0001144204-14-031093.txt : 20140515 0001144204-14-031093.hdr.sgml : 20140515 20140515142051 ACCESSION NUMBER: 0001144204-14-031093 CONFORMED SUBMISSION TYPE: 13F-HR PUBLIC DOCUMENT COUNT: 2 CONFORMED PERIOD OF REPORT: 20140331 FILED AS OF DATE: 20140515 DATE AS OF CHANGE: 20140515 EFFECTIVENESS DATE: 20140515 FILER: COMPANY DATA: COMPANY CONFORMED NAME: OBERWEIS ASSET MANAGEMENT INC/ CENTRAL INDEX KEY: 0000937886 IRS NUMBER: 364106772 STATE OF INCORPORATION: MA FISCAL YEAR END: 1231 FILING VALUES: FORM TYPE: 13F-HR SEC ACT: 1934 Act SEC FILE NUMBER: 028-04688 FILM NUMBER: 14846039 BUSINESS ADDRESS: STREET 1: 3333 WARRENVILLE ROAD STREET 2: SUITE 500 CITY: LISLE STATE: IL ZIP: 60532 BUSINESS PHONE: 6305772300 MAIL ADDRESS: STREET 1: 3333 WARRENVILLE ROAD STREET 2: SUITE 500 CITY: LISLE STATE: IL ZIP: 60532 13F-HR 1 primary_doc.xml 13F-HR LIVE false false false 0000937886 XXXXXXXX 03-31-2014 03-31-2014 false OBERWEIS ASSET MANAGEMENT INC/

3333 Warrenville Road Suite 500 Lisle IL 60532

13F HOLDINGS REPORT 028-04688 N Patrick B. Joyce 800-323-6166 /s/ Patrick B. Joyce Lisle IL 05-14-2014 0 149 476248 INFORMATION TABLE 2 infotable.xml 21Vianet Group, Inc. - ADR com 90138A103 15449 538279 SH SOLE 349700 0 188579 500.COM com 33829R100 8899 241160 SH SOLE 234000 0 7160 8X8 Inc. com 282914100 1512 139900 SH SOLE 139900 0 0 Acadia Healthcare Co., Inc. com 00404A109 1218 27000 SH SOLE 27000 0 0 Advanced Emissions Solutions, com 00770c101 250 10200 SH SOLE 10200 0 0 Ambarella, Inc. com G037AX101 2468 92400 SH SOLE 92400 0 0 Amgen, Inc. com 031162100 354 2867 SH SOLE 0 0 2867 Anika Therapeutics, Inc. com 035255108 267 6500 SH SOLE 6500 0 0 Apple, Inc. com 037833100 270 504 SH SOLE 0 0 504 Astronics Corp. com 046433108 213 3360 SH SOLE 3360 0 0 Attunity Ltd. com M15332121 823 88210 SH SOLE 84500 0 3710 BHP Billiton Ltd. ADR com 088606108 272 4008 SH SOLE 0 0 4008 Bancorp, Inc./The com 05969A105 2492 132498 SH SOLE 122400 0 10098 Bank of New York Mellon Corp. com 064058100 224 6359 SH SOLE 0 0 6359 Barrett Business Services com 068463108 3790 63616 SH SOLE 17400 0 46216 Bitauto com 091727107 3362 93800 SH SOLE 92500 0 1300 Bofi Holding, Inc. com 05566U108 1438 16772 SH SOLE 14076 0 2696 Bolt Technology Corp. com 097698104 595 30100 SH SOLE 30100 0 0 Bonanza Creek Energy, Inc. com 097793103 8706 196074 SH SOLE 60600 0 135474 Bridge Bancorp, Inc. com 108035106 390 14600 SH SOLE 14600 0 0 Bryn Mawr Bank Corp. com 117665109 353 12300 SH SOLE 12300 0 0 CalAmp Corp. com 128126109 1120 40200 SH SOLE 40200 0 0 Callidus Software Inc. com 13123E500 8292 662309 SH SOLE 273100 0 389209 Callon Petroleum Corp. com 13123X102 1141 136300 SH SOLE 136300 0 0 Canadian Solar, Inc. com 136635109 3966 123780 SH SOLE 118000 0 5780 Cardiovascular Systems, Inc. com 141619106 9776 307531 SH SOLE 116900 0 190631 Catamaran Corp. com 148887102 205 4570 SH SOLE 0 0 4570 Centerstate Banks, Inc. com 15201P109 747 68400 SH SOLE 68400 0 0 China Distance Educ Hldgs Ltd. com 16944W104 1803 100000 SH SOLE 100000 0 0 China Mobile Games & Entertain com 16952T100 14918 675322 SH SOLE 421200 0 254122 Chinacache International Spon com 16950M107 3081 150000 SH SOLE 150000 0 0 Consumer Portfolio Services com 210502100 903 132050 SH SOLE 126700 0 5350 Criteo Sa-Spon ADR com 226718104 11082 273300 SH SOLE 64300 0 209000 Cyberonics, Inc. com 23251P102 7117 109057 SH SOLE 31300 0 77757 Datawatch Corp. com 237917208 721 26590 SH SOLE 13700 0 12890 Dealertrack Technologies, Inc. com 242309102 1800 36600 SH SOLE 36600 0 0 Diamondback Energy Inc. com 25278X109 1817 27000 SH SOLE 27000 0 0 Diodes, Inc. com 254543101 1408 53900 SH SOLE 53900 0 0 Dot Hill Systems, Inc. com 25848T109 906 234000 SH SOLE 234000 0 0 E-Commerce China Spon ADR com 26833A105 1493 104000 SH SOLE 100000 0 4000 E-House China Holdings Limited com 26852W103 1173 97000 SH SOLE 92000 0 5000 EPL Oil & Gas com 26883D108 2428 62900 SH SOLE 62900 0 0 Eagle Bancorp, Inc. com 268948106 1375 38080 SH SOLE 38080 0 0 Ehealth, Inc. com 28238P109 2784 54800 SH SOLE 54800 0 0 Elecsys Corp. com 28473M100 702 52300 SH SOLE 52300 0 0 Emc Corporation com 268648102 217 7904 SH SOLE 0 0 7904 Envestnet, Inc. com 29404K106 3552 88396 SH SOLE 32900 0 55496 Evolution Petroleum Corp. com 30049A107 876 68850 SH SOLE 67900 0 950 Exxon Mobil Corp. com 30231G102 201 2055 SH SOLE 0 0 2055 Federated National Holding C com 31422T101 1489 81300 SH SOLE 81300 0 0 Financial Engines, Inc. com 317485100 234 4600 SH SOLE 4600 0 0 Fleetmatics Group Plc com G35569105 1131 33800 SH SOLE 33800 0 0 Flotek Inds Inc. com 343389102 1259 45200 SH SOLE 45200 0 0 G III Apparel Group Ltd. com 36237H101 16181 226059 SH SOLE 108200 0 117859 Gentherm, Inc. com 37253A103 10589 304971 SH SOLE 144600 0 160371 Gigamon, Inc. com 37518B102 1261 41500 SH SOLE 41500 0 0 Grand Canyon Education, Inc. com 38526M106 1172 25100 SH SOLE 25100 0 0 Gulfport Energy Corp. com 402635304 1815 25500 SH SOLE 25500 0 0 Healthstream Inc. com 42222N103 470 17600 SH SOLE 17600 0 0 IGI Laboratories, Inc. com 449575109 373 66100 SH SOLE 66100 0 0 INPHI Corp. com 45772F107 1218 75700 SH SOLE 75700 0 0 IPG Photonics Corp. com 44980X109 1628 22900 SH SOLE 22900 0 0 Icon Plc Corp. com G4705A100 19320 406300 SH SOLE 97500 0 308800 Immersion Corp Com com 452521107 3846 364548 SH SOLE 74200 0 290348 Incontact, Inc. com 45336E109 565 58860 SH SOLE 56200 0 2660 Innovative Solutions & Support com 45769N105 511 67900 SH SOLE 67900 0 0 Intel Corporation com 458140100 255 9875 SH SOLE 0 0 9875 Interactive Intelligence Group com 45841V109 13523 186521 SH SOLE 72600 0 113921 Invensense, Inc. com 46123D205 12006 507229 SH SOLE 190300 0 316929 Inventure Foods, Inc. com 461212102 329 23500 SH SOLE 23500 0 0 JP Morgan Chase & Company Inc. com 46625H100 343 5655 SH SOLE 0 0 5655 Johnson & Johnson com 478160104 429 4372 SH SOLE 0 0 4372 Kimberly Clark Corp. com 494368103 227 2059 SH SOLE 0 0 2059 Kofax Limited com G5307C105 121 13900 SH SOLE 13900 0 0 Kongzhong Corp. ADR com 50047P104 2294 200000 SH SOLE 200000 0 0 Lannett Company, Inc. com 516012101 1411 39500 SH SOLE 39500 0 0 Ligand Pharmaceuticals Cl B com 53220K504 14378 213737 SH SOLE 102300 0 111437 Lionbridge Technologies, Inc. com 536252109 156 23300 SH SOLE 23300 0 0 MGC Diagnostics Corp. com 552768103 590 51800 SH SOLE 51800 0 0 Mastercard, Inc. com 57636Q104 209 2804 SH SOLE 0 0 2804 Matrix Service Co. com 576853105 4346 128644 SH SOLE 68000 0 60644 Maximus, Inc. com 577933104 2826 62985 SH SOLE 52700 0 10285 Maxlinear, Inc. Class A com 57776J100 697 73500 SH SOLE 73500 0 0 Medidata Solutions, Inc. com 58471A105 13036 239890 SH SOLE 109420 0 130470 Melco Crown Entertainment ADR com 585464100 4020 104000 SH SOLE 100000 0 4000 Merit Medical System Inc com 589889104 1067 74600 SH SOLE 74600 0 0 Methode Electronics, Inc. com 591520200 12281 400567 SH SOLE 172374 0 228193 Microsoft Corp. com 594918104 431 10510 SH SOLE 0 0 10510 Momenta Pharmaceuticals Inc. com 60877T100 576 49400 SH SOLE 49400 0 0 Montage Technology Group Ltd. com G6209T105 13171 657889 SH SOLE 372700 0 285189 Multimedia Games com 625453105 7216 248473 SH SOLE 86862 0 161611 NQ Mobile, Inc. - ADR com 64118U108 23319 1324179 SH SOLE 917100 0 407079 Netease.Com, Inc. com 64110W102 4206 62503 SH SOLE 61113 0 1390 Omnicell, Inc. com 68213N109 1551 54200 SH SOLE 54200 0 0 On Assignment, Inc. com 682159108 8081 209394 SH SOLE 85482 0 123912 PGT, Inc. com 69336V101 7575 658093 SH SOLE 164300 0 493793 Pacific Premier Bancorp, Inc. com 69478X105 671 41600 SH SOLE 41600 0 0 Pennymac Mortgage Investment com 70931T103 6350 265675 SH SOLE 61700 0 203975 Perficient Inc. com 71375U101 250 13800 SH SOLE 12200 0 1600 Pixelworks, Inc. com 72581M305 1599 288560 SH SOLE 283900 0 4660 Points International Ltd. com 730843208 1216 47500 SH SOLE 47500 0 0 Qihoo 360 Technology Co-ADR com 74734M109 9161 92000 SH SOLE 92000 0 0 Quicklogic Corp. com 74837P108 908 174300 SH SOLE 174300 0 0 RPX Corporation com 74972G103 1385 85100 SH SOLE 85100 0 0 Rentrak Corp. com 760174102 1025 17000 SH SOLE 17000 0 0 Rignet, Inc. com 766582100 1125 20900 SH SOLE 20900 0 0 Ring Energy, Inc. com 76680v108 1969 129000 SH SOLE 128100 0 900 SPDR S&P 500 ETF Trust com 78462F103 1421 7600 SH SOLE 7600 0 0 Sanchez Energy Corp. com 79970Y105 1843 62200 SH SOLE 62200 0 0 Sciquest, Inc. com 80908T101 2623 97100 SH SOLE 97100 0 0 Sequential Brands Group, Inc. com 817340201 477 59640 SH SOLE 59640 0 0 Sevcon, Inc. com 81783K108 418 36600 SH SOLE 36600 0 0 ShoreTel com 825211105 151 17500 SH SOLE 17500 0 0 Silicom Ltd. com M84116108 4004 64535 SH SOLE 58800 0 5735 Soufun Holdings Ltd. ADR com 836034108 1745 25500 SH SOLE 25000 0 500 Spectranetics Corp. com 84760c107 867 28600 SH SOLE 28600 0 0 Stamps.com, Inc. com 852857200 7984 237912 SH SOLE 98400 0 139512 Steven Madden Ltd. com 556269108 5356 148850 SH SOLE 32800 0 116050 Stratasys Ltd. com M85548101 1231 11600 SH SOLE 11600 0 0 Strattec Security Corp. com 863111100 795 11000 SH SOLE 11000 0 0 Sucampo Pharmaceuticals com 864909106 672 94000 SH SOLE 94000 0 0 Sungy Mobile com 86737M100 2373 113500 SH SOLE 110000 0 3500 Sunpower Corp. com 867652406 823 25500 SH SOLE 25500 0 0 Synaptics, Inc. com 87157D109 10960 182606 SH SOLE 67100 0 115506 Synchronoss Technologies Inc. com 87157B103 1763 51400 SH SOLE 51400 0 0 Synergy Resources Corp. com 87164P103 1214 112900 SH SOLE 112900 0 0 Taser International, Inc. com 87651B104 404 22100 SH SOLE 22100 0 0 The Travelers Co., Inc. com 89417E109 329 3868 SH SOLE 0 0 3868 Toyota Motor Corp. ADR com 892331307 222 1963 SH SOLE 0 0 1963 Triangle Petroleum Corp. com 89600B201 1046 126900 SH SOLE 126900 0 0 Trinity Industries Inc. com 896522109 216 3000 SH SOLE 3000 0 0 US Silica Holdings, Inc. com 90346E103 1332 34900 SH SOLE 34900 0 0 United Insurance Holdings Co. com 910710102 1313 89850 SH SOLE 86400 0 3450 Vascular Solutions com 92231m109 943 36000 SH SOLE 36000 0 0 Verizon Communications com 92343V104 299 6291 SH SOLE 0 0 6291 Vince Holding Corp. com 92719W108 8275 313921 SH SOLE 78000 0 235921 Vipshop Holdings Ltd. ADS com 92763W103 11272 75500 SH SOLE 75300 0 200 Wageworks, Inc. com 930427109 7630 135991 SH SOLE 53200 0 82791 Wal Mart Stores Inc. com 931142103 288 3771 SH SOLE 0 0 3771 Web.com Group, Inc. com 94733A104 1331 39100 SH SOLE 39100 0 0 Wells Fargo & Co. com 949746101 228 4575 SH SOLE 0 0 4575 Wendy's International Inc. com 95058w100 126 13800 SH SOLE 13800 0 0 Westell Technologies Inc com 957541105 696 188600 SH SOLE 188600 0 0 Winnebago Industries, Inc. com 974637100 1235 45100 SH SOLE 45100 0 0 Xenacare Hldgs, Inc. com 98401A106 1 140000 SH SOLE 0 0 140000 YY com 98426T106 6361 83300 SH SOLE 80500 0 2800 Youku Tudou, Inc. com 98742U100 2439 87000 SH SOLE 85000 0 2000 Zebra Technologies Corp.-Cl A com 989207105 236 3400 SH SOLE 1400 0 2000 eGain Corp. com 28225C806 4966 703410 SH SOLE 256300 0 447110