Q1 2025 · 13F-HR
OBERWEIS ASSET MANAGEMENT INC/holdings as filed
Filed 2025-05-15 · accession 0001213900-25-043859
$2.01B
Reported value
192
Positions
2025-03-31
Period end
Holdings as filed
| CUSIP | Ticker | Issuer | Value | % port. | Shares | Class | Voting |
|---|---|---|---|---|---|---|---|
| 000899104 | ADMA | ADMA Biologics, Inc. | $68.0M | 3.39% | 3,426,260 | Common | SOLE |
| G25457105 | CRDO | Credo Technology Group | $50.6M | 2.52% | 1,259,915 | Common | SOLE |
| G8068L108 | SN | SharkNinja, Inc. | $41.7M | 2.08% | 500,160 | Common | SOLE |
| 29261A100 | EHC | Encompass Health Corporation | $37.5M | 1.87% | 370,720 | Common | SOLE |
| 26622P107 | DOCS | Doximity, Inc. | $33.9M | 1.69% | 584,060 | Common | SOLE |
| G037AX101 | AMBA | Ambarella, Inc. | $28.6M | 1.43% | 568,825 | Common | SOLE |
| 465741106 | ITRI | Itron Inc | $28.5M | 1.42% | 272,510 | Common | SOLE |
| 830879102 | SKYW | Skywest Inc | $27.9M | 1.39% | 319,150 | Common | SOLE |
| 946784105 | WAY | Waystar Holding Corp. | $26.6M | 1.33% | 713,040 | Common | SOLE |
| G3922B107 | G | Genpact Ltd. | $26.4M | 1.31% | 523,600 | Common | SOLE |
| 750917106 | RMBS | Rambus, Inc | $26.3M | 1.31% | 507,350 | Common | SOLE |
| 86333M108 | LRN | Stride, Inc. | $26.2M | 1.31% | 207,300 | Common | SOLE |
| 258278100 | DORM | Dorman Products, Inc. | $25.1M | 1.25% | 208,520 | Common | SOLE |
| 34354P105 | FLS | Flowserve Corporation | $25.1M | 1.25% | 513,184 | Common | SOLE |
| 98956A105 | ZETA | Zeta Global Holdings Corp. | $25.0M | 1.25% | 1,843,240 | Common | SOLE |
| H8088L103 | SRAD | Sportradar Group | $24.7M | 1.23% | 1,144,700 | Common | SOLE |
| 358054104 | FRSH | Freshworks, Inc. | $24.4M | 1.22% | 1,728,520 | Common | SOLE |
| 53190C102 | LTH | Life Time Holdings, Inc. | $24.1M | 1.20% | 797,000 | Common | SOLE |
| 55405Y100 | MTSI | Macom Technology Solutions | $23.3M | 1.16% | 232,520 | Common | SOLE |
| 35905A109 | FTDR | Frontdoor, Inc. | $23.0M | 1.15% | 599,460 | Common | SOLE |
| 92337F107 | VCYT | Veracyte, Inc. | $22.8M | 1.14% | 769,350 | Common | SOLE |
| 741623102 | PRMB | Primo Brands Corp. | $22.4M | 1.12% | 632,400 | Common | SOLE |
| 589889104 | MMSI | Merit Medical System Inc | $22.0M | 1.10% | 208,560 | Common | SOLE |
| 184496107 | CLH | Clean Harbors, Inc. | $21.7M | 1.08% | 110,320 | Common | SOLE |
| 44930G107 | ICUI | ICU Medical, Inc. | $21.6M | 1.08% | 155,690 | Common | SOLE |
| 03823U102 | AAOI | Applied Optoelectronics Inc. | $21.3M | 1.06% | 1,384,841 | Common | SOLE |
| 004498101 | ACIW | ACI Worldwide Inc. | $21.1M | 1.05% | 386,202 | Common | SOLE |
| M7516K103 | NVMI | Nova Ltd. | $20.5M | 1.02% | 111,000 | Common | SOLE |
| 07831C103 | BRBR | BellRing Brands, Inc. | $20.3M | 1.01% | 273,300 | Common | SOLE |
| 25402D102 | DOCN | Digital Ocean Holdings, Inc. | $19.6M | 0.98% | 586,500 | Common | SOLE |
| 671044105 | OSIS | Osi Systems, Inc. | $19.5M | 0.97% | 100,400 | Common | SOLE |
| 74736L109 | QTWO | Q2 Holdings, Inc. | $19.4M | 0.97% | 242,990 | Common | SOLE |
| 243537107 | DECK | Deckers Outdoor Corp. | $19.0M | 0.95% | 169,870 | Common | SOLE |
| 10316T104 | BOX | Box, Inc. | $18.4M | 0.92% | 597,100 | Common | SOLE |
| 589378108 | MRCY | Mercury Systems, Inc. | $17.8M | 0.89% | 412,300 | Common | SOLE |
| 62482R107 | 07WA | Mr. Cooper Group Inc. | $17.6M | 0.88% | 147,100 | Common | SOLE |
| 70202L102 | PSN | Parsons Corp. | $17.3M | 0.86% | 291,460 | Common | SOLE |
| 04621X108 | AIZ | Assurant, Inc. | $17.0M | 0.85% | 81,000 | Common | SOLE |
| 313855108 | FSS | Federal Signal Corp. | $16.9M | 0.84% | 229,830 | Common | SOLE |
| 204166102 | CVLT | Commvault Systems, Inc. | $16.9M | 0.84% | 107,000 | Common | SOLE |
| 364760108 | GAP | The Gap,Inc. | $16.9M | 0.84% | 817,600 | Common | SOLE |
| G3323L100 | FN | Fabrinet | $16.7M | 0.83% | 84,600 | Common | SOLE |
| 156504300 | CCS | Century Communities, Inc. | $16.6M | 0.83% | 248,000 | Common | SOLE |
| 85208M102 | SFM | Sprouts Farmers Markets LLC | $16.6M | 0.83% | 108,500 | Common | SOLE |
| 109194100 | BFAM | Bright Horizons Family Solutio | $16.5M | 0.82% | 129,904 | Common | SOLE |
| 18467V109 | YOU | Clear Secure, Inc. | $15.8M | 0.79% | 609,400 | Common | SOLE |
| 683344105 | ONTO | Onto Innovation, Inc. | $15.7M | 0.78% | 129,175 | Common | SOLE |
| 039653100 | ACA | Arcosa, Inc. | $15.7M | 0.78% | 203,000 | Common | SOLE |
| 38526M106 | LOPE | Grand Canyon Education, Inc. | $15.3M | 0.76% | 88,700 | Common | SOLE |
| 45245E109 | IMAX | Imax Corp. | $15.3M | 0.76% | 579,600 | Common | SOLE |
| 144285103 | CRS | Carpenter Technology Corp. | $14.7M | 0.74% | 81,411 | Common | SOLE |
| 141788109 | CARG | CarGurus, Inc. | $14.6M | 0.73% | 500,000 | Common | SOLE |
| 25659T107 | DLB | Dolby Laboratories, Inc. | $14.5M | 0.72% | 181,000 | Common | SOLE |
| 74164F103 | PRIM | Primoris Services Corp. | $13.9M | 0.70% | 242,900 | Common | SOLE |
| 705573103 | PEGA | Pegasystems Inc. | $13.6M | 0.68% | 195,400 | Common | SOLE |
| 26701L100 | BROS | Dutch Bros., Inc. | $13.5M | 0.67% | 219,000 | Common | SOLE |
| M2197Q107 | CLBT | Cellebrite DI Ltd. | $13.5M | 0.67% | 692,910 | Common | SOLE |
| 90385V107 | UCTT | Ultra Clean Holdings | $13.1M | 0.65% | 613,300 | Common | SOLE |
| 127055101 | CBT | Cabot Corp. | $12.7M | 0.63% | 152,800 | Common | SOLE |
| 000361105 | AIR | AAR Corp. | $12.3M | 0.61% | 220,000 | Common | SOLE |
| 030111207 | AMSC | American Superconductor | $12.1M | 0.60% | 668,200 | Common | SOLE |
| M20791105 | CAMT | Camtek, Ltd. | $11.7M | 0.58% | 199,980 | Common | SOLE |
| 68213N109 | OMCL | Omnicell, Inc. | $11.6M | 0.58% | 333,200 | Common | SOLE |
| 095306106 | BLBD | Blue Bird Corporation | $11.6M | 0.58% | 358,900 | Common | SOLE |
| 14888U101 | CPRX | Catalyst Pharmaceuticals, Inc. | $11.3M | 0.57% | 467,600 | Common | SOLE |
| 81663L200 | WGS | Genedx Holdings Corp. | $10.9M | 0.55% | 123,500 | Common | SOLE |
| 62955J103 | NOV | NOV, Inc. | $10.9M | 0.54% | 716,400 | Common | SOLE |
| 782011100 | RSI | Rush Street Interactive, Inc. | $10.6M | 0.53% | 991,900 | Common | SOLE |
| 200525103 | CBSH | Commerce Bancshares, Inc. | $10.4M | 0.52% | 167,790 | Common | SOLE |
| 302301106 | EZPW | EZCorp, Inc. | $10.1M | 0.50% | 685,500 | Common | SOLE |
| 904311107 | UAA | Under Armour, Inc. Class A | $10.0M | 0.50% | 1,593,200 | Common | SOLE |
| 338307101 | FIVN | Five9, Inc. | $10.0M | 0.50% | 366,600 | Common | SOLE |
| 78473E103 | SPXC | SPX Technologies, Inc. | $9.7M | 0.48% | 75,400 | Common | SOLE |
| 26603R106 | DUOL | Duolingo, Inc. | $9.6M | 0.48% | 31,000 | Common | SOLE |
| N70544106 | PL0 | Playa Hotels & Resorts N.V. | $9.4M | 0.47% | 705,100 | Common | SOLE |
| 42226A107 | HQY | HealthEquity Inc. | $9.4M | 0.47% | 105,900 | Common | SOLE |
| 559663109 | MGY | Magnolia Oil & Gas Corp. | $9.3M | 0.46% | 369,200 | Common | SOLE |
| 82706C108 | SIMO | Silicon Motion Techn ADR | $9.3M | 0.46% | 183,100 | Common | SOLE |
| 74758T303 | QLYS | Qualys, Inc. | $9.1M | 0.45% | 72,100 | Common | SOLE |
| 302081104 | EXLS | Exlservice Holdings | $9.0M | 0.45% | 190,800 | Common | SOLE |
| 576485205 | MTDR | Matador Resources Company | $9.0M | 0.45% | 175,300 | Common | SOLE |
| 94724R108 | WEAV | Weave Communications, Inc. | $8.6M | 0.43% | 779,200 | Common | SOLE |
| 04010E109 | AGX | Argan, Inc | $8.6M | 0.43% | 65,790 | Common | SOLE |
| 525558201 | LMAT | LeMaitre Vascular, Inc. | $8.6M | 0.43% | 102,065 | Common | SOLE |
| 501147102 | KRYS | Krystal Biotech, Inc. | $8.4M | 0.42% | 46,800 | Common | SOLE |
| 458665304 | TILE | Interface, Inc. | $8.4M | 0.42% | 425,300 | Common | SOLE |
| 33768G107 | FCFS | FirstCash Holdings, Inc | $8.4M | 0.42% | 70,100 | Common | SOLE |
| 68287N100 | OSPN | OneSpan, Inc. | $8.3M | 0.42% | 546,350 | Common | SOLE |
| 03076K108 | ABCB | Ameris Bancorp | $8.3M | 0.41% | 144,100 | Common | SOLE |
| 53263P105 | LMB | Limbach Hldgs, Inc. | $8.3M | 0.41% | 110,800 | Common | SOLE |
| 30052C107 | EOLS | Evolus, Inc. | $8.2M | 0.41% | 677,600 | Common | SOLE |
| 58502B106 | MD | Pediatrix Medical Group, Inc. | $7.9M | 0.39% | 545,600 | Common | SOLE |
| 39813G109 | GDYN | Grid Dynamics Holdings, Inc. | $7.9M | 0.39% | 503,000 | Common | SOLE |
| 83418M103 | SEI | Solaris Energy Infrastructur | $7.8M | 0.39% | 360,000 | Common | SOLE |
| P73684113 | OSW | OneSpaWorld Holdings Limited | $7.8M | 0.39% | 465,400 | Common | SOLE |
| 099406100 | BOOT | Boot Barn Hldgs, Inc. | $7.8M | 0.39% | 72,700 | Common | SOLE |
| 901109108 | TPC | Tutor Perini Corp. | $7.8M | 0.39% | 336,200 | Common | SOLE |
| G4740B105 | ICHR | Ichor Holdings Ltd. | $7.6M | 0.38% | 337,800 | Common | SOLE |
| 14167L103 | CDNA | CareDx, Inc. | $7.5M | 0.37% | 423,271 | Common | SOLE |
| 687793109 | OSCR | Oscar Health, Inc. | $7.5M | 0.37% | 568,330 | Common | SOLE |
| G27358103 | DESP1EUR | Despegar Com Corp. | $7.3M | 0.36% | 389,300 | Common | SOLE |
| 78463M107 | SPSC | SPS Comm Inc. | $7.3M | 0.36% | 54,800 | Common | SOLE |
| 320817109 | FRME | First Merchants Corporation | $7.2M | 0.36% | 178,400 | Common | SOLE |
| 92846Q107 | COCO | The Vita Coco Co., Inc. | $7.0M | 0.35% | 230,000 | Common | SOLE |
| 918284100 | VSEC | VSE Corp. | $7.0M | 0.35% | 58,600 | Common | SOLE |
| 04041L106 | ARISUSD | Aris Water Solutions, Inc. | $7.0M | 0.35% | 219,189 | Common | SOLE |
| 922280102 | VRNS | Varonis Sys, Inc. | $7.0M | 0.35% | 173,300 | Common | SOLE |
| 830940102 | SKWD | Skyward Specialty Ins Group | $7.0M | 0.35% | 131,600 | Common | SOLE |
| 00108J109 | ACMR | ACM Research, Inc. Class A | $6.9M | 0.35% | 296,948 | Common | SOLE |
| 45867G101 | IDCC | Interdigital, Inc. | $6.8M | 0.34% | 33,000 | Common | SOLE |
| 55305B101 | MHO | M/I Homes, Inc. | $6.6M | 0.33% | 58,200 | Common | SOLE |
| 09627Y109 | 2655787D | Blueprint Medicines Corp. | $6.6M | 0.33% | 75,000 | Common | SOLE |
| 33829M101 | FIVE | Five Below | $6.4M | 0.32% | 85,000 | Common | SOLE |
| 87043Q108 | SG | Sweetgreen, Inc. | $6.3M | 0.31% | 250,101 | Common | SOLE |
| 65406E102 | NIC | Nicolet Bankshares, Inc. | $6.0M | 0.30% | 55,200 | Common | SOLE |
| M81873107 | RDWR | Radware, Ltd. | $5.9M | 0.30% | 274,700 | Common | SOLE |
| 006739106 | ADUS | Addus Homecare Corp. | $5.9M | 0.30% | 59,900 | Common | SOLE |
| 73931J109 | AIOT | Powerfleet, Inc. | $5.9M | 0.29% | 1,068,800 | Common | SOLE |
| 56117J100 | MBUU | Malibu Boats, Inc. | $5.9M | 0.29% | 190,900 | Common | SOLE |
| 447462102 | HURN | Huron Consulting Group, Inc. | $5.8M | 0.29% | 40,500 | Common | SOLE |
| 497266106 | KEX | Kirby Corp. | $5.8M | 0.29% | 56,950 | Common | SOLE |
| 30257X104 | FBK | FB Financial Corp. | $5.7M | 0.29% | 123,500 | Common | SOLE |
| 05463X106 | AXGN | AxoGen Inc. | $5.6M | 0.28% | 300,500 | Common | SOLE |
| 264147109 | DCO | Ducommun Inc. | $5.6M | 0.28% | 95,700 | Common | SOLE |
| 09075A108 | BVS | Bioventus, Inc. | $5.5M | 0.27% | 601,714 | Common | SOLE |
| 749527107 | 1RG | Rev Group, Inc. | $5.5M | 0.27% | 172,600 | Common | SOLE |
| 63888U108 | NGVC | Natural Grocers by Vitamin Cot | $5.3M | 0.27% | 132,702 | Common | SOLE |
| G52694109 | KNSA | Kiniksa Pharmaceuticals, Ltd. | $5.3M | 0.26% | 237,200 | Common | SOLE |
| 12618T105 | CRAI | CRA Int'l Inc. | $5.2M | 0.26% | 30,000 | Common | SOLE |
| 92343x100 | — | Verint Sys Inc. | $4.9M | 0.24% | 274,100 | Common | SOLE |
| 04963C209 | ATRC | Atricure, Inc. | $4.9M | 0.24% | 151,500 | Common | SOLE |
| 56400P706 | MNKD | Mannkind Corp. | $4.9M | 0.24% | 968,400 | Common | SOLE |
| 292218104 | EIG | Employers Holdings, Inc. | $4.9M | 0.24% | 96,100 | Common | SOLE |
| 420261109 | HWKN | Hawkins, Inc. | $4.8M | 0.24% | 45,700 | Common | SOLE |
| 74874Q100 | QNST | QuinStreet, Inc. | $4.7M | 0.23% | 262,800 | Common | SOLE |
| 228903100 | AORT | Artivion, Inc | $4.7M | 0.23% | 190,400 | Common | SOLE |
| 24661P807 | DCTH | Delcath Systems, Inc. | $4.6M | 0.23% | 362,200 | Common | SOLE |
| 96924N100 | WLDN | Willdan Group Inc. | $4.5M | 0.22% | 110,100 | Common | SOLE |
| 311642102 | FARO | Faro Technologies, Inc. | $4.4M | 0.22% | 163,000 | Common | SOLE |
| 18538R103 | CLW | Clearwater Paper Corp | $4.4M | 0.22% | 175,200 | Common | SOLE |
| G6331P104 | AOSL | Alpha & Omega Semiconductor | $4.4M | 0.22% | 177,700 | Common | SOLE |
| 336901103 | SRCE | 1st Source Corp. | $4.4M | 0.22% | 73,500 | Common | SOLE |
| 00182C103 | ANIP | ANI Pharmaceuticals, Inc. | $4.4M | 0.22% | 65,600 | Common | SOLE |
| 053604104 | AVPT | AvePoint, Inc. | $4.3M | 0.21% | 296,300 | Common | SOLE |
| 039697107 | ARDX | Ardelyx, Inc. | $4.2M | 0.21% | 851,900 | Common | SOLE |
| 42330P107 | HLX | Helix Energy Solutions Group, | $4.2M | 0.21% | 501,700 | Common | SOLE |
| 53635D202 | LQDA | Liquidia Corp. | $3.7M | 0.18% | 250,900 | Common | SOLE |
| g4690m101 | — | IBEX Ltd. | $3.6M | 0.18% | 148,700 | Common | SOLE |
| 516806205 | 8LP1 | Vital Energy, Inc. | $3.6M | 0.18% | 168,700 | Common | SOLE |
| 749660106 | RES | RPC, Inc. | $3.5M | 0.17% | 629,169 | Common | SOLE |
| 75704L104 | RDVT | Red Violet, Inc. | $3.2M | 0.16% | 85,300 | Common | SOLE |
| 383082104 | GRC | The Gorman-Rupp Co. | $3.2M | 0.16% | 90,900 | Common | SOLE |
| 74022D407 | PDS | Precision Drilling Corp. | $3.2M | 0.16% | 68,400 | Common | SOLE |
| 859241101 | STRL | Sterling Construction Co., Inc | $3.1M | 0.15% | 27,300 | Common | SOLE |
| 533535100 | LINC | Lincoln EDL Svcs | $3.0M | 0.15% | 189,600 | Common | SOLE |
| 21900C308 | CRMD | CorMedix, Inc. | $3.0M | 0.15% | 485,000 | Common | SOLE |
| 50216C108 | LYTS | LSI Industries Inc. | $2.9M | 0.14% | 169,200 | Common | SOLE |
| 739128106 | POWL | Powell Industries Inc. | $2.9M | 0.14% | 16,800 | Common | SOLE |
| L8681T102 | SPOT | Spotify Technology S.A. | $2.8M | 0.14% | 5,000 | Common | SOLE |
| 576853105 | MTRX | Matrix Service Co. | $2.7M | 0.14% | 221,075 | Common | SOLE |
| 946760105 | CLMB | Climb Global Solutions, Inc. | $2.7M | 0.13% | 24,000 | Common | SOLE |
| 05637B105 | BLZE | Backblaze, Inc. | $2.6M | 0.13% | 538,700 | Common | SOLE |
| 535219109 | LIND | Lindblad Expeditions Holdings, | $2.5M | 0.12% | 266,000 | Common | SOLE |
| 55955D100 | MGNI | Magnite, Inc. | $2.3M | 0.12% | 205,700 | Common | SOLE |
| 127387108 | CDNS | Cadence Design System, Inc. | $1.9M | 0.09% | 7,300 | Common | SOLE |
| 81141R100 | SE | Sea Ltd | $1.5M | 0.07% | 11,500 | Common | SOLE |
| 78462F103 | SPY | SPDR S&P 500 ETF Trust | $1.2M | 0.06% | 2,163 | Common | NONE |
| 36118L106 | FUTU | Futu Holdings Ltd. | $1.2M | 0.06% | 11,400 | Common | SOLE |
| 722304102 | PDD | PDD Holdings Inc. ADR | $1.1M | 0.05% | 9,000 | Common | SOLE |
| 594918104 | MSFT | Microsoft Corp. | $1.0M | 0.05% | 2,685 | Common | NONE |
| 037833100 | AAPL | Apple, Inc. | $890,939 | 0.04% | 4,011 | Common | NONE |
| 46625H100 | JPM | JP Morgan Chase & Company Inc. | $862,871 | 0.04% | 3,518 | Common | NONE |
| 36165L108 | GDS | GDS Holdings Ltd. ADR | $696,575 | 0.03% | 27,500 | Common | SOLE |
| V5633W109 | MMYT | MakeMyTrip Ltd. | $622,237 | 0.03% | 6,350 | Common | SOLE |
| 35969L108 | YMM | Full Truck Alliance Co. Ltd. | $574,650 | 0.03% | 45,000 | Common | SOLE |
| 874080104 | TAL | Tal Education Group ADR | $528,400 | 0.03% | 40,000 | Common | SOLE |
| 89417E109 | TRV | The Travelers Co., Inc. | $506,437 | 0.03% | 1,915 | Common | NONE |
| G5509L101 | LIVN | LivaNova Plc | $425,599 | 0.02% | 10,835 | Common | NONE |
| 428050108 | HSAI | Hesai Group | $414,400 | 0.02% | 28,000 | Common | SOLE |
| 57636Q104 | MA | Mastercard, Inc. | $389,802 | 0.02% | 711 | Common | NONE |
| 478160104 | JNJ | Johnson & Johnson | $351,489 | 0.02% | 2,119 | Common | NONE |
| 761152107 | RMD | Resmed Inc. | $324,583 | 0.02% | 1,450 | Common | NONE |
| 031162100 | AMGN | Amgen, Inc. | $321,791 | 0.02% | 1,033 | Common | NONE |
| 02079k305 | — | Alphabet, Inc. Cl A | $293,816 | 0.01% | 1,900 | Common | NONE |
| 580135101 | MCD | McDonald's Corporation | $265,295 | 0.01% | 849 | Common | NONE |
| 02079k107 | — | Alphabet, Inc. Cl C | $253,093 | 0.01% | 1,620 | Common | NONE |
| 064058100 | BK | Bank of New York Mellon Corp. | $247,062 | 0.01% | 2,946 | Common | NONE |
| 931142103 | WMT | Wal Mart Stores Inc. | $228,764 | 0.01% | 2,606 | Common | NONE |
| 001055102 | AFL | Aflac Inc. | $222,380 | 0.01% | 2,000 | Common | NONE |
| 90114C107 | TUYA | Tuya, Inc. ADS | $99,990 | 0.00% | 33,000 | Common | SOLE |
| 90138A103 | VNET | VNET Group, Inc. - ADR | $82,000 | 0.00% | 10,000 | Common | SOLE |
| 98401A106 | — | Xenacare Hldgs, Inc. | $0 | — | 140,000 | Common | NONE |
Source: SEC EDGAR · raw 13F holdings as filed. The Class column shows the option type when reported (Put/Call) or Common when the issuer's equity is held directly. 13F discloses long positions only.