OBERWEIS ASSET MANAGEMENT INC/ at 2023-03-31

Filling information for OBERWEIS ASSET MANAGEMENT INC/ as Treemap, investor disclosed 174 total holdings based on 2023-03-31 SEC fillings. A list of the exposed holdings

Product name

Product description

Changed holding value / amount

Details
Total Holding Value, based on SEC fillings over time
CUSIP Symbol Name Title Of Class Value in 1000's Amount
01626W101 01626W101 Alight, Inc. com 2226573 241756
90214J101 90214J101 2U, Inc. com 1810455 264300
002121101 002121101 A10 Networks, Inc. com 3310213 213700
000957100 000957100 ABM Industries, Inc. com 2602026 57900
00108J109 00108J109 ACM Research, Inc. Class A com 2522520 215600
000899104 000899104 ADMA Biologics, Inc. com 3871045 1169500
001ESC102 001ESC102 AMR Corp Escrow com 0 18000
01741R102 01741R102 ATI, Inc. com 2876634 72900
00404A109 00404A109 Acadia Healthcare Co., Inc. com 2514300 34800
00486H105 00486H105 Adtran, Inc. com 2082418 131300
00760J108 00760J108 Aehr Test Systems com 21686330 699108
01749D105 01749D105 Allegro MicroSystems, Inc. com 5926765 123500
019330109 019330109 Allied Motion Technologies com 2187590 56600
01973R101 01973R101 Allison Transmission Holdings, com 3003936 66400
02081G201 02081G201 Alphatec Hldgs Inc. com 10585068 678530
02128L106 02128L106 Alta Equipment Group, Inc. com 1711800 108000
02156B103 02156B103 Alteryx, Inc. Com Cl A com 3315634 56350
023135106 023135106 Amazon.com com 206580 2000
02906T107 02906T107 American Power Corp com 0 10000
031162100 031162100 Amgen, Inc. com 334035 1382
03209R103 03209R103 Amphastar Pharmaceuticals, Inc com 6682500 178200
032332504 032332504 Amtech Systems, Inc. com 1134306 118900
03237H101 03237H101 Amylyx Pharmaceuticals, Inc. com 1769349 60305
037833100 037833100 Apple, Inc. com 903526 5479
03820C105 03820C105 Applied Industrial com 2672044 18800
05350B100 05350B100 Avatar Ventures com 0 10000
05366Y201 05366Y201 Aviat Networks, Inc. com 3256711 94507
05367P100 05367P100 Avid Technology, Inc. com 2078700 65000
054540208 054540208 Axcelis Technologies com 36242534 271989
05465P101 05465P101 Axonics, Inc. com 5223574 95740
077347300 077347300 Bel Fuse, Inc. com 4565970 121500
077454106 077454106 Belden, Inc. com 8041188 92672
095306106 095306106 Blue Bird Corporation com 2600739 127300
099406100 099406100 Boot Barn Hldgs, Inc. com 3157568 41200
11373M107 11373M107 Brookline Bancorp, Inc. com 1578150 150300
125141101 125141101 CECO Environmental Corp. com 3114174 222600
126601103 126601103 CVD Equipment Corp. com 429590 32300
127055101 127055101 Cabot Corp. com 4625297 60351
127387108 127387108 Cadence Design System, Inc. com 3718593 17700
129500104 129500104 Caleres Inc. com 1245888 57600
13100M509 13100M509 Calix, Inc. com 3274349 61100
M20791105 M20791105 Camtek, Ltd. com 3336228 117680
14888U101 14888U101 Catalyst Pharmaceuticals, Inc. com 2443892 147400
171779309 171779309 Ciena Corporation com 6213379 118305
184496107 184496107 Clean Harbors, Inc. com 7247038 50835
18538R103 18538R103 Clearwater Paper Corp com 1888230 56500
205768302 205768302 Comstock Res com 2186315 202624
F21107101 F21107101 Constellium NV Cl A com 69581850 4553786
21240E105 21240E105 Controladora Vuela Comp de Avi com 231384 18600
227046109 227046109 Crocs, Inc. com 13320454 105350
23344D108 23344D108 Dada Nexus Limited com 2970531 350712
243537107 243537107 Deckers Outdoor Corp. com 12713274 28280
25065K104 25065K104 Destination XL Group, Inc. com 2262500 410617
268158201 268158201 Dynavax Technologies Corp. com 1735389 176900
302301106 302301106 EZCorp, Inc. com 3194900 371500
27032D304 27032D304 Earthstone Energy Inc. com 2496619 191900
532457108 532457108 Eli Lilly & Company com 209109 609
292218104 292218104 Employers Holdings, Inc. com 2413851 57900
30034T103 30034T103 Everi Hldgs, Inc. com 5167295 301300
30050B101 30050B101 Evolent Health, Inc. com 5442190 167710
30226D106 30226D106 Extreme Networks, Inc. com 3843120 201000
G3323L100 G3323L100 Fabrinet com 4767620 40145
313855108 313855108 Federal Signal Corp. com 3160443 58300
320817109 320817109 First Merchants Corporation com 1387195 42100
33768G107 33768G107 FirstCash Holdings, Inc com 2040918 21400
346375108 346375108 Formfactor Inc. com 3232775 101500
353469109 353469109 Franklin Covey Co. com 2623654 68200
353514102 353514102 Franklin Electric com 3246450 34500
359678109 359678109 Full House Resorts, Inc. com 1613324 223143
387328107 387328107 Granite Construction com 1951300 47500
400501102 400501102 Grupo Aeroportuario del Centro com 268530 3000
401617105 401617105 Guess, Inc com 1872052 96200
404030108 404030108 H&E Equipment Services, Inc. com 2468034 55800
405024100 405024100 Haemonetics Corp. com 3053475 36900
40637H109 40637H109 Halozyme Therapeutics, Inc. com 6264688 164040
413160102 413160102 Harmonic, Inc. com 2224975 152500
420877201 420877201 Haynes Intl, Inc. com 2549581 50900
42722X106 42722X106 Heritage Financial Corporation com 2052174 95896
428291108 428291108 Hexcel Corporation com 2361450 34600
44925C103 44925C103 ICF International, Inc. com 6954980 63400
453204109 453204109 Impinj, Inc. com 19823188 146275
M5425M103 M5425M103 Inmode Ltd. com 4122840 129000
45778Q107 45778Q107 Insperity, Inc. com 2321605 19100
457730109 457730109 Inspire Medical Systems, Inc. com 1392717 5950
458334109 458334109 Inter Parfums com 3470656 24400
46005L101 46005L101 International Money Express, I com 2366604 91800
Y41053102 Y41053102 International Seaways, Inc. com 2142352 51400
46625H100 46625H100 JP Morgan Chase & Company Inc. com 533204 4092
47103N106 47103N106 Janus International Group, Inc com 2090320 212000
478160104 478160104 Johnson & Johnson com 419729 2708
482497104 482497104 KE Holdings, Inc. com 753600 40000
482738101 482738101 KVH Industries, Inc. com 1035580 91000
50050N103 50050N103 Kontoor Brands, Inc. com 2240457 46300
50216C108 50216C108 LSI Industries Inc. com 2517151 180700
516544103 516544103 Lantheus Hldgs Inc. com 14740262 178540
525558201 525558201 LeMaitre Vascular, Inc. com 1477189 28700
53115L104 53115L104 Liberty Energy, Inc. com 1407819 109900
55305B101 55305B101 M/I Homes, Inc. com 1526778 24200
55303J106 55303J106 MGP Ingredients, Inc. com 3090204 31950
66981J102 66981J102 MINISO Group Holding Limited com 2249432 126800
553368101 553368101 MP Materials Corp. com 1482794 52600
55345K103 55345K103 MRC Global, Inc. com 1703916 175300
55405Y100 55405Y100 Macom Technology Solutions com 3124044 44100
559663109 559663109 Magnolia Oil & Gas Corp. com 1693512 77400
57636Q104 57636Q104 Mastercard, Inc. com 350688 965
576485205 576485205 Matador Resources Company com 1782110 37400
577933104 577933104 Maximus, Inc. com 3210960 40800
57776J100 57776J100 Maxlinear, Inc. Class A com 4945597 140460
580135101 580135101 McDonald's Corporation com 234745 840
587376104 587376104 Mercantile Bank Corp. com 1835833 60034
589889104 589889104 Merit Medical System Inc com 3239010 43800
594918104 594918104 Microsoft Corp. com 880757 3055
607525102 607525102 Model N, Inc. com 4894653 146240
607828100 607828100 Modine Mfg Co Com com 2208190 95800
609027107 609027107 Monarch Casino & Resort, Inc. com 2624910 35400
626755102 626755102 Murphy USA, Inc. com 1032200 4000
62955J103 62955J103 NOV, Inc. com 1674692 90475
64082B102 64082B102 NerdWallet, Inc. com 3716546 229700
64829B100 64829B100 New Relic, Inc. com 2205997 29300
651639106 651639106 Newmont Mining com 289046 5896
65441V101 65441V101 Nine Energy Service, Inc. com 1252112 225200
67000B104 67000B104 Novanta, Inc. com 1113630 7000
67098H104 67098H104 O-I Glass, Inc. com 2725200 120000
68287N100 68287N100 OneSpan, Inc. com 6322750 361300
68404L201 68404L201 Option Care Health Inc. com 3094398 97400
691497309 691497309 Oxford Inds, Inc. com 2597514 24600
69327R101 69327R101 PDC Energy, Inc. com 2564634 39960
703481101 703481101 Patterson-Uti Energy, Inc. com 1917560 163894
693282105 693282105 Pdf Solutions, Inc. com 1823200 43000
M78673114 M78673114 Perion Network, Ltd. com 15324189 387170
719405102 719405102 Photronics, Inc. com 2806994 169300
722304102 722304102 Pinduoduo Inc. com 1897500 25000
N70544106 N70544106 Playa Hotels & Resorts N.V. com 3678720 383200
740367404 740367404 Preferred Bank com 2822715 51500
747316107 747316107 Quaker Chemical Corporation com 2850480 14400
749552105 749552105 RF Industries Ltd. com 277640 63100
749660106 749660106 RPC, Inc. com 4727700 614785
761152107 761152107 Resmed Inc. com 317536 1450
774515100 774515100 Rocky Brands, Inc. com 832827 36100
78469C103 78469C103 SP Plus Corporation com 2976372 86800
78462F103 78462F103 SPDR S&P 500 ETF Trust com 1468357 3587
806037107 806037107 Scansource, Inc. com 2219076 72900
81282V100 81282V100 SeaWorld Entertainment Inc. com 4953848 80800
82489T104 82489T104 ShockWave Medical, Inc. com 1485286 6850
82982T106 82982T106 SiTime Corporation com 3100614 21800
826919102 826919102 Silicon Laboratories, Inc. com 3643623 20810
859241101 859241101 Sterling Construction Co., Inc com 3708452 97900
8676EP108 8676EP108 SunOpta, Inc. com 3240160 420800
87157D109 87157D109 Synaptics, Inc. com 4474899 40260
87357P100 87357P100 Tactile Sys Technology, Inc. com 4261811 259550
88034P109 88034P109 Tencent Music Entertainment com 1283400 155000
882681109 882681109 Texas Roadhouse com 1437198 13300
163086101 163086101 The Chefs Warehouse, Inc. com 3527580 103600
89417E109 89417E109 The Travelers Co., Inc. com 382054 2229
88830R101 88830R101 Titan Machinery, Inc. com 1830045 60100
888309101 888309101 Titan Oil & Gas, Inc. com 0 10000
131193104 131193104 Topgolf Callaway Brands Corp. com 2990046 138300
89377M109 89377M109 TransMedics Group, Inc. com 8201559 108300
89455T109 89455T109 Treace Medical Concepts, Inc. com 3886817 154300
91529Y106 91529Y106 UNUM Group com 2017560 51000
90385V107 90385V107 Ultra Clean Holdings com 4400332 132700
91336L107 91336L107 Univar Solutions, Inc. com 1807548 51600
92242T101 92242T101 V2X, Inc. com 3090216 77800
918284100 918284100 VSE Corp. com 1728650 38500
92337F107 92337F107 Veracyte, Inc. com 4731614 212180
923454102 923454102 Veritiv Corp. com 9120599 67490
92552R406 92552R406 Viad Corp. com 247704 11886
92835K103 92835K103 Vishay Precision Group com 2229984 53400
92839U206 92839U206 Visteon Corp. com 6179102 39400
931142103 931142103 Wal Mart Stores Inc. com 233932 1587
938824109 938824109 Washington Federal, Inc. com 1752984 58200
G48833118 G48833118 Weatherford International PLC com 1738955 29300
98401A106 98401A106 Xenacare Hldgs, Inc. com 0 140000
98956A105 98956A105 Zeta Global Holdings Corp. com 2310039 213300

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