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 316827104 16,720 503,009 SH   SOLE   473,000 0 30,009
Abaxis Inc COM 002567105 43,656 848,025 SH   SOLE   785,025 0 63,000
Agios Pharmaceuticals Inc COM 00847X104 52,970 476,604 SH   SOLE   439,604 0 37,000
Airgas Inc COM 009363102 117,582 1,111,571 SH   SOLE   1,081,571 0 30,000
Akorn Inc COM 009728106 149,436 3,422,713 SH   SOLE   3,176,646 0 246,067
Alamos Gold Inc COM 011527108 19,429 3,432,436 SH   SOLE   3,432,436 0 0
Align Technology Inc COM 016255101 54,437 868,077 SH   SOLE   804,370 0 63,707
Allegion PLC ORD SHS G0176J109 39,332 654,008 SH   SOLE   617,008 0 37,000
Allied World Assurance Co Hold SHS H01531104 52,905 1,224,075 SH   SOLE   1,122,075 0 102,000
Allscripts Healthcare Solution COM 01988P108 41,081 3,003,023 SH   SOLE   2,693,023 0 310,000
Amber Road Inc COM 02318Y109 11,687 1,664,753 SH   SOLE   1,466,529 0 198,224
AMERCO COM 023586100 65,862 201,469 SH   SOLE   186,469 0 15,000
AMETEK Inc COM 031100100 406,580 7,422,046 SH   SOLE   6,950,046 0 472,000
Amphenol Corp COM 032095101 239,051 4,123,696 SH   SOLE   3,897,696 0 226,000
Anadarko Petroleum Corp COM 032511107 2,264 29,000 SH   SOLE   29,000 0 0
ANSYS Inc COM 03662Q105 211,049 2,313,120 SH   SOLE   2,160,220 0 152,900
Arctic Cat Inc COM 039670104 7,678 231,185 SH   SOLE   205,650 0 25,535
Associated Banc-Corp COM 045487105 237,428 11,713,299 SH   SOLE   10,836,299 0 877,000
Atmel Corp COM 049513104 50,024 5,076,039 SH   SOLE   4,888,039 0 188,000
Audience Inc COM 05070J102 7,332 1,499,323 SH   SOLE   1,322,545 0 176,778
Avis Budget Group Inc COM 053774105 118,244 2,682,486 SH   SOLE   2,567,486 0 115,000
Avnet Inc COM 053807103 50,305 1,223,658 SH   SOLE   1,165,658 0 58,000
Bankrate Inc COM 06647F102 110,670 10,550,053 SH   SOLE   9,927,053 0 623,000
Baytex Energy Corp COM 07317Q105 25,860 1,662,372 SH   SOLE   1,480,067 0 182,305
Belden Inc COM 077454106 51,411 632,902 SH   SOLE   571,902 0 61,000
Berkshire Hills Bancorp Inc COM 084680107 162 5,700 SH   SOLE   5,700 0 0
Bio-Techne Corp COM 09073M104 141,486 1,436,847 SH   SOLE   1,347,847 0 89,000
Bitauto Holdings Ltd ADS 091727107 39,956 782,689 SH   SOLE   735,040 0 47,649
Blackhawk Network Holdings Inc CL A 09238E104 85,155 2,066,863 SH   SOLE   1,909,063 0 157,800
Blue Nile Inc COM 09578R103 5,561 183,000 SH   SOLE   162,000 0 21,000
Boingo Wireless Inc COM 09739C102 38,052 4,606,819 SH   SOLE   4,025,819 0 581,000
BOK Financial Corp COM 05561Q201 131,034 1,883,211 SH   SOLE   1,813,711 0 69,500
Cadence Design Systems Inc COM 127387108 97,791 4,974,092 SH   SOLE   4,650,092 0 324,000
CAE Inc COM 124765108 44,493 3,737,300 SH   SOLE   3,456,267 0 281,033
Caesarstone Sdot-Yam Ltd SHS M20598104 126,906 1,851,564 SH   SOLE   1,685,899 0 165,665
CAI International Inc COM 12477X106 40,213 1,953,018 SH   SOLE   1,697,346 0 255,672
CalAmp Corp COM 128126109 24,275 1,329,383 SH   SOLE   1,329,383 0 0
Carrizo Oil & Gas Inc COM 144577103 72,894 1,480,384 SH   SOLE   1,375,384 0 105,000
Casey's General Stores Inc COM 147528103 81,605 852,362 SH   SOLE   769,210 0 83,152
Cavco Industries Inc COM 149568107 64,336 852,816 SH   SOLE   764,816 0 88,000
Celldex Therapeutics Inc COM 15117B103 65,363 2,591,703 SH   SOLE   2,406,303 0 185,400
Cepheid COM 15670R107 341,362 5,582,372 SH   SOLE   5,225,672 0 356,700
Chefs' Warehouse Inc/The COM 163086101 25,345 1,193,276 SH   SOLE   1,090,276 0 103,000
Choice Hotels International In COM 169905106 52,629 970,125 SH   SOLE   885,275 0 84,850
Cimarex Energy Co COM 171798101 94,037 852,482 SH   SOLE   788,497 0 63,985
Clayton Williams Energy Inc COM 969490101 25,697 390,830 SH   SOLE   390,830 0 0
CNO Financial Group Inc COM 12621E103 129,954 7,081,991 SH   SOLE   6,735,991 0 346,000
Cogent Communications Holdings COM 19239V302 28,772 850,247 SH   SOLE   799,247 0 51,000
Core Laboratories NV COM N22717107 86,072 754,750 SH   SOLE   712,385 0 42,365
CoreLogic Inc/United States COM 21871D103 42,865 1,080,000 SH   SOLE   1,018,000 0 62,000
Crown Castle International Cor COM 22822V101 77,128 960,504 SH   SOLE   960,504 0 0
Cvent Inc COM 23247G109 7,402 287,115 SH   SOLE   263,329 0 23,786
Demandware Inc COM 24802Y105 34,511 485,519 SH   SOLE   357,519 0 128,000
Discovery Communications Inc COM C 25470F302 13,871 446,289 SH   SOLE   408,450 0 37,839
Domino's Pizza Inc COM 25754A201 52,980 467,199 SH   SOLE   430,199 0 37,000
Donaldson Co Inc COM 257651109 417,403 11,659,304 SH   SOLE   10,906,404 0 752,900
Dorman Products Inc COM 258278100 69,837 1,465,319 SH   SOLE   1,343,640 0 121,679
Drew Industries Inc COM 26168L205 134,752 2,322,515 SH   SOLE   2,150,515 0 172,000
Dun & Bradstreet Corp/The COM 26483E100 30,744 252,000 SH   SOLE   228,000 0 24,000
Dunkin' Brands Group Inc COM 265504100 33,825 615,000 SH   SOLE   583,000 0 32,000
Eaton Vance Corp COM 278265103 147,056 3,758,143 SH   SOLE   3,510,052 0 248,091
Education Realty Trust Inc COM 28140H203 104,772 3,340,943 SH   SOLE   3,153,611 0 187,332
Energen Corp COM 29265N108 39,917 584,439 SH   SOLE   529,439 0 55,000
Envision Healthcare Holdings I COM 29413U103 57,611 1,459,238 SH   SOLE   1,381,238 0 78,000
ESCO Technologies Inc COM 296315104 80,791 2,159,603 SH   SOLE   2,002,903 0 156,700
Eversource Energy COM 30040W108 47,083 1,036,839 SH   SOLE   1,036,839 0 0
ExlService Holdings Inc COM 302081104 90,984 2,631,105 SH   SOLE   2,324,105 0 307,000
Expeditors International of Wa COM 302130109 98,772 2,142,335 SH   SOLE   2,039,335 0 103,000
Extra Space Storage Inc COM 30225T102 145,921 2,237,360 SH   SOLE   2,152,360 0 85,000
F5 Networks Inc COM 315616102 85,034 706,553 SH   SOLE   676,553 0 30,000
Federal Realty Investment Trus SH BEN 313747206 87,443 682,669 SH   SOLE   663,669 0 19,000
Fiesta Restaurant Group Inc COM 31660B101 62,443 1,248,858 SH   SOLE   1,119,858 0 129,000
First Busey Corp COM 319383105 42,130 6,412,410 SH   SOLE   6,092,410 0 320,000
First Commonwealth Financial C COM 319829107 5,576 581,445 SH   SOLE   581,445 0 0
FLIR Systems Inc COM 302445101 57,354 1,860,921 SH   SOLE   1,693,921 0 167,000
Forward Air Corp COM 349853101 79,545 1,522,107 SH   SOLE   1,403,107 0 119,000
Fossil Group Inc COM 34988V106 88,929 1,282,134 SH   SOLE   1,197,134 0 85,000
Fresh Market Inc/The COM 35804H106 150,273 4,675,582 SH   SOLE   4,396,682 0 278,900
Gaiam Inc CL A 36268Q103 15,760 2,409,806 SH   SOLE   2,409,806 0 0
Generac Holdings Inc COM 368736104 148,985 3,748,043 SH   SOLE   3,523,043 0 225,000
Genesee & Wyoming Inc CL A 371559105 30,548 401,000 SH   SOLE   384,000 0 17,000
Genpact Ltd SHS G3992B107 33,970 1,592,583 SH   SOLE   1,444,583 0 148,000
Gentex Corp/MI COM 371901109 113,432 6,908,139 SH   SOLE   6,522,139 0 386,000
Global Eagle Entertainment Inc COM 37951D102 23,552 1,808,895 SH   SOLE   1,808,895 0 0
Global Payments Inc COM 37940X102 110,135 1,064,625 SH   SOLE   1,064,625 0 0
Globalstar Inc COM 378973408 77,557 36,756,705 SH   SOLE   34,864,954 0 1,891,751
Gogo Inc COM 38046C109 72,699 3,392,407 SH   SOLE   2,996,067 0 396,340
Goldcorp Inc COM 380956409 4,520 279,000 SH   SOLE   279,000 0 0
Graham Corp COM 384556106 2,512 122,612 SH   SOLE   122,612 0 0
Grupo Aeroportuario del Surest ADR 40051E202 54,062 381,064 SH   SOLE   355,355 0 25,709
GTT Communications Inc COM 362393100 59,725 2,502,088 SH   SOLE   2,502,088 0 0
Guaranty Bancorp COM 40075T607 4,440 268,921 SH   SOLE   268,921 0 0
Gulfport Energy Corp COM 402635304 47,897 1,189,993 SH   SOLE   1,145,793 0 44,200
Hackett Group Inc/The COM 404609109 48,774 3,631,743 SH   SOLE   3,328,743 0 303,000
Hancock Holding Co COM 410120109 62,113 1,946,493 SH   SOLE   1,798,306 0 148,187
HealthSouth Corp COM 421924309 96,299 2,090,729 SH   SOLE   1,939,729 0 151,000
Heartland Express Inc COM 422347104 69,734 3,447,044 SH   SOLE   3,107,044 0 340,000
HEICO Corp CL A 422806208 235,884 4,646,138 SH   SOLE   4,295,988 0 350,150
Henry Schein Inc COM 806407102 60,122 423,034 SH   SOLE   395,034 0 28,000
Hertz Global Holdings Inc COM 42805T105 70,831 3,908,980 SH   SOLE   3,646,980 0 262,000
HomeAway Inc COM 43739Q100 87,491 2,811,407 SH   SOLE   2,596,107 0 215,300
Hornbeck Offshore Services Inc COM 440543106 45,779 2,229,868 SH   SOLE   2,086,534 0 143,334
IMAX Corp COM 45245E109 37,441 929,759 SH   SOLE   871,759 0 58,000
inContact Inc COM 45336E109 30,156 3,055,317 SH   SOLE   2,857,464 0 197,853
Infinera Corp COM 45667G103 60,937 2,904,510 SH   SOLE   2,804,510 0 100,000
Intercept Pharmaceuticals Inc COM 45845P108 66,543 275,679 SH   SOLE   255,679 0 20,000
IPG Photonics Corp COM 44980X109 167,144 1,962,365 SH   SOLE   1,821,365 0 141,000
JB Hunt Transport Services Inc COM 445658107 50,133 610,706 SH   SOLE   585,706 0 25,000
Jones Lang LaSalle Inc COM 48020Q107 51,915 303,596 SH   SOLE   286,596 0 17,000
Kennametal Inc COM 489170100 59,298 1,737,928 SH   SOLE   1,623,428 0 114,500
Knoll Inc COM 498904200 87,027 3,476,910 SH   SOLE   3,223,910 0 253,000
Lakeland Financial Corp COM 511656100 41,989 968,166 SH   SOLE   754,366 0 213,800
Lamar Advertising Co COM 512816109 34,576 601,527 SH   SOLE   557,527 0 44,000
LegacyTexas Financial Group In COM 52471Y106 20,414 675,966 SH   SOLE   675,966 0 0
Leucadia National Corp COM 527288104 109,611 4,514,439 SH   SOLE   4,201,439 0 313,000
Liberty Global PLC SHS CL A G548OU104 35,793 661,980 SH   SOLE   661,980 0 0
Liberty Global PLC SHS CL C G548OU120 11,940 235,822 SH   SOLE   235,822 0 0
Liquidity Services Inc COM 53635B107 20,936 2,174,018 SH   SOLE   2,070,018 0 104,000
Littelfuse Inc COM 537008104 30,359 319,938 SH   SOLE   319,938 0 0
LKQ Corp COM 501889208 266,093 8,797,927 SH   SOLE   8,404,927 0 393,000
Lumber Liquidators Holdings In COM 55003T107 4,055 195,821 SH   SOLE   174,821 0 21,000
Lumos Networks Corp COM 550283105 9,306 629,200 SH   SOLE   559,732 0 69,468
Marlin Business Services Corp COM 571157106 14,085 834,448 SH   SOLE   560,247 0 274,201
MB Financial Inc COM 55264U108 96,182 2,792,748 SH   SOLE   2,710,748 0 82,000
McGrath RentCorp COM 580589109 50,559 1,661,471 SH   SOLE   1,515,471 0 146,000
Medidata Solutions Inc COM 58471A105 105,656 1,945,061 SH   SOLE   1,795,061 0 150,000
Melco Crown Entertainment Ltd ADR 585464100 26,482 1,349,056 SH   SOLE   1,226,000 0 123,056
Mettler-Toledo International I COM 592688105 296,223 867,518 SH   SOLE   804,518 0 63,000
Middleby Corp/The COM 596278101 117,026 1,042,731 SH   SOLE   971,731 0 71,000
Monolithic Power Systems Inc COM 609839105 32,019 631,407 SH   SOLE   599,407 0 32,000
Moog Inc CL A 615394202 142,995 2,023,132 SH   SOLE   1,886,932 0 136,200
Navigant Consulting Inc COM 63935N107 58,608 3,941,342 SH   SOLE   3,677,342 0 264,000
NetSuite Inc COM 64118Q107 74,841 815,705 SH   SOLE   758,705 0 57,000
Nordson Corp COM 655663102 282,815 3,630,956 SH   SOLE   3,385,356 0 245,600
NVR Inc COM 62944T105 111,555 83,250 SH   SOLE   77,950 0 5,300
Oshkosh Corp COM 688239201 104,136 2,457,193 SH   SOLE   2,294,193 0 163,000
Papa John's International Inc COM 698813102 102,286 1,352,807 SH   SOLE   1,219,807 0 133,000
Patriot National Inc COM 70338T102 21,676 1,354,766 SH   SOLE   945,342 0 409,424
PDC Energy Inc COM 69327R101 50,154 935,011 SH   SOLE   869,911 0 65,100
Performance Sports Group Ltd COM 71377G100 17,030 946,096 SH   SOLE   656,130 0 289,966
PGT Inc COM 69336V101 58,112 4,004,951 SH   SOLE   3,620,951 0 384,000
Phoenix New Media Ltd ADS 71910C103 3,675 464,000 SH   SOLE   464,000 0 0
Pool Corp COM 73278L105 132,399 1,886,558 SH   SOLE   1,749,558 0 137,000
Popeyes Louisiana Kitchen Inc COM 732872106 27,240 454,079 SH   SOLE   454,079 0 0
Post Properties Inc COM 737464107 92,565 1,702,497 SH   SOLE   1,592,497 0 110,000
Quanta Services Inc COM 74762E102 117,653 4,082,357 SH   SOLE   3,879,357 0 203,000
RCM Technologies Inc COM 749360400 2,870 507,000 SH   SOLE   507,000 0 0
RetailMeNot Inc COM 76132B106 42,862 2,403,905 SH   SOLE   2,262,905 0 141,000
RLI Corp COM 749607107 34,146 664,457 SH   SOLE   616,457 0 48,000
Robert Half International Inc COM 770323103 121,323 2,186,000 SH   SOLE   2,075,000 0 111,000
Rogers Corp COM 775133101 52,265 790,218 SH   SOLE   712,218 0 78,000
RPX Corp COM 74972G103 35,547 2,103,390 SH   SOLE   1,972,390 0 131,000
Rubicon Technology Inc COM 78112T107 7,705 3,170,799 SH   SOLE   3,170,799 0 0
Rush Enterprises Inc CL A 781846209 88,113 3,361,798 SH   SOLE   3,018,298 0 343,500
Rush Enterprises Inc CL B 781846308 17,335 722,278 SH   SOLE   635,678 0 86,600
Sandy Spring Bancorp Inc COM 800363103 40,082 1,432,538 SH   SOLE   1,380,390 0 52,148
Sanmina Corp COM 801056102 87,273 4,329,003 SH   SOLE   4,067,003 0 262,000
Sarepta Therapeutics Inc COM 803607100 107,499 3,532,677 SH   SOLE   3,237,677 0 295,000
SBA Communications Corp COM 78388J106 107,200 932,417 SH   SOLE   862,417 0 70,000
Seattle Genetics Inc COM 812578102 113,982 2,355,005 SH   SOLE   2,186,005 0 169,000
SEI Investments Co COM 784117103 410,421 8,370,811 SH   SOLE   7,959,957 0 410,854
Select Comfort Corp COM 81616X103 91,840 3,054,221 SH   SOLE   2,833,302 0 220,919
SilverCrest Mines Inc COM 828365106 3,388 3,412,300 SH   SOLE   3,412,300 0 0
Sirona Dental Systems Inc COM 82966C103 61,401 611,440 SH   SOLE   564,440 0 47,000
SM Energy Co COM 78454L100 43,643 946,288 SH   SOLE   884,288 0 62,000
Sociedad Quimica y Minera de C ADR B 833635105 17,668 1,102,849 SH   SOLE   1,007,000 0 95,849
Solera Holdings Inc COM 83421A104 122,406 2,746,983 SH   SOLE   2,531,983 0 215,000
SPS Commerce Inc COM 78463M107 101,446 1,541,729 SH   SOLE   1,401,347 0 140,382
SVB Financial Group COM 78486Q101 143,862 999,181 SH   SOLE   916,181 0 83,000
Tahoe Resources Inc COM 873868103 31,032 2,560,160 SH   SOLE   2,393,477 0 166,683
Tenneco Inc COM 880349105 25,436 442,825 SH   SOLE   416,825 0 26,000
Terreno Realty Corp COM 88146M101 46,073 2,338,751 SH   SOLE   2,178,751 0 160,000
Textainer Group Holdings Ltd SHS G8755E109 13,005 500,000 SH   SOLE   478,720 0 21,280
Textura Corp COM 883211104 61,469 2,208,728 SH   SOLE   2,031,186 0 177,542
Thermon Group Holdings Inc COM 88362T103 55,384 2,300,956 SH   SOLE   2,116,401 0 184,555
Toro Co/The COM 891092108 129,824 1,915,368 SH   SOLE   1,779,668 0 135,700
Towerstream Corp COM 892000100 6,758 3,775,680 SH   SOLE   3,775,680 0 0
Trimble Navigation Ltd COM 896239100 79,357 3,382,640 SH   SOLE   3,208,640 0 174,000
TrustCo Bank Corp NY COM 898349105 39,557 5,626,885 SH   SOLE   4,678,685 0 948,200
Ultimate Software Group Inc/Th COM 90385D107 116,228 707,239 SH   SOLE   664,239 0 43,000
Ultragenyx Pharmaceutical Inc COM 90400D108 238,996 2,334,173 SH   SOLE   2,186,373 0 147,800
United Natural Foods Inc COM 911163103 109,503 1,719,581 SH   SOLE   1,592,381 0 127,200
Urban Outfitters Inc COM 917047102 19,090 545,429 SH   SOLE   500,429 0 45,000
Vail Resorts Inc COM 91879Q109 130,479 1,194,862 SH   SOLE   1,141,662 0 53,200
VeriFone Systems Inc COM 92342Y109 38,377 1,130,059 SH   SOLE   1,026,059 0 104,000
Verint Systems Inc COM 92343X100 84,353 1,388,646 SH   SOLE   1,302,646 0 86,000
VeriSign Inc COM 92343E102 59,036 956,506 SH   SOLE   898,506 0 58,000
Verisk Analytics Inc COM 92345Y106 91,712 1,260,474 SH   SOLE   1,184,474 0 76,000
Virtusa Corp COM 92827P102 98,794 1,922,068 SH   SOLE   1,737,068 0 185,000
Vonage Holdings Corp COM 92886T201 99,330 20,230,160 SH   SOLE   18,758,160 0 1,472,000
VWR Corp COM 91843L103 80,038 2,994,299 SH   SOLE   2,803,799 0 190,500
WABCO Holdings Inc COM 92927K102 79,527 642,799 SH   SOLE   603,488 0 39,311
Wabtec Corp/DE COM 929740108 62,432 662,474 SH   SOLE   631,474 0 31,000
WESCO International Inc COM 95082P105 75,703 1,102,901 SH   SOLE   1,028,701 0 74,200
WEX Inc COM 96208T104 86,585 759,716 SH   SOLE   714,716 0 45,000
Williams-Sonoma Inc COM 969904101 58,165 706,999 SH   SOLE   604,999 0 102,000
WNS Holdings Ltd COM 92932M101 92,958 3,475,056 SH   SOLE   3,260,056 0 215,000
World Acceptance Corp COM 981419104 45,379 737,757 SH   SOLE   716,757 0 21,000
Wright Medical Group Inc COM 98235T107 66,297 2,524,644 SH   SOLE   2,331,744 0 192,900
WuXi PharmaTech Cayman Inc ADR 929352102 42,848 1,013,906 SH   SOLE   942,000 0 71,906
Zayo Group Holdings Inc COM 98919V105 24,401 948,700 SH   SOLE   883,200 0 65,500
Zebra Technologies Corp COM 989207105 48,031 432,513 SH   SOLE   432,513 0 0
zulily Inc CL A 989774104 40,471 3,103,596 SH   SOLE   2,899,978 0 203,618