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
Abaxis Inc COM 002567105 47,172 735,800 SH   SOLE   706,800 0 29,000
Acuity Brands Inc COM 00508Y102 157,667 937,600 SH   SOLE   867,400 0 70,200
Agios Pharmaceuticals Inc COM 00847X104 32,534 345,000 SH   SOLE   325,000 0 20,000
Airgas Inc COM 009363102 116,827 1,101,000 SH   SOLE   1,101,000 0 0
Akorn Inc COM 009728106 199,993 4,209,486 SH   SOLE   3,871,419 0 338,067
Alamos Gold Inc COM 011527108 20,583 3,513,600 SH   SOLE   3,513,600 0 0
Align Technology Inc COM 016255101 31,410 584,000 SH   SOLE   537,000 0 47,000
Allegion PLC ORD SHS G0176J109 40,495 662,000 SH   SOLE   632,000 0 30,000
Allied World Assurance Co Holdings AG SHS H01531104 95,336 2,359,800 SH   SOLE   2,257,800 0 102,000
Allscripts Healthcare Solutions Inc COM 01988P108 46,310 3,872,094 SH   SOLE   3,562,094 0 310,000
Alnylam Pharmaceuticals Inc COM 02043Q107 42,029 402,500 SH   SOLE   374,400 0 28,100
Amber Road Inc COM 02318Y108 19,101 2,065,000 SH   SOLE   1,436,193 0 628,807
AMERCO COM 023586100 69,054 209,000 SH   SOLE   194,000 0 15,000
AMETEK Inc COM 031100100 510,179 9,710,300 SH   SOLE   9,410,300 0 300,000
Amphenol Corp COM 032095101 291,586 4,948,000 SH   SOLE   4,722,000 0 226,000
ANSYS Inc COM 03662Q105 237,879 2,697,350 SH   SOLE   2,515,450 0 181,900
Associated Banc-Corp COM 045487105 246,435 13,249,200 SH   SOLE   12,372,200 0 877,000
Atmel Corp COM 049513104 54,753 6,652,900 SH   SOLE   6,464,900 0 188,000
Audience Inc COM 05070J102 7,464 1,644,000 SH   SOLE   1,644,000 0 0
Avis Budget Group Inc COM 053774105 203,717 3,451,950 SH   SOLE   3,336,950 0 115,000
Avnet Inc COM 053807103 75,325 1,692,700 SH   SOLE   1,634,700 0 58,000
Bankrate Inc COM 06647F102 107,816 9,507,600 SH   SOLE   8,976,600 0 531,000
Baytex Energy Corp COM 07317Q105 26,786 1,693,899 SH   SOLE   1,480,067 0 213,832
Belden Inc COM 077454106 60,720 649,000 SH   SOLE   605,000 0 44,000
Berkshire Hills Bancorp Inc COM 084680107 4,091 147,700 SH   SOLE   147,700 0 0
Bio-Techne Corp COM 09073M104 148,760 1,483,300 SH   SOLE   1,420,300 0 63,000
Bitauto Holdings Ltd ADS 091727107 41,171 809,169 SH   SOLE   734,858 0 74,311
Blackhawk Network Holdings Inc CL A 09238E203 76,052 2,139,300 SH   SOLE   1,905,500 0 233,800
Boingo Wireless Inc COM 09739C102 36,037 4,779,500 SH   SOLE   4,198,500 0 581,000
BOK Financial Corp COM 05561Q201 129,223 2,110,800 SH   SOLE   2,041,300 0 69,500
Burlington Stores Inc COM 122017106 72,920 1,227,200 SH   SOLE   1,122,700 0 104,500
Cadence Design Systems Inc COM 127387108 82,429 4,470,100 SH   SOLE   4,219,100 0 251,000
CAE Inc COM 124765108 45,104 3,865,464 SH   SOLE   3,456,267 0 409,197
Caesarstone Sdot-Yam Ltd SHS M20598104 118,663 1,954,594 SH   SOLE   1,747,957 0 206,637
CAI International Inc COM 12477X106 48,460 1,972,308 SH   SOLE   1,711,308 0 261,000
CalAmp Corp COM 128126109 27,215 1,681,000 SH   SOLE   1,681,000 0 0
Carrizo Oil & Gas Inc COM 144577103 77,504 1,561,000 SH   SOLE   1,456,000 0 105,000
Casey's General Stores Inc COM 147528103 93,332 1,035,868 SH   SOLE   952,716 0 83,152
Castlight Health Inc CL B 14862Q100 4,685 603,797 SH   SOLE   570,748 0 33,049
Cavco Industries Inc COM 149568107 65,678 875,000 SH   SOLE   768,000 0 107,000
Celldex Therapeutics Inc COM 15117B103 78,056 2,800,700 SH   SOLE   2,643,300 0 157,400
Cepheid COM 15670R107 369,412 6,492,300 SH   SOLE   6,122,600 0 369,700
Chefs' Warehouse Inc/The COM 163086101 29,890 1,332,576 SH   SOLE   1,229,576 0 103,000
Choice Hotels International Inc COM 169905106 63,879 997,013 SH   SOLE   912,163 0 84,850
Cimarex Energy Co COM 171798101 108,024 938,605 SH   SOLE   863,000 0 75,605
Clayton Williams Energy Inc COM 969490101 21,109 416,925 SH   SOLE   416,925 0 0
CNO Financial Group Inc COM 12621E103 152,753 8,870,700 SH   SOLE   8,565,700 0 305,000
Cogent Communications Holdings Inc COM 19239V302 59,715 1,690,200 SH   SOLE   1,605,200 0 85,000
Core Laboratories NV COM N22717107 76,644 733,506 SH   SOLE   687,075 0 46,431
Crown Castle International Corp COM 22822V101 66,445 805,000 SH   SOLE   805,000 0 0
Demandware Inc COM 24802Y105 58,969 968,300 SH   SOLE   885,300 0 83,000
Discovery Communications Inc COM C 25470F302 36,634 1,242,900 SH   SOLE   1,166,900 0 76,000
Domino's Pizza Inc COM 25754A201 50,134 498,600 SH   SOLE   430,600 0 68,000
Donaldson Co Inc COM 257651109 432,737 11,475,400 SH   SOLE   10,668,500 0 806,900
Dorman Products Inc COM 258278100 73,743 1,482,267 SH   SOLE   1,314,588 0 167,679
Drew Industries Inc COM 26168L205 165,770 2,693,700 SH   SOLE   2,477,700 0 216,000
DSW Inc CL A 23334L102 21,243 576,000 SH   SOLE   546,000 0 30,000
Eaton Vance Corp COM 278265103 181,152 4,350,425 SH   SOLE   4,060,334 0 290,091
Education Realty Trust Inc COM 28140H203 132,180 3,735,998 SH   SOLE   3,409,666 0 326,332
Energen Corp COM 29265N108 53,480 810,300 SH   SOLE   755,300 0 55,000
Envestnet Inc COM 29404K106 41,219 735,000 SH   SOLE   735,000 0 0
Envision Healthcare Holdings Inc COM 29413U103 57,955 1,511,200 SH   SOLE   1,459,200 0 52,000
ESCO Technologies Inc COM 296315104 83,012 2,129,600 SH   SOLE   1,972,900 0 156,700
Eversource Energy COM 30040W108 80,832 1,600,000 SH   SOLE   1,600,000 0 0
ExlService Holdings Inc COM 302081104 91,382 2,456,500 SH   SOLE   2,275,500 0 181,000
Expeditors International of Washington Inc COM 302130109 89,225 1,851,900 SH   SOLE   1,806,900 0 45,000
Extra Space Storage Inc COM 30225T102 182,155 2,695,800 SH   SOLE   2,695,800 0 0
F5 Networks Inc COM 315616102 105,147 914,800 SH   SOLE   884,800 0 30,000
Federal Realty Investment Trust SH BEN 313747206 109,083 741,000 SH   SOLE   722,000 0 19,000
Fiesta Restaurant Group Inc COM 31660B101 70,848 1,161,450 SH   SOLE   1,032,450 0 129,000
First Busey Corp COM 319383105 46,674 6,976,727 SH   SOLE   6,656,727 0 320,000
First Commonwealth Financial Corp COM 319829107 5,841 649,000 SH   SOLE   649,000 0 0
Fleetmatics Group PLC COM G35569105 40,725 908,031 SH   SOLE   883,606 0 24,425
FLIR Systems Inc COM 302445101 67,971 2,173,000 SH   SOLE   2,006,000 0 167,000
Fortune Brands Home & Security Inc COM 34964C106 35,420 746,000 SH   SOLE   675,000 0 71,000
Forward Air Corp COM 349853101 90,257 1,662,200 SH   SOLE   1,543,200 0 119,000
Fossil Group Inc COM 34988V106 97,270 1,179,745 SH   SOLE   1,094,745 0 85,000
Fresh Market Inc/The COM 35804H106 112,370 2,765,016 SH   SOLE   2,582,116 0 182,900
Gaiam Inc CL A 36268Q103 16,156 2,216,229 SH   SOLE   2,216,229 0 0
Generac Holdings Inc COM 368736104 184,433 3,787,900 SH   SOLE   3,527,900 0 260,000
Genesee & Wyoming Inc CL A 371559105 38,672 401,000 SH   SOLE   384,000 0 17,000
Genpact Ltd SHS G3992B107 39,630 1,704,500 SH   SOLE   1,556,500 0 148,000
Gentex Corp/MI COM 371901109 66,299 3,622,871 SH   SOLE   3,348,346 0 274,525
Global Eagle Entertainment Inc COM 37951D102 26,633 2,001,000 SH   SOLE   2,001,000 0 0
Global Payments Inc COM 37940X102 129,360 1,411,000 SH   SOLE   1,411,000 0 0
Globalstar Inc COM 378973408 117,839 35,387,157 SH   SOLE   34,632,406 0 754,751
Gogo Inc COM 38046C109 89,411 4,691,006 SH   SOLE   4,294,666 0 396,340
Goldcorp Inc COM 380956409 5,055 279,000 SH   SOLE   279,000 0 0
Graham Corp COM 384556106 2,637 110,000 SH   SOLE   110,000 0 0
Grupo Aeroportuario del Sureste SAB de CV ADR 40051E202 46,744 347,747 SH   SOLE   314,355 0 33,392
GTT Communications Inc COM 362393100 49,107 2,601,000 SH   SOLE   2,601,000 0 0
Guaranty Bancorp COM 40075T607 4,337 255,739 SH   SOLE   255,739 0 0
Gulfport Energy Corp COM 402635304 51,474 1,121,200 SH   SOLE   1,077,000 0 44,200
Hackett Group Inc/The COM 404609109 32,977 3,688,698 SH   SOLE   3,385,698 0 303,000
Hancock Holding Co COM 410120109 68,267 2,286,244 SH   SOLE   2,138,057 0 148,187
HCC Insurance Holdings Inc COM 404132102 51,570 910,000 SH   SOLE   910,000 0 0
HealthSouth Corp COM 421924309 93,467 2,107,000 SH   SOLE   1,939,000 0 168,000
Heartland Express Inc COM 422347104 70,092 2,950,000 SH   SOLE   2,610,000 0 340,000
HEICO Corp CL A 422806208 245,385 4,953,275 SH   SOLE   4,602,125 0 351,150
Henry Schein Inc COM 806407102 54,703 391,800 SH   SOLE   347,800 0 44,000
Hertz Global Holdings Inc COM 42805T105 75,453 3,480,300 SH   SOLE   3,218,300 0 262,000
HomeAway Inc COM 43739Q100 85,351 2,829,000 SH   SOLE   2,613,700 0 215,300
Hornbeck Offshore Services Inc COM 440543106 48,718 2,590,013 SH   SOLE   2,413,734 0 176,279
IGATE Corp COM 45169U105 163,104 3,823,341 SH   SOLE   3,681,341 0 142,000
IMAX Corp COM 45245E109 46,506 1,379,600 SH   SOLE   1,269,600 0 110,000
inContact Inc COM 45336E109 48,071 4,410,197 SH   SOLE   4,353,197 0 57,000
Infinera Corp COM 45667G103 68,280 3,471,278 SH   SOLE   3,471,278 0 0
Informatica Corp COM 45666Q102 124,803 2,845,800 SH   SOLE   2,691,300 0 154,500
Intercept Pharmaceuticals Inc COM 45845P108 89,076 315,850 SH   SOLE   304,850 0 11,000
IPG Photonics Corp COM 44980X109 207,537 2,238,800 SH   SOLE   2,097,800 0 141,000
JB Hunt Transport Services Inc COM 445658107 59,888 701,300 SH   SOLE   676,300 0 25,000
Jones Lang LaSalle Inc COM 48020Q107 55,380 325,000 SH   SOLE   325,000 0 0
Kennametal Inc COM 489170100 118,868 3,528,300 SH   SOLE   3,345,800 0 182,500
Kirby Corp COM 497266106 57,931 771,900 SH   SOLE   738,900 0 33,000
Knoll Inc COM 498904200 86,211 3,679,500 SH   SOLE   3,513,500 0 166,000
Lakeland Financial Corp COM 511656100 38,701 953,697 SH   SOLE   739,897 0 213,800
Lamar Advertising Co COM 512816109 45,869 773,900 SH   SOLE   729,900 0 44,000
LegacyTexas Financial Group Inc COM 52471Y106 14,254 627,087 SH   SOLE   627,087 0 0
Leucadia National Corp COM 527288104 96,518 4,330,100 SH   SOLE   4,072,100 0 258,000
Liberty Global PLC SHS CL A G5480U104 41,176 800,000 SH   SOLE   800,000 0 0
Liberty Global PLC SHS CL C G5480U120 18,230 366,000 SH   SOLE   366,000 0 0
Liquidity Services Inc COM 53635B107 19,138 1,937,000 SH   SOLE   1,833,000 0 104,000
Littelfuse Inc COM 537008104 38,772 390,100 SH   SOLE   367,000 0 23,100
LKQ Corp COM 501889208 245,759 9,615,000 SH   SOLE   9,222,000 0 393,000
Marlin Business Services Corp COM 571157106 20,318 1,014,368 SH   SOLE   688,735 0 325,633
MB Financial Inc COM 55264U108 113,533 3,626,100 SH   SOLE   3,544,100 0 82,000
McGrath RentCorp COM 580589109 60,959 1,852,300 SH   SOLE   1,706,300 0 146,000
Medidata Solutions Inc COM 58471A105 98,512 2,008,800 SH   SOLE   1,884,800 0 124,000
Melco Crown Entertainment Ltd ADR 585464100 46,896 2,185,257 SH   SOLE   1,950,000 0 235,257
Mettler-Toledo International Inc COM 592688105 437,384 1,330,850 SH   SOLE   1,248,750 0 82,100
Michaels Cos Inc/The COM 59408Q106 32,472 1,200,000 SH   SOLE   1,010,910 0 189,090
Middleby Corp/The COM 596278101 130,519 1,271,500 SH   SOLE   1,151,500 0 120,000
Monolithic Power Systems Inc COM 609839105 34,854 662,000 SH   SOLE   662,000 0 0
Moog Inc CL A 615394202 200,556 2,672,300 SH   SOLE   2,508,100 0 164,200
MSCI Inc COM 55354G100 12,900 210,399 SH   SOLE   197,850 0 12,549
Navigant Consulting Inc COM 63935N107 46,017 3,550,693 SH   SOLE   3,370,693 0 180,000
NetSuite Inc COM 64118Q107 76,434 824,000 SH   SOLE   765,808 0 58,192
Nordson Corp COM 655663102 361,312 4,612,100 SH   SOLE   4,363,500 0 248,600
NVR Inc COM 62944T105 136,055 102,400 SH   SOLE   97,100 0 5,300
Oshkosh Corp COM 688239201 115,745 2,372,300 SH   SOLE   2,275,300 0 97,000
Pall Corp COM 696429307 110,871 1,104,400 SH   SOLE   1,059,400 0 45,000
Papa John's International Inc COM 698813102 81,280 1,315,000 SH   SOLE   1,182,000 0 133,000
Patriot National Inc COM 70338T102 17,474 1,375,885 SH   SOLE   973,366 0 402,519
PDC Energy Inc COM 69327R101 38,968 721,100 SH   SOLE   656,000 0 65,100
Performance Sports Group Ltd COM 71377G100 16,010 821,000 SH   SOLE   627,034 0 193,966
PGT Inc COM 69336V101 45,452 4,067,300 SH   SOLE   3,683,300 0 384,000
Phoenix New Media Ltd ADS 71910C103 1,457 257,000 SH   SOLE   257,000 0 0
Pool Corp COM 73278L105 139,959 2,006,300 SH   SOLE   1,908,300 0 98,000
Popeyes Louisiana Kitchen Inc COM 732872106 38,883 650,000 SH   SOLE   650,000 0 0
Post Properties Inc COM 737464107 103,738 1,822,200 SH   SOLE   1,712,200 0 110,000
PVH Corp COM 693656100 53,738 504,300 SH   SOLE   463,600 0 40,700
Quanta Services Inc COM 74762E102 115,090 4,034,000 SH   SOLE   4,034,000 0 0
RCM Technologies Inc COM 749360400 3,397 507,000 SH   SOLE   507,000 0 0
RetailMeNot Inc COM 76132B106 43,876 2,436,217 SH   SOLE   2,295,217 0 141,000
RLI Corp COM 749607107 44,968 858,000 SH   SOLE   810,000 0 48,000
Rogers Corp COM 775133101 70,520 857,800 SH   SOLE   745,800 0 112,000
Rosetta Resources Inc COM 777779307 33,526 1,969,800 SH   SOLE   1,849,100 0 120,700
RPX Corp COM 74972G103 42,786 2,973,300 SH   SOLE   2,842,300 0 131,000
Rubicon Technology Inc COM 78112T107 13,396 3,400,000 SH   SOLE   3,400,000 0 0
Rush Enterprises Inc CL A 781846209 103,911 3,797,921 SH   SOLE   3,400,421 0 397,500
Rush Enterprises Inc CL B 781846308 18,555 750,600 SH   SOLE   664,000 0 86,600
Sandy Spring Bancorp Inc COM 800363103 41,741 1,591,344 SH   SOLE   1,539,196 0 52,148
Sanmina Corp COM 801056102 81,027 3,349,600 SH   SOLE   3,284,600 0 65,000
Sarepta Therapeutics Inc COM 803607100 43,457 3,272,400 SH   SOLE   3,144,400 0 128,000
SBA Communications Corp COM 78388J106 174,725 1,492,100 SH   SOLE   1,422,100 0 70,000
Seattle Genetics Inc COM 812578102 120,480 3,408,200 SH   SOLE   3,233,200 0 175,000
SEI Investments Co COM 784117103 409,297 9,283,205 SH   SOLE   8,659,351 0 623,854
Select Comfort Corp COM 81616X103 104,769 3,039,437 SH   SOLE   2,818,518 0 220,919
Shutterfly Inc COM 82568P304 49,764 1,100,000 SH   SOLE   1,009,448 0 90,552
SilverCrest Mines Inc COM 828365106 3,745 3,412,300 SH   SOLE   3,412,300 0 0
Sirona Dental Systems Inc COM 82966C103 51,765 575,231 SH   SOLE   530,231 0 45,000
SM Energy Co COM 78454L100 53,044 1,026,400 SH   SOLE   964,400 0 62,000
Sociedad Quimica y Minera de Chile SA ADR B 833635105 20,537 1,125,294 SH   SOLE   1,007,000 0 118,294
Solera Holdings Inc COM 83421A104 146,063 2,827,398 SH   SOLE   2,612,398 0 215,000
SPS Commerce Inc COM 78463M107 115,296 1,718,273 SH   SOLE   1,555,771 0 162,502
Stratasys Ltd COM M85548101 28,733 544,400 SH   SOLE   521,400 0 23,000
SVB Financial Group COM 78486Q101 144,876 1,140,400 SH   SOLE   1,087,400 0 53,000
Synageva BioPharma Corp COM 87159A103 316,538 3,245,542 SH   SOLE   2,996,458 0 249,084
Tahoe Resources Inc COM 873868103 28,516 2,602,260 SH   SOLE   2,393,477 0 208,783
Terreno Realty Corp COM 88146M101 53,718 2,356,070 SH   SOLE   2,196,070 0 160,000
Textainer Group Holdings Ltd SHS G8755E109 34,208 1,140,652 SH   SOLE   1,015,460 0 125,192
Textura Corp COM 883211104 53,236 1,958,657 SH   SOLE   1,781,115 0 177,542
Thermon Group Holdings Inc COM 88362T103 68,096 2,829,089 SH   SOLE   2,519,534 0 309,555
Toro Co/The COM 891092108 136,344 1,944,436 SH   SOLE   1,846,736 0 97,700
Towerstream Corp COM 892000100 8,640 4,000,000 SH   SOLE   4,000,000 0 0
Trimble Navigation Ltd COM 896239100 116,046 4,605,000 SH   SOLE   4,431,000 0 174,000
TrustCo Bank Corp NY COM 898349105 36,200 5,261,700 SH   SOLE   4,313,500 0 948,200
Tyler Technologies Inc COM 902252105 29,072 241,200 SH   SOLE   223,200 0 18,000
Ultimate Software Group Inc/The COM 90385D107 102,814 604,950 SH   SOLE   576,950 0 28,000
Ultragenyx Pharmaceutical Inc COM 90400D108 139,374 2,244,710 SH   SOLE   2,124,710 0 120,000
United Natural Foods Inc COM 911163103 143,502 1,862,700 SH   SOLE   1,735,500 0 127,200
Urban Outfitters Inc COM 917047102 25,623 561,300 SH   SOLE   516,300 0 45,000
Vail Resorts Inc COM 91879Q109 134,270 1,298,300 SH   SOLE   1,197,100 0 101,200
VeriFone Systems Inc COM 92342Y109 48,033 1,376,700 SH   SOLE   1,272,700 0 104,000
Verint Systems Inc COM 92343X100 88,969 1,436,600 SH   SOLE   1,350,600 0 86,000
VeriSign Inc COM 92343E102 87,932 1,313,000 SH   SOLE   1,228,000 0 85,000
Verisk Analytics Inc COM 92345Y106 108,956 1,526,000 SH   SOLE   1,446,000 0 80,000
Virtusa Corp COM 92827P102 92,981 2,247,000 SH   SOLE   2,062,000 0 185,000
Vonage Holdings Corp COM 92886T201 100,110 20,389,000 SH   SOLE   18,917,000 0 1,472,000
VWR Corp COM 91843L103 54,418 2,093,800 SH   SOLE   2,011,300 0 82,500
WABCO Holdings Inc COM 92927K102 124,232 1,011,000 SH   SOLE   962,000 0 49,000
Wabtec Corp/DE COM 929740108 97,005 1,021,000 SH   SOLE   1,021,000 0 0
WESCO International Inc COM 95082P105 127,277 1,821,100 SH   SOLE   1,709,900 0 111,200
WEX Inc COM 96208T104 104,410 972,525 SH   SOLE   874,925 0 97,600
Williams-Sonoma Inc COM 969904101 60,197 755,200 SH   SOLE   653,200 0 102,000
Wisconsin Energy Corp COM 976657106 28,562 577,000 SH   SOLE   577,000 0 0
WNS Holdings Ltd COM 92932M101 96,867 3,983,000 SH   SOLE   3,833,000 0 150,000
World Acceptance Corp COM 981419104 75,752 1,038,842 SH   SOLE   1,014,349 0 24,493
Wright Medical Group Inc COM 98235T107 59,330 2,299,600 SH   SOLE   2,122,700 0 176,900
WuXi PharmaTech Cayman Inc COM 929352102 44,481 1,147,000 SH   SOLE   1,035,000 0 112,000
Zayo Group Holdings Inc COM 98919V105 34,438 1,231,700 SH   SOLE   1,166,200 0 65,500
Zebra Technologies Corp COM 989207105 42,999 474,000 SH   SOLE   474,000 0 0
zulily Inc CL A 989774104 5,553 427,450 SH   SOLE   427,450 0 0