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
21VIANET GROUP INC. SPONSORED ADS A 90138A103 9,751 408,659 SH   SOLE   189,385 0 219,274
ACUSHNET HOLDINGS CORP. COM 005098108 81,721 2,348,979 SH   SOLE   1,061,914 0 1,287,065
AMBARELLA INC. SHS G037AX101 44,035 961,467 SH   SOLE   431,541 0 529,926
AMERICAN RENAL ASSOCIATES HOLDINGS COM 029227105 18,810 2,884,963 SH   SOLE   1,294,424 0 1,590,539
BANK OZK COM 06417N103 62,514 2,663,580 SH   SOLE   1,221,837 0 1,441,743
BLUCORA, INC. COM 095229100 36,420 3,189,106 SH   SOLE   1,461,300 0 1,727,806
BOK FINANCIAL CORPORATION COM NEW 05561Q201 1,024 18,145 SH   SOLE   18,145 0 0
BRUNSWICK CORP. COM 117043109 90,745 1,417,662 SH   SOLE   645,589 0 772,073
CARDTRONICS PLC. SHS CL A G1991C105 71,896 2,998,166 SH   SOLE   1,359,879 0 1,638,287
CBOE GLOBAL MARKETS INC. COM 12503M108 62,057 665,276 SH   SOLE   307,185 0 358,091
CHARLES RIVER LABORATORIES COM 159864107 115,743 663,855 SH   SOLE   303,151 0 360,704
CHEMED CORP. COM 16359R103 83,924 186,055 SH   SOLE   84,951 0 101,104
CHINA DISTANCE EDUCATION HOLDINGS SPONS ADR 16944W104 2,975 344,670 SH   SOLE   159,673 0 184,997
COLLIERS INTERNATIONAL GROUP INC. SUB VTG SHS 194693107 37,005 647,369 SH   SOLE   469,600 0 177,769
ENVESTNET, INC. COM 29404K106 109,807 1,493,158 SH   SOLE   682,225 0 810,933
EURONET WORLDWIDE INC. COM 298736109 80,369 838,746 SH   SOLE   383,020 0 455,726
FEDERAL SIGNAL CORP COM 313855108 38,583 1,297,766 SH   SOLE   598,881 0 698,885
FIRSTSERVICE CORP. COM 33767E202 28,497 283,986 SH   SOLE   205,969 0 78,017
FOX FACTORY HOLDING CORP. COM 35138V102 77,542 938,646 SH   SOLE   426,391 0 512,255
GENTHERM INC. COM 37253A103 64,884 1,667,961 SH   SOLE   758,869 0 909,092
GLOBUS MEDICAL INC. CL A 379577208 75,967 1,592,264 SH   SOLE   731,820 0 860,444
GRAND CANYON EDUCATION INC. COM 38526M106 139,264 1,538,322 SH   SOLE   705,288 0 833,034
HEALTHCARE SERVICES GROUP INC. COM 421906108 78,351 3,203,212 SH   SOLE   1,460,154 0 1,743,058
HMS HOLDINGS CORP. COM 40425J101 112,313 3,467,510 SH   SOLE   1,579,086 0 1,888,424
HOULIHAN LOKEY INC. CL A 441593100 114,317 2,054,580 SH   SOLE   938,525 0 1,116,055
HURON CONSULTING GROUP INC. COM 447462102 84,861 1,917,765 SH   SOLE   873,300 0 1,044,465
INTERNATIONAL FCSTONE INC. COM 46116V105 106,769 1,941,258 SH   SOLE   885,235 0 1,056,023
IPG PHOTONICS CORP. COM 44980X109 1,476 9,200 SH   SOLE   9,200 0 0
IRIDIUM COMMUNICATIONS INC. COM 46269C102 119,368 4,692,155 SH   SOLE   2,138,863 0 2,553,292
KULICKE & SOFFA INDUSTRIES COM 501242101 3,947 189,469 SH   SOLE   87,830 0 101,639
LANDSTAR SYSTEM INC COM 515098101 72,424 644,862 SH   SOLE   289,289 0 355,573
LAUREATE EDUCATION, INC. CL A 518613203 84,901 8,515,668 SH   SOLE   3,872,802 0 4,642,866
MARKETAXESS HOLDINGS INC. COM 57060D108 141,774 283,028 SH   SOLE   129,818 0 153,210
MARRIOTT VACATIONS WORLDWIDE CORP. COM 57164Y107 80,078 974,071 SH   SOLE   443,977 0 530,094
MAXIMUS, INC. COM 577933104 106,294 1,508,787 SH   SOLE   688,188 0 820,599
NEW ORIENTAL EDUCATION & TECHNOLOGY SPON ADR 647581107 3,780 29,027 SH   SOLE   13,474 0 15,553
ORMAT TECHNOLOGIES INC. COM 686688102 82,023 1,291,898 SH   SOLE   579,409 0 712,489
PREMIER INC. CL A 74051N102 531 15,498 SH   SOLE   15,498 0 0
PRIMORIS SERVICES CORP. COM 74164F103 66,172 3,725,886 SH   SOLE   1,680,363 0 2,045,523
QUALYS INC COM 74758T303 36,098 347,025 SH   SOLE   160,323 0 186,702
RE/MAX HOLDINGS INC. CL A 75524W108 56,279 1,790,603 SH   SOLE   810,860 0 979,743
REV GROUP INC COM 749527107 29,329 4,808,068 SH   SOLE   2,155,745 0 2,652,323
RLI CORP. COM 749607107 88,620 1,079,411 SH   SOLE   492,936 0 586,475
SHUTTERSTOCK INC. COM 825690100 65,258 1,866,117 SH   SOLE   836,837 0 1,029,280
SILICON LABORATORIES INC. COM 826919102 83,935 837,093 SH   SOLE   382,744 0 454,349
STANTEC INC. COM 85472N109 14,184 461,234 SH   SOLE   334,761 0 126,473
TAKE-TWO INTERACTIVE SOFTWARE COM 874054109 1,710 12,252 SH   SOLE   12,252 0 0
TEMPUR SEALY INTERNATIONAL INC. COM 88023U101 77,699 1,079,909 SH   SOLE   484,323 0 595,586
THERMON GROUP HOLDINGS INC COM 88362T103 47,612 3,267,821 SH   SOLE   1,504,253 0 1,763,568
THOR INDUSTRIES INC. COM 885160101 84,276 791,104 SH   SOLE   360,750 0 430,354
TRACTOR SUPPLY COMPANY COM 892356106 1,636 12,413 SH   SOLE   12,413 0 0
TRIP.COM GROUP LTD ADS 89677Q107 3,953 152,519 SH   SOLE   70,650 0 81,869
TUCOWS INC. COM NEW 898697206 16,921 294,622 SH   SOLE   213,914 0 80,708
UNIVERSAL HEALTH SERVICES CL B 913903100 40,577 436,824 SH   SOLE   202,954 0 233,870
VICTORY CAP HLDGS INC COM CL A COM CL A 92645B103 1,044 60,749 SH   SOLE   60,749 0 0
VIPSHOP HOLDINGS LIMITED SPONSORED ADS A 92763W103 6,802 341,652 SH   SOLE   158,291 0 183,361
VIRTU FINANCIAL CL A 928254101 137,530 5,827,526 SH   SOLE   2,654,140 0 3,173,386
WADDELL AND REED FINANCIAL, INC. CL A 930059100 24,936 1,607,731 SH   SOLE   721,227 0 886,504
YUM CHINA HOLDINGS INC COM 98850P109 1,769 36,800 SH   SOLE   17,100 0 19,700