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
51job Inc SP ADR REP COM 316827104 11,127 248,754 SH   SOLE   166,847 0 81,907
Adtalem Global Education Inc COM 00737L103 66,426 1,750,347 SH   SOLE   1,671,777 0 78,570
Advanced Energy Industries Inc COM 007973100 26,846 415,000 SH   SOLE   415,000 0 0
Agilent Technologies Inc COM 00846U101 19,612 330,675 SH   SOLE   330,675 0 0
Agios Pharmaceuticals Inc COM 00847X104 39,562 768,942 SH   SOLE   724,844 0 44,098
Align Technology Inc COM 016255101 113,415 755,494 SH   SOLE   755,494 0 0
Alteryx Inc COM CL A 02156B103 9,898 507,079 SH   SOLE   437,808 0 69,271
AMERCO COM 023586100 17,281 47,208 SH   SOLE   47,208 0 0
AMN Healthcare Services Inc COM 001744101 36,242 928,097 SH   SOLE   870,936 0 57,161
Anika Therapeutics Inc COM 035255108 13,599 275,624 SH   SOLE   237,972 0 37,652
ANSYS Inc COM 03662Q105 83,305 684,623 SH   SOLE   684,623 0 0
Apptio Inc CL A 03835C108 7,779 448,329 SH   SOLE   387,084 0 61,245
Ares Capital Corp COM 04010L103 37,135 2,267,080 SH   SOLE   2,267,080 0 0
Aspen Technology Inc COM 045327103 10,867 196,658 SH   SOLE   169,793 0 26,865
Astronics Corp COM 046433108 10,150 333,128 SH   SOLE   287,620 0 45,508
Astronics Corp COM 046433207 1,463 47,848 SH   SOLE   41,408 0 6,440
Atrion Corp COM 049904105 13,960 21,700 SH   SOLE   18,800 0 2,900
Axalta Coating Systems Ltd COM G0750C108 5,629 175,701 SH   SOLE   175,701 0 0
Axon Enterprise Inc COM 05464C101 8,660 344,456 SH   SOLE   297,401 0 47,055
Barnes Group Inc COM 067806109 18,245 311,718 SH   SOLE   269,135 0 42,583
Bio-Techne Corp COM 09073M104 20,737 176,486 SH   SOLE   152,377 0 24,109
Bioverativ Inc COM 09075E100 35,443 589,054 SH   SOLE   589,054 0 0
Black Knight Financial Services Inc CL A 09214X100 34,539 843,434 SH   SOLE   843,434 0 0
Blackline Inc COM 09239B109 38,463 1,076,194 SH   SOLE   1,034,040 0 42,154
Boingo Wireless Inc COM 09739C102 25,044 1,674,054 SH   SOLE   1,674,054 0 0
BOK Financial Corp COM 05561Q201 20,955 249,073 SH   SOLE   249,073 0 0
Booz Allen Hamilton Holding Corp CL A 099502106 39,968 1,228,269 SH   SOLE   1,228,269 0 0
Bright Horizons Family Solutions Inc COM 109194100 55,991 725,182 SH   SOLE   695,818 0 29,364
Brink's Co/The COM 109696104 16,052 239,576 SH   SOLE   206,848 0 32,728
Broadridge Financial Solutions Inc COM 11133T103 22,296 295,079 SH   SOLE   295,079 0 0
Brunswick Corp/DE COM 117043109 53,192 847,957 SH   SOLE   805,144 0 42,813
Cadence Design Systems Inc COM 127387108 37,767 1,127,700 SH   SOLE   1,127,700 0 0
CAE Inc COM 124765108 52,511 3,045,206 SH   SOLE   2,790,201 0 255,005
Cambrex Corp COM 132011107 49,801 833,486 SH   SOLE   787,929 0 45,557
Camping World Holdings Inc CL A 13462K109 18,111 587,053 SH   SOLE   506,857 0 80,196
Carlisle Cos Inc COM 142339100 39,791 417,100 SH   SOLE   417,100 0 0
Carrizo Oil & Gas Inc COM 144577103 18,806 1,079,582 SH   SOLE   1,025,773 0 53,809
Cavco Industries Inc COM 149568107 33,994 262,196 SH   SOLE   248,424 0 13,772
CBOE Holdings Inc COM 12503M108 41,949 458,964 SH   SOLE   458,964 0 0
CDW Corp/DE COM 12514G108 67,414 1,078,107 SH   SOLE   1,078,107 0 0
Celanese Corp COM SER A 150870103 69,755 734,726 SH   SOLE   734,726 0 0
Celldex Therapeutics Inc COM 15117B103 21,061 8,526,619 SH   SOLE   8,184,138 0 342,481
China Lodging Group Ltd SPON ADR 16949N109 1,130 14,000 SH   SOLE   14,000 0 0
Cimarex Energy Co COM 171798101 15,106 160,680 SH   SOLE   160,680 0 0
Cintas Corp COM 172908105 50,885 403,721 SH   SOLE   403,721 0 0
Colliers International Group Inc SUB VTG SHS 194693107 10,404 184,310 SH   SOLE   159,132 0 25,178
Cooper-Standard Holdings Inc COM 21676P103 56,556 560,679 SH   SOLE   545,803 0 14,876
Copart Inc COM 217204106 55,306 1,739,723 SH   SOLE   1,656,185 0 83,538
Core Laboratories NV COM N22717107 8,603 84,952 SH   SOLE   73,347 0 11,605
CoreCivic Inc COM 21871N101 57,659 2,090,618 SH   SOLE   2,019,145 0 71,473
CoreLogic Inc/United States COM 21871D103 29,406 677,872 SH   SOLE   647,543 0 30,329
CoStar Group Inc COM 22160N109 50,581 191,887 SH   SOLE   183,360 0 8,527
Credit Acceptance Corp COM 225310101 25,613 99,606 SH   SOLE   99,606 0 0
CyberArk Software Ltd SHS M2682V108 28,605 572,679 SH   SOLE   549,463 0 23,216
Dave & Buster's Entertainment Inc COM 238337109 38,908 585,000 SH   SOLE   585,000 0 0
DENTSPLY SIRONA Inc COM 24906P109 19,110 294,726 SH   SOLE   294,726 0 0
Diamondback Energy Inc COM 25278X109 26,510 298,502 SH   SOLE   298,502 0 0
Domino's Pizza Inc COM 25754A201 30,884 146,004 SH   SOLE   146,004 0 0
Dorman Products Inc COM 258278100 16,998 205,365 SH   SOLE   177,311 0 28,054
Dunkin' Brands Group Inc COM 265504100 27,412 497,307 SH   SOLE   497,307 0 0
Eaton Vance Corp COM NON VTG 278265103 55,272 1,168,053 SH   SOLE   1,168,053 0 0
Education Realty Trust Inc COM 28140H203 36,646 945,714 SH   SOLE   945,714 0 0
Endologix Inc COM 29266S106 25,488 5,244,360 SH   SOLE   5,089,661 0 154,699
Equity Commonwealth COM SH BEN INT 294628102 19,181 607,000 SH   SOLE   607,000 0 0
Equity LifeStyle Properties Inc COM 29472R108 20,681 239,532 SH   SOLE   239,532 0 0
ESCO Technologies Inc COM 296315104 8,941 149,895 SH   SOLE   129,418 0 20,477
Euronet Worldwide Inc COM 298736109 14,080 161,155 SH   SOLE   139,140 0 22,015
Evolent Health Inc CL A 30050B101 50,600 1,996,057 SH   SOLE   1,924,193 0 71,864
Exact Sciences Corp COM 30063P105 9,412 266,096 SH   SOLE   229,745 0 36,351
ExlService Holdings Inc COM 302081104 35,493 638,597 SH   SOLE   615,852 0 22,745
Expeditors International of Washington Inc COM 302130109 22,247 393,886 SH   SOLE   393,886 0 0
Extended Stay America Inc COM 30224P200 68,897 3,558,706 SH   SOLE   3,417,440 0 141,266
FactSet Research Systems Inc COM 303075105 23,322 140,341 SH   SOLE   140,341 0 0
Federal Realty Investment Trust SH BEN INT 313747206 19,237 152,204 SH   SOLE   152,204 0 0
First Busey Corp COM 319383204 15,744 536,981 SH   SOLE   463,625 0 73,356
FirstCash Inc COM 33767D105 25,704 440,898 SH   SOLE   406,229 0 34,669
Five Below Inc COM 33829M101 49,020 992,903 SH   SOLE   940,223 0 52,680
Gartner Inc COM 366651107 53,869 436,151 SH   SOLE   436,151 0 0
Genomic Health Inc COM 37244C101 46,722 1,435,395 SH   SOLE   1,400,358 0 35,037
Gentex Corp COM 371901109 54,448 2,870,201 SH   SOLE   2,814,344 0 55,857
GoDaddy Inc CL A 380237107 77,359 1,823,638 SH   SOLE   1,823,638 0 0
Graco Inc COM 384109104 22,825 208,865 SH   SOLE   208,865 0 0
Great Southern Bancorp Inc COM 390905107 8,987 167,988 SH   SOLE   145,040 0 22,948
Grupo Aeroportuario del Sureste SAB de CV SPON ADR SER B 40051E202 91,119 433,074 SH   SOLE   420,557 0 12,517
Guidewire Software Inc COM 40171V100 37,535 546,281 SH   SOLE   522,734 0 23,547
Haemonetics Corp COM 405024100 30,703 777,492 SH   SOLE   738,154 0 39,338
Hamilton Lane Inc CL A 407497106 9,312 423,468 SH   SOLE   365,619 0 57,849
Hanesbrands Inc COM 410345102 23,607 1,019,311 SH   SOLE   1,019,311 0 0
Healthcare Services Group Inc COM 421906108 9,071 193,698 SH   SOLE   167,238 0 26,460
HealthEquity Inc COM 42226A107 10,552 211,767 SH   SOLE   182,838 0 28,929
HealthSouth Corp COM 421924309 137,948 2,850,163 SH   SOLE   2,752,090 0 98,073
HEICO Corp CL A 422806208 54,400 876,718 SH   SOLE   844,547 0 32,171
Houlihan Lokey Inc CL A 441593100 11,661 334,112 SH   SOLE   288,470 0 45,642
ICF International Inc COM 44925C103 12,703 269,700 SH   SOLE   232,857 0 36,843
IDEXX Laboratories Inc COM 45168D104 18,738 116,083 SH   SOLE   116,083 0 0
Interactive Brokers Group Inc COM 45841N107 19,652 525,166 SH   SOLE   525,166 0 0
Intercept Pharmaceuticals Inc COM 45845P108 8,936 73,810 SH   SOLE   63,727 0 10,083
IPG Photonics Corp COM 44980X109 85,193 587,134 SH   SOLE   571,010 0 16,124
iRhythm Technologies Inc COM 450056106 49,257 1,159,267 SH   SOLE   1,103,358 0 55,909
iRobot Corp COM 462726100 36,057 428,538 SH   SOLE   413,604 0 14,934
j2 Global Inc COM 48123V102 21,496 252,628 SH   SOLE   218,117 0 34,511
JB Hunt Transport Services Inc COM 445658107 39,346 430,578 SH   SOLE   430,578 0 0
Jones Lang LaSalle Inc COM 48020Q107 53,248 425,981 SH   SOLE   425,981 0 0
Kite Pharma Inc COM 49803L109 38,177 368,254 SH   SOLE   354,681 0 13,573
Knoll Inc COM 498904200 7,315 364,823 SH   SOLE   314,984 0 49,839
Lakeland Financial Corp COM 511656100 22,866 498,380 SH   SOLE   430,297 0 68,083
Lamar Advertising Co CL A 512816109 38,108 517,980 SH   SOLE   517,980 0 0
Laureate Education Inc CL A 518613203 15,781 900,240 SH   SOLE   777,260 0 122,980
Lazard Ltd SHS A G54050102 44,936 969,906 SH   SOLE   969,906 0 0
LCI Industries COM 50189K103 75,638 738,653 SH   SOLE   694,605 0 44,048
LegacyTexas Financial Group Inc COM 52471Y106 22,741 596,414 SH   SOLE   514,939 0 81,475
Leggett & Platt Inc COM 524660107 23,952 455,960 SH   SOLE   455,960 0 0
LeMaitre Vascular Inc COM 525558201 8,455 270,834 SH   SOLE   234,261 0 36,573
Liberty Global PLC SHS CL A G5480U104 15,697 488,686 SH   SOLE   488,686 0 0
Ligand Pharmaceuticals Inc COM 53220K504 35,332 291,037 SH   SOLE   280,855 0 10,182
LivaNova PLC SHS G5509L101 122,586 2,002,719 SH   SOLE   1,921,106 0 81,613
LKQ Corp COM 501889208 36,687 1,113,415 SH   SOLE   1,113,415 0 0
LogMeIn Inc COM 54142L109 11,424 109,322 SH   SOLE   94,388 0 14,934
Manhattan Associates Inc COM 562750109 42,624 886,895 SH   SOLE   865,056 0 21,839
ManpowerGroup Inc COM 56418H100 45,289 405,631 SH   SOLE   405,631 0 0
MarketAxess Holdings Inc COM 57060D108 24,136 120,021 SH   SOLE   120,021 0 0
Masimo Corp COM 574795100 65,885 722,577 SH   SOLE   699,236 0 23,341
MAXIMUS Inc COM 577933104 53,821 859,350 SH   SOLE   792,855 0 66,495
MB Financial Inc COM 55264U108 37,436 850,046 SH   SOLE   806,956 0 43,090
Medidata Solutions Inc COM 58471A105 36,470 466,365 SH   SOLE   444,191 0 22,174
Mettler-Toledo International Inc COM 592688105 24,863 42,245 SH   SOLE   42,245 0 0
Middleby Corp/The COM 596278101 33,799 278,160 SH   SOLE   278,160 0 0
Mimecast Ltd ORD SHS G14838109 13,726 512,554 SH   SOLE   442,535 0 70,019
MINDBODY Inc COM 60255W105 11,842 435,359 SH   SOLE   375,886 0 59,473
Monolithic Power Systems Inc COM 609839105 35,595 369,246 SH   SOLE   346,224 0 23,022
Monro Muffler Brake Inc COM 610236101 23,854 571,364 SH   SOLE   548,599 0 22,765
Nasdaq Inc COM 631103108 24,017 335,947 SH   SOLE   335,947 0 0
Natus Medical Inc COM 639050103 63,313 1,697,388 SH   SOLE   1,649,832 0 47,556
Navigant Consulting Inc COM 63935N107 4,595 232,545 SH   SOLE   232,545 0 0
NetEase Inc SPON ADR 64110W102 4,690 15,600 SH   SOLE   15,600 0 0
Netshoes Cayman Ltd COM G6455x107 10,670 560,681 SH   SOLE   353,164 0 207,517
New Oriental Education & Technology Group Inc SPON ADR 647581107 63,830 905,512 SH   SOLE   905,512 0 0
NIC Inc COM 62914B100 40,056 2,113,760 SH   SOLE   1,982,319 0 131,441
Nordson Corp COM 655663102 44,713 368,555 SH   SOLE   360,046 0 8,509
Nutanix Inc CL A 67059N108 39,562 1,963,381 SH   SOLE   1,872,679 0 90,702
NVR Inc COM 62944T105 56,939 23,620 SH   SOLE   23,620 0 0
Oceaneering International Inc COM 675232102 23,697 1,037,501 SH   SOLE   996,177 0 41,324
Old Dominion Freight Line Inc COM 679580100 37,578 394,560 SH   SOLE   394,560 0 0
OM Asset Management Plc SHS G67506108 25,325 1,704,215 SH   SOLE   1,471,405 0 232,810
OraSure Technologies Inc COM 68554V108 11,390 659,911 SH   SOLE   569,762 0 90,149
Oshkosh Corp COM 688239201 81,884 1,188,787 SH   SOLE   1,173,484 0 15,303
Papa John's International Inc COM 698813102 55,289 770,467 SH   SOLE   740,830 0 29,637
PDC Energy Inc COM 69327R101 6,184 143,457 SH   SOLE   123,860 0 19,597
Polaris Industries Inc COM 731068102 39,019 423,061 SH   SOLE   401,871 0 21,190
Pool Corp COM 73278L105 57,759 491,271 SH   SOLE   473,852 0 17,419
PRA Health Sciences Inc COM 69354M108 77,953 1,039,239 SH   SOLE   1,039,239 0 0
Q2 Holdings Inc COM 74736L109 36,321 982,976 SH   SOLE   937,010 0 45,966
Qualys Inc COM 74758T303 62,276 1,526,361 SH   SOLE   1,452,422 0 73,939
Quotient Technology Inc COM 749119103 24,187 2,103,248 SH   SOLE   2,103,248 0 0
Raymond James Financial Inc COM 754730109 60,723 756,951 SH   SOLE   756,951 0 0
ResMed Inc COM 761152107 36,895 473,808 SH   SOLE   473,808 0 0
REV Group Inc COM 749527107 28,015 1,012,089 SH   SOLE   967,768 0 44,321
Robert Half International Inc COM 770323103 19,116 398,836 SH   SOLE   398,836 0 0
RPC Inc COM 749660106 33,480 1,656,581 SH   SOLE   1,656,581 0 0
Sandy Spring Bancorp Inc COM 800363103 8,182 201,222 SH   SOLE   173,732 0 27,490
SBA Communications Corp CL A 78410G104 20,402 151,235 SH   SOLE   151,235 0 0
Scotts Miracle-Gro Co/The CL A 810186106 10,810 120,841 SH   SOLE   104,333 0 16,508
Seattle Genetics Inc COM 812578102 21,420 413,994 SH   SOLE   413,994 0 0
Silicon Motion Technology Corp SPON ADR 82706C108 61,819 1,281,744 SH   SOLE   1,181,970 0 99,774
Snap-on Inc COM 833034101 61,229 387,526 SH   SOLE   387,526 0 0
Spectrum Brands Holdings Inc COM 84763R101 26,234 209,802 SH   SOLE   209,802 0 0
SPS Commerce Inc COM 78463M107 43,510 682,404 SH   SOLE   664,524 0 17,880
SVB Financial Group COM 78486Q101 33,102 188,307 SH   SOLE   188,307 0 0
Synopsys Inc COM 871607107 39,503 541,651 SH   SOLE   541,651 0 0
Tahoe Resources Inc COM 873868103 37,228 4,317,884 SH   SOLE   4,054,688 0 263,196
Tenneco Inc COM 880349105 55,787 964,665 SH   SOLE   936,124 0 28,541
Texas Roadhouse Inc COM 882681109 64,500 1,265,939 SH   SOLE   1,200,319 0 65,620
Toro Co/The COM 891092108 68,075 982,458 SH   SOLE   938,213 0 44,245
Tractor Supply Co COM 892356106 27,692 510,828 SH   SOLE   510,828 0 0
TransUnion COM 89400J107 52,631 1,215,207 SH   SOLE   1,215,207 0 0
TriCo Bancshares COM 896095106 8,977 255,384 SH   SOLE   220,497 0 34,887
Tyler Technologies Inc COM 902252105 10,458 59,532 SH   SOLE   51,400 0 8,132
Ulta Beauty Inc COM 90384S303 19,765 68,787 SH   SOLE   68,787 0 0
Ultimate Software Group Inc/The COM 90385D107 42,915 204,301 SH   SOLE   204,301 0 0
Ultragenyx Pharmaceutical Inc COM 90400D108 84,745 1,364,434 SH   SOLE   1,280,094 0 84,340
UMH Properties Inc COM 903002103 8,485 497,635 SH   SOLE   429,654 0 67,981
UniFirst Corp/MA COM 904708104 56,083 398,602 SH   SOLE   380,371 0 18,231
US Foods Holding Corp COM 912008109 23,076 847,744 SH   SOLE   847,744 0 0
Vail Resorts Inc COM 91879Q109 61,543 303,421 SH   SOLE   297,861 0 5,560
Vantiv Inc CL A 92210H105 23,777 375,392 SH   SOLE   375,392 0 0
Varex Imaging Corp COM 92214X106 43,013 1,272,569 SH   SOLE   1,272,569 0 0
Varian Medical Systems Inc COM 92220P105 20,323 196,943 SH   SOLE   196,943 0 0
Veeva Systems Inc CL A COM 922475108 20,461 333,727 SH   SOLE   333,727 0 0
VeriSign Inc COM 92343E102 39,822 428,377 SH   SOLE   428,377 0 0
Vermilion Energy Inc COM 923725105 32,846 1,035,293 SH   SOLE   926,773 0 108,520
WABCO Holdings Inc COM 92927K102 37,023 290,356 SH   SOLE   290,356 0 0
Wabtec Corp/DE COM 929740108 58,152 635,544 SH   SOLE   635,544 0 0
WageWorks Inc COM 930427109 58,412 869,227 SH   SOLE   832,323 0 36,904
Watsco Inc COM 942622200 58,433 378,944 SH   SOLE   371,507 0 7,437
Wayfair Inc CL A 94419L101 54,989 715,253 SH   SOLE   684,819 0 30,434
WD-40 Co COM 929236107 37,613 340,854 SH   SOLE   323,527 0 17,327
West Pharmaceutical Services Inc COM 955306105 45,516 481,547 SH   SOLE   468,256 0 13,291
Wingstop Inc COM 974155103 8,038 260,133 SH   SOLE   224,596 0 35,537
WNS Holdings Ltd SPON ADR 92932M101 24,734 719,862 SH   SOLE   621,523 0 98,339
Zayo Group Holdings Inc COM 98919V105 18,710 605,501 SH   SOLE   605,501 0 0