0001104659-20-125545.txt : 20201116 0001104659-20-125545.hdr.sgml : 20201116 20201116103250 ACCESSION NUMBER: 0001104659-20-125545 CONFORMED SUBMISSION TYPE: 13F-HR PUBLIC DOCUMENT COUNT: 2 CONFORMED PERIOD OF REPORT: 20200930 FILED AS OF DATE: 20201116 DATE AS OF CHANGE: 20201116 EFFECTIVENESS DATE: 20201116 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: 201314419 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 09-30-2020 09-30-2020 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 11-16-2020 0 126 297038 INFORMATION TABLE 2 infotable.xml 21Vianet Group, Inc. - ADR com 90138A103 1853 80000 SH SOLE 80000 0 0 ACM Research, Inc. Class A com 00108J109 713 10320 SH SOLE 10320 0 0 AMR Corp Escrow com 001ESC102 0 18000 SH SOLE 18000 0 0 Accuray Inc. com 004397105 435 181200 SH SOLE 181200 0 0 Addus Homecare Corp. com 006739106 2130 22540 SH SOLE 18210 0 4330 Adtran, Inc. com 00738A106 408 39800 SH SOLE 39800 0 0 Air Transport Services Group, com 00922R105 967 38580 SH SOLE 38100 0 480 Alibaba Group Holding Ltd ADR com 01609W102 607 2065 SH SOLE 130 0 1935 Allied Motion Technologies com 019330109 722 17500 SH SOLE 17500 0 0 Alphatec Hldgs Inc. com 02081G201 914 137600 SH SOLE 137600 0 0 Amazon.com com 023135106 315 100 SH SOLE 0 0 100 Amedisys Inc. com 023436108 709 3000 SH SOLE 3000 0 0 Ameresco, Inc. com 02361E108 1487 44508 SH SOLE 44508 0 0 American Power Corp com 02906T107 0 10000 SH SOLE 0 0 10000 Amgen, Inc. com 031162100 380 1493 SH SOLE 0 0 1493 Antares Pharma, Inc. com 036642106 542 200600 SH SOLE 200600 0 0 Apple, Inc. com 037833100 992 8569 SH SOLE 240 0 8329 Arco Platform Ltd. Com Cl A com G04553106 748 18310 SH SOLE 18310 0 0 Arcosa, Inc. com 039653100 203 4600 SH SOLE 4600 0 0 Audio Codes ADR com M15342104 14724 468012 SH SOLE 337698 0 130314 Avatar Ventures com 05350B100 0 10000 SH SOLE 0 0 10000 Axcelis Technologies com 054540208 1236 56170 SH SOLE 43780 0 12390 BJs Wholesale Club Holdings, I com 05550J101 1895 45600 SH SOLE 35650 0 9950 Bandwidth, Inc. com 05988J103 7538 43179 SH SOLE 34259 0 8920 Baudax Bio, Inc. com 07160F107 369 133160 SH SOLE 133160 0 0 BioDelivery Sciences Internati com 09060J106 645 172850 SH SOLE 170750 0 2100 Boot Barn Hldgs, Inc. com 099406100 704 25000 SH SOLE 25000 0 0 Bottomline Technologies com 101388106 1256 29780 SH SOLE 27130 0 2650 CACI International, Inc. com 127190304 2137 10025 SH SOLE 6820 0 3205 CRA Int'l Inc. com 12618T105 693 18500 SH SOLE 18500 0 0 Cadence Design System, Inc. com 127387108 346 3241 SH SOLE 3241 0 0 Camtek, Ltd. com M20791105 907 58980 SH SOLE 58980 0 0 CareDx, Inc. com 14167L103 4511 118900 SH SOLE 101550 0 17350 Castle Biosciences, Inc. com 14843C105 8269 160720 SH SOLE 121100 0 39620 Ceva Inc. com 157210105 870 22100 SH SOLE 22100 0 0 ChannelAdvisor Corporation com 159179100 4622 319390 SH SOLE 272670 0 46720 Clearfield, Inc. com 18482P103 436 21600 SH SOLE 21600 0 0 Collegium Pharmaceutical, Inc. com 19459J104 1108 53200 SH SOLE 53200 0 0 Constellium NV Cl A com F21107101 49261 6275307 SH SOLE 4531007 0 1744300 Crocs, Inc. com 227046109 1884 44100 SH SOLE 44100 0 0 Dada Nexus Limited com 23344D108 265 10000 SH SOLE 10000 0 0 Deckers Outdoor Corp. com 243537107 3509 15950 SH SOLE 10480 0 5470 Digital Turbine, Inc. com 25400W102 2891 88300 SH SOLE 88300 0 0 El Pollo Loco Hldgs, Inc. com 268603107 530 32700 SH SOLE 32700 0 0 EnPro Industries, Inc. com 29355x107 795 14100 SH SOLE 14100 0 0 Endava Plc Ads com 29260V105 26459 418982 SH SOLE 305282 0 113700 Ensign Group, Inc. com 29358P101 1295 22700 SH SOLE 22700 0 0 Enterprise Finl Svcs com 293712105 785 28805 SH SOLE 15620 0 13185 EverQuote, Inc. com 30041R108 483 12500 SH SOLE 12500 0 0 Faro Technologies, Inc. com 311642102 1195 19600 SH SOLE 19600 0 0 First Foundation Inc. com 32026V104 344 26300 SH SOLE 26300 0 0 Fiverr Intl Ltd. com M4R82T106 65514 471394 SH SOLE 340194 0 131200 GDS Holdings Ltd. ADR com 36165L108 2583 31561 SH SOLE 31461 0 100 Graphic Packaging Hldg., Co. com 388689101 172 12200 SH SOLE 12200 0 0 Green Dot Corp. Cl A com 39304D102 243 4800 SH SOLE 4800 0 0 Griffon Corp. com 398433102 719 36800 SH SOLE 36800 0 0 Helen of Troy Corp., Ltd. com G4388N106 213 1100 SH SOLE 1100 0 0 Helix Energy Solutions Group, com 42330p107 201 83300 SH SOLE 83300 0 0 Huron Consulting Group, Inc. com 447462102 653 16600 SH SOLE 16600 0 0 I-Mab ADR com 44975P103 470 10000 SH SOLE 10000 0 0 II-VI Inc. com 902104108 1586 39110 SH SOLE 27720 0 11390 INPHI Corp. com 45772F107 4774 42530 SH SOLE 26810 0 15720 Inmode Ltd. com M5425M103 970 26800 SH SOLE 26800 0 0 Inovalon Holdings, Inc. com 45781D101 1684 63680 SH SOLE 38000 0 25680 Intel Corporation com 458140100 307 5934 SH SOLE 0 0 5934 International Money Express, I com 46005L101 520 36200 SH SOLE 36200 0 0 JP Morgan Chase & Company Inc. com 46625H100 431 4473 SH SOLE 140 0 4333 Johnson & Johnson com 478160104 369 2481 SH SOLE 0 0 2481 LI Auto, Inc. ADR com 50202M102 530 30500 SH SOLE 30500 0 0 Limelight Networks, Inc. com 53261M104 1181 205100 SH SOLE 205100 0 0 LiqTech International, Inc com 53632A201 1426 168729 SH SOLE 168729 0 0 Liveperson, Inc. com 538146101 224 4300 SH SOLE 4300 0 0 M/I Homes, Inc. com 55305B101 1151 25000 SH SOLE 25000 0 0 MYR Group, Inc. com 55405W104 837 22500 SH SOLE 22500 0 0 Macom Technology Solutions com 55405Y100 201 5900 SH SOLE 5900 0 0 Magnachip Semiconductor Corp. com 55933J203 1110 81000 SH SOLE 81000 0 0 Magnite, Inc. com 55955D100 1906 274507 SH SOLE 192187 0 82320 Malibu Boats, Inc. com 56117J100 788 15900 SH SOLE 15900 0 0 Masonite Intl Corp. com 575385109 1338 13600 SH SOLE 13600 0 0 Mastercard, Inc. com 57636Q104 454 1343 SH SOLE 0 0 1343 Matson, Inc. com 57686g105 204 5100 SH SOLE 4700 0 400 McDonald's Corporation com 580135101 234 1068 SH SOLE 0 0 1068 Mercantile Bank Corp. com 587376104 332 18400 SH SOLE 18400 0 0 Mercury Systems, Inc. com 589378108 613 7910 SH SOLE 3410 0 4500 Merit Medical System Inc com 589889104 235 5400 SH SOLE 5400 0 0 Microsoft Corp. com 594918104 629 2990 SH SOLE 0 0 2990 Model N, Inc. com 607525102 2877 81540 SH SOLE 66430 0 15110 NIO Inc com 62914V106 1698 80000 SH SOLE 80000 0 0 Natural Grocers By Vitamin C com 63888U108 225 22800 SH SOLE 22800 0 0 New Oriental Education ADR com 647581107 1570 10500 SH SOLE 10500 0 0 Newmont Mining com 651639106 405 6381 SH SOLE 400 0 5981 OOMA Inc. com 683416101 775 59400 SH SOLE 59400 0 0 OneSpan, Inc. com 68287N100 952 45400 SH SOLE 42700 0 2700 Oxford Immunotec Global Plc com G6855A103 495 42300 SH SOLE 42300 0 0 Perdoceo Education Corp. com 71363P106 424 34659 SH SOLE 34659 0 0 Perficient Inc. com 71375U101 962 22500 SH SOLE 22500 0 0 Preformed Line Prods Co. com 740444104 341 7000 SH SOLE 7000 0 0 Rapid7, Inc. com 753422104 1786 29160 SH SOLE 16750 0 12410 Resmed Inc. com 761152107 249 1450 SH SOLE 0 0 1450 SVMK Inc com 78489X103 780 35300 SH SOLE 9890 0 25410 Sea Ltd com 81141R100 1716 11137 SH SOLE 11137 0 0 Shopify, Inc. com 82509L107 367 359 SH SOLE 359 0 0 Shutterstock, Inc. com 825690100 779 14960 SH SOLE 6110 0 8850 Shyft Group, Inc. com 825698103 1257 66600 SH SOLE 66600 0 0 Sonic Automotive 'a' com 83545G102 1128 28100 SH SOLE 28100 0 0 Synaptics, Inc. com 87157D109 876 10890 SH SOLE 5130 0 5760 Synnex Corp. com 87162W100 224 1600 SH SOLE 1600 0 0 TTEC Hldgs, Inc. com 89854H102 218 4000 SH SOLE 4000 0 0 Tal Education Group ADR com 874080104 2509 33000 SH SOLE 33000 0 0 Tandem Diabetes Care, Inc. com 875372203 6057 53370 SH SOLE 35960 0 17410 Tempur Sealy International, In com 88023U101 330 3700 SH SOLE 3700 0 0 The Travelers Co., Inc. com 89417E109 269 2485 SH SOLE 0 0 2485 Titan Oil & Gas, Inc. com 888309101 0 10000 SH SOLE 0 0 10000 Trex Company, Inc. com 89531P105 1539 21500 SH SOLE 12740 0 8760 Truecar, Inc. com 89785L107 650 130000 SH SOLE 130000 0 0 US Xpress Enterprises, Inc. com 90338N202 958 116000 SH SOLE 116000 0 0 Ultra Clean Holdings com 90385V107 839 39100 SH SOLE 39100 0 0 Upland Software, Inc. com 91544A109 1120 29700 SH SOLE 29700 0 0 Upwork, Inc. com 91688F104 6985 400500 SH SOLE 320280 0 80220 Verizon Communications com 92343V104 203 3412 SH SOLE 0 0 3412 Vocera Communications, Inc. com 92857F107 817 28100 SH SOLE 28100 0 0 Wal Mart Stores Inc. com 931142103 246 1757 SH SOLE 0 0 1757 Xenacare Hldgs, Inc. com 98401A106 0 140000 SH SOLE 0 0 140000 Zumiez Inc. com 989817101 1121 40300 SH SOLE 40300 0 0 eGain Corp. com 28225C806 937 66100 SH SOLE 66100 0 0 SPDR S&P 500 ETF Trust com 78462F103 1465 4376 SH SOLE 0 0 4376