0 0
Healthequity Inc COM 42226A107 36,153 632,655 SH   SOLE   632,655 0 0
Hexcel Corp. COM 428291108 92,721 1,128,960 SH   SOLE   968,505 0 160,455
Hilton Grand Vacations In COM 43283X105 54,926 1,716,427 SH   SOLE   1,716,427 0 0
Houlihan Lokey Inc CL A 441593100 41,175 912,968 SH   SOLE   912,968 0 0
Hudson Ltd CL A COM CL A G46408103 36,167 2,947,600 SH   SOLE   2,947,600 0 0
Huya Inc Sponsored ADR Cl ADS REP SHS A 44852D108 31,708 1,341,300 SH   SOLE   933,600 0 407,700
i3 Verticals Inc CL A COM CL A 46571Y107 25,293 1,257,100 SH   SOLE   1,257,100 0 0
IAC/InterActiveCorp. COM 44919P508 54,994 252,300 SH   SOLE   200,050 0 52,250
IHS Markit Ltd. SHS G47567105 71,715 1,072,300 SH   SOLE   851,525 0 220,775
Imax Corporation COM 45245E109 34,010 1,549,434 SH   SOLE   1,549,434 0 0
Immunomedics Inc. COM 452907108 11,837 892,660 SH   SOLE   892,660 0 0
Innovative Industrial Pro COM 45781V101 25,123 271,985 SH   SOLE   271,985 0 0
Inspire Medical Systems I COM 457730109 33,045 541,550 SH   SOLE   541,550 0 0
Instructure Inc COM 45781U103 44,554 1,150,073 SH   SOLE   1,150,073 0 0
Intercontinental Exchange COM 45866F104 4,891 53,005 SH   SOLE   50,690 0 2,315
Intuit Inc. COM 461202103 8,902 33,475 SH   SOLE   31,995 0 1,480
iRhythm Technologies Inc COM 450056106 51,753 698,325 SH   SOLE   698,325 0 0
iRobot Corp. COM 462726100 10,916 177,000 SH   SOLE   177,000 0 0
iShares MSCI India ETF MSCI INDIA ETF 46429B598 13 400 SH   SOLE   400 0 0
ITT Inc COM 45073V108 22,169 362,300 SH   SOLE   362,300 0 0
J2 Global Inc. COM 48123V102 103,851 1,143,480 SH   SOLE   1,143,480 0 0
Jack Henry and Associates COM 426281101 68,164 466,970 SH   SOLE   465,150 0 1,820
Kennedy-Wilson Holdings I COM 489398107 65,912 3,006,930 SH   SOLE   3,006,930 0 0
Knight Transportation Inc CL A 499049104 64,287 1,771,000 SH   SOLE   1,520,500 0 250,500
L3Harris Technologies Inc COM 502431109 65,263 312,800 SH   SOLE   248,000 0 64,800
Lam Research Corp. COM 512807108 84,794 366,900 SH   SOLE   290,925 0 75,975
Lamb Weston Holdings Inc COM 513272104 64,986 893,650 SH   SOLE   710,275 0 183,375
LHC Group COM 50187A107 65,943 580,690 SH   SOLE   580,690 0 0
Lincoln Electric Holdings COM 533900106 19,209 221,400 SH   SOLE   221,400 0 0
Littelfuse Inc. COM 537008104 55,754 314,445 SH   SOLE   314,445 0 0
Lululemon Athletica Inc COM 550021109 40,162 208,600 SH   SOLE   166,350 0 42,250
Martin Marietta Materials COM 573284106 69,484 253,500 SH   SOLE   201,275 0 52,225
Marvell Technology Group ORD G5876H105 98,019 3,925,465 SH   SOLE   3,270,615 0 654,850
Matador Resources Company COM 576485205 38,093 2,304,455 SH   SOLE   2,304,455 0 0
Medallia Inc COM 584021109 10,006 364,800 SH   SOLE   364,800 0 0
MGP Ingredients Inc. COM 55303J106 19,805 398,650 SH   SOLE   398,650 0 0
Microchip Technology Inc. COM 595017104 51,426 553,500 SH   SOLE   439,450 0 114,050
Microsoft Corp. COM 594918104 20,279 145,860 SH   SOLE   139,445 0 6,415
MKS Instruments Inc. COM 55306N104 84,406 914,670 SH   SOLE   914,670 0 0
Monolithic Power Systems COM 609839105 57,365 368,600 SH   SOLE   318,675 0 49,925
Monro Inc. COM 610236101 44,722 566,029 SH   SOLE   566,029 0 0
MorphoSys AG ADR SPONSORED ADS 617760202 34,890 1,270,100 SH   SOLE   1,270,100 0 0
National Storage Affiliat COM SHS BEN IN 637870106 24,363 730,095 SH   SOLE   730,095 0 0
National Vision Holdings COM 63845R107 77,930 3,237,640 SH   SOLE   3,237,640 0 0
New Relic Inc COM 64829B100 37,390 608,460 SH   SOLE   608,460 0 0
NICE Ltd SPONSORED ADR 653656108 11,022 76,650 SH   SOLE   76,650 0 0
NLight Inc COM 65487K100 15,575 994,600 SH   SOLE   994,600 0 0
Nordson Corporation COM 655663102 49,304 337,100 SH   SOLE   288,075 0 49,025
Novocure Ltd ORD SHS G6674U108 36,418 487,000 SH   SOLE   487,000 0 0
NuVasive Inc. COM 670704105 15,313 241,600 SH   SOLE   241,600 0 0
NVIDIA Corp. COM 67066G104 3,091 17,755 SH   SOLE   16,980 0 775
O'Reilly Automotive Inc COM 67103H107 95,282 239,095 SH   SOLE   189,695 0 49,400
Ollie s Bargain Outlet Ho COM 681116109 35,958 613,195 SH   SOLE   613,195 0 0
OneSpaWorld Holdings Limi COM P73684113 35,686 2,297,900 SH   SOLE   2,297,900 0 0
Parsons Corporation COM 70202L102 33,830 1,025,780 SH   SOLE   1,025,780 0 0
Patrick Industries Inc. COM 703343103 18,769 437,700 SH   SOLE   437,700 0 0
Paylocity Holding Corp COM 70438V106 144,219 1,477,960 SH   SOLE   1,474,580 0 3,380
Paypal Inc COM 70450Y103 8,235 79,495 SH   SOLE   76,025 0 3,470
Pegasystems Inc. COM 705573103 31,342 460,575 SH   SOLE   460,575 0 0
Performance Foods Group C COM 71377A103 38,823 843,800 SH   SOLE   843,800 0 0
Petiq Inc COM CL A 71639T106 32,478 1,191,400 SH   SOLE   1,191,400 0 0
Phreesia Inc COM 71944F106 29,435 1,214,300 SH   SOLE   1,214,300 0 0
Pinterest Inc Cl A CL A 72352L106 33,525 1,267,500 SH   SOLE   1,005,200 0 262,300
Planet Fitness Inc Cla CL A 72703H101 14,479 250,200 SH   SOLE   250,200 0 0
PluralSight Inc Cl A COM CL A 72941B106 62,513 3,722,118 SH   SOLE   3,715,488 0 6,630
Pool Corporation COM 73278L105 39,513 195,900 SH   SOLE   155,450 0 40,450
Priority Technology Holdi COM 74275G107 10,923 2,266,210 SH   SOLE   2,266,210 0 0
Progressive Corp. COM 743315103 237,314 3,072,020 SH   SOLE   2,452,905 0 619,115
Proto Labs Inc COM 743713109 71,420 699,507 SH   SOLE   699,507 0 0
Q2 Holdings Inc COM 74736L109 100,812 1,278,205 SH   SOLE   1,278,205 0 0
Qualcomm Inc COM 747525103 3,841 50,350 SH   SOLE   48,180 0 2,170
RBC Bearings Inc COM 75524B104 32,569 196,304 SH   SOLE   196,304 0 0
RealPage Inc COM 75606N109 72,205 1,148,670 SH   SOLE   1,148,670 0 0
Renaissancere Holdings Lt COM G7496G103 103,133 533,125 SH   SOLE   438,300 0 94,825
Repay Holdings Corp COM CL A 76029L100 31,203 2,340,840 SH   SOLE   2,340,840 0 0
Rexnord Holdings Inc COM 76169B102 55,423 2,048,900 SH   SOLE   2,048,900 0 0
Rockwell Automation Inc. COM 773903109 46,787 283,900 SH   SOLE   223,525 0 60,375
Rogers Corp. COM 775133101 46,386 339,300 SH   SOLE   339,300 0 0
Rosetta Stone Inc. COM 777780107 31,155 1,790,535 SH   SOLE   1,790,535 0 0
RPM International Inc COM 749685103 116,564 1,694,000 SH   SOLE   1,476,825 0 217,175
Ryanair Holdings plc - SP SPONSORED ADS 783513203 43,997 662,800 SH   SOLE   526,500 0 136,300
S S and C Technologies Ho COM 78467J100 45,320 878,800 SH   SOLE   697,700 0 181,100
SAGE Therapeutics Inc. COM 78667J108 80,035 570,500 SH   SOLE   488,250 0 82,250
SailPoint Technologies Ho COM 78781P105 34,525 1,847,270 SH   SOLE   1,847,270 0 0
Salesforce.com Inc. COM 79466L302 9,144 61,600 SH   SOLE   58,905 0 2,695
SBA Communications Corp CL A 78410G104 117,364 486,685 SH   SOLE   389,000 0 97,685
Scotts Miracle-Gro Co. CL A 810186106 17,309 170,000 SH   SOLE   170,000 0 0
Select Medical Holdings C COM 81619Q105 27,523 1,661,000 SH   SOLE   1,661,000 0 0
Shenandoah Telecommunicat COM 82312B106 38,377 1,207,950 SH   SOLE   1,207,950 0 0
Silk Road Medical Inc COM 82710M100 19,549 600,952 SH   SOLE   600,952 0 0
Six Flags Entertainment C COM 83001A102 38,407 756,200 SH   SOLE   600,025 0 156,175
Smartsheet Inc Class A COM CL A 83200N103 39,774 1,103,900 SH   SOLE   1,103,900 0 0
SmileDirectClub Inc Cl A CL A COM 83192H106 347 25,000 SH   SOLE   19,900 0 5,100
South Mountain Merger Cor UNIT 99/99/9999 838884203 5,250 500,000 SH   SOLE   500,000 0 0
Staar Surgical Co. COM PAR $0.01 852312305 25,723 997,800 SH   SOLE   997,800 0 0
STERIS Plc SHS USD G8473T100 38,535 266,700 SH   SOLE   211,650 0 55,050
Strategic Ed Inc COM 86272C103 84,879 624,665 SH   SOLE   624,665 0 0
SVB Financial Group COM 78486Q101 77,729 372,000 SH   SOLE   295,250 0 76,750
Talend SA ADR ADS 874224207 13,089 385,201 SH   SOLE   385,201 0 0
Tandem Diabetes Care Inc. COM NEW 875372203 73,108 1,239,535 SH   SOLE   1,235,385 0 4,150
The RealReal Inc COM 88339P101 21,466 960,020 SH   SOLE   960,020 0 0
The Walt Disney Company COM DISNEY 254687106 6,377 48,935 SH   SOLE   46,785 0 2,150
Tractor Supply Company COM 892356106 56,091 620,200 SH   SOLE   491,875 0 128,325
Transdigm Group Inc COM 893641100 42,466 81,560 SH   SOLE   65,035 0 16,525
Transunion COM 89400J107 199,147 2,455,275 SH   SOLE   2,135,565 0 319,710
Trinet Group Inc COM 896288107 111,164 1,787,490 SH   SOLE   1,787,490 0 0
Tufin Software Technologi SHS M8893U102 15,889 965,300 SH   SOLE   965,300 0 0
Tyler Technologies Inc. COM 902252105 115,277 439,150 SH   SOLE   395,500 0 43,650
Ulta Salon Cosmetics & Fr COM 90384S303 11,279 45,000 SH   SOLE   36,200 0 8,800
Under Armour Inc Class A CL A 904311107 10,469 525,000 SH   SOLE   525,000 0 0
VanEck Vectors India Smal INDIA SMALL CAP 92189F767 160 4,900 SH   SOLE   4,900 0 0
Verisk Analytics Inc. Cl COM 92345Y106 78,052 493,560 SH   SOLE   402,200 0 91,360
Vertex Pharmaceuticals In COM 92532F100 104,231 615,220 SH   SOLE   493,395 0 121,825
Viad Corp. COM NEW 92552R406 39,991 595,550 SH   SOLE   595,550 0 0
Visa Inc. COM CL A 92826C839 13,271 77,150 SH   SOLE   73,770 0 3,380
Waste Connections Inc. COM 94106B101 93,987 1,021,600 SH   SOLE   808,100 0 213,500
Wex Inc COM 96208T104 132,555 655,985 SH   SOLE   587,735 0 68,250
Willdan Group Inc. COM 96924N100 14,846 423,190 SH   SOLE   423,190 0 0
Williams Scotsman Corp COM 971375126 36,620 2,350,420 SH   SOLE   2,350,420 0 0
Wintrust Financial Corp. COM 97650W108 12,280 190,000 SH   SOLE   190,000 0 0
WisdomTree Investments In COM 97717P104 33,776 6,464,308 SH   SOLE   6,464,308 0 0
WNS Holdings Ltd ADR SPON ADR 92932M101 83,496 1,421,200 SH   SOLE   1,421,200 0 0
Woodward Inc. COM 980745103 22,892 212,300 SH   SOLE   212,300 0 0
Zebra Technologies Corp. CL A 989207105 41,881 202,940 SH   SOLE   161,515 0 41,425
Zendesk Inc. COM 98936J101 68,514 940,100 SH   SOLE   821,300 0 118,800
Zynga Inc CL A 98986T108 91,338 15,693,900 SH   SOLE   13,383,400 0 2,310,500