Q4 2025 · 13F-HR
OBERWEIS ASSET MANAGEMENT INC/holdings as filed
Filed 2026-02-17 · accession 0001213900-26-017101
$2.73B
Reported value
179
Positions
2025-12-31
Period end
The Brief · OBERWEIS ASSET MANAGEMENT INC/ · Q4 2025
AI · grounded in 13F
OBERWEIS ASSET MANAGEMENT INC/ exited its position in ADMA for a reduction of $39.76M. The fund also closed positions in SRAD and ITRI, reducing holdings by $37.10M and $35.39M respectively. On the buy side, the manager established new positions in GMED for $23.57M and ARQT for $23.48M.
Holdings as filed
| CUSIP | Ticker | Issuer | Value | % port. | Shares | Class | Voting |
|---|---|---|---|---|---|---|---|
| 55024U109 | LITE | Lumentum Hldgs, Inc. | $103.5M | 3.79% | 280,930 | Common | SOLE |
| G25457105 | CRDO | Credo Technology Group | $97.2M | 3.55% | 675,388 | Common | SOLE |
| 03823U102 | AAOI | Applied Optoelectronics Inc. | $71.1M | 2.60% | 2,039,641 | Common | SOLE |
| G8068L108 | SN | SharkNinja, Inc. | $58.9M | 2.15% | 526,310 | Common | SOLE |
| G037AX101 | AMBA | Ambarella, Inc. | $43.8M | 1.60% | 617,860 | Common | SOLE |
| 750917106 | RMBS | Rambus, Inc | $42.5M | 1.55% | 462,100 | Common | SOLE |
| 830879102 | SKYW | Skywest Inc | $38.4M | 1.40% | 382,220 | Common | SOLE |
| 29261A100 | EHC | Encompass Health Corporation | $38.1M | 1.39% | 358,971 | Common | SOLE |
| 82982T106 | SITM | SiTime Corporation | $37.6M | 1.37% | 106,396 | Common | SOLE |
| 25402D102 | DOCN | Digital Ocean Holdings, Inc. | $37.5M | 1.37% | 778,830 | Common | SOLE |
| M7516K103 | NVMI | Nova Ltd. | $37.2M | 1.36% | 113,285 | Common | SOLE |
| 35905A109 | FTDR | Frontdoor, Inc. | $35.2M | 1.29% | 610,860 | Common | SOLE |
| 10950A106 | BTSG | BrightSpring Health Services | $34.0M | 1.24% | 908,000 | Common | SOLE |
| 55405Y100 | MTSI | Macom Technology Solutions | $30.7M | 1.12% | 178,960 | Common | SOLE |
| 92337F107 | VCYT | Veracyte, Inc. | $30.6M | 1.12% | 726,740 | Common | SOLE |
| 589378108 | MRCY | Mercury Systems, Inc. | $30.2M | 1.11% | 414,040 | Common | SOLE |
| 34354P105 | FLS | Flowserve Corporation | $28.4M | 1.04% | 409,941 | Common | SOLE |
| 53190C102 | LTH | Life Time Holdings, Inc. | $28.2M | 1.03% | 1,059,300 | Common | SOLE |
| 946784105 | WAY | Waystar Holding Corp. | $27.5M | 1.01% | 840,600 | Common | SOLE |
| 782011100 | RSI | Rush Street Interactive, Inc. | $27.4M | 1.00% | 1,411,710 | Common | SOLE |
| 184496107 | CLH | Clean Harbors, Inc. | $27.4M | 1.00% | 116,870 | Common | SOLE |
| 144285103 | CRS | Carpenter Technology Corp. | $26.0M | 0.95% | 82,611 | Common | SOLE |
| 901109108 | TPC | Tutor Perini Corp. | $26.0M | 0.95% | 387,200 | Common | SOLE |
| 671044105 | OSIS | Osi Systems, Inc. | $25.9M | 0.95% | 101,400 | Common | SOLE |
| 81663L200 | WGS | Genedx Holdings Corp. | $25.9M | 0.95% | 198,770 | Common | SOLE |
| 705573103 | PEGA | Pegasystems Inc. | $25.4M | 0.93% | 424,840 | Common | SOLE |
| 358054104 | FRSH | Freshworks, Inc. | $25.2M | 0.92% | 2,054,470 | Common | SOLE |
| 26701L100 | BROS | Dutch Bros., Inc. | $24.8M | 0.91% | 404,500 | Common | SOLE |
| G3922B107 | G | Genpact Ltd. | $24.4M | 0.89% | 521,602 | Common | SOLE |
| 74736L109 | QTWO | Q2 Holdings, Inc. | $24.3M | 0.89% | 336,860 | Common | SOLE |
| 45245E109 | IMAX | Imax Corp. | $24.1M | 0.88% | 652,300 | Common | SOLE |
| 030111207 | AMSC | American Superconductor | $24.1M | 0.88% | 835,900 | Common | SOLE |
| 44930G107 | ICUI | ICU Medical, Inc. | $24.0M | 0.88% | 168,040 | Common | SOLE |
| 589889104 | MMSI | Merit Medical System Inc | $23.7M | 0.87% | 268,760 | Common | SOLE |
| 379577208 | GMED | Globus Medical, Inc.-A | $23.6M | 0.86% | 270,000 | Common | SOLE |
| 039653100 | ACA | Arcosa, Inc. | $23.6M | 0.86% | 221,600 | Common | SOLE |
| 03969K108 | ARQT | Arcutis Biotherapeutics, Inc. | $23.5M | 0.86% | 808,400 | Common | SOLE |
| M20791105 | CAMT | Camtek, Ltd. | $23.3M | 0.85% | 218,880 | Common | SOLE |
| 518415104 | LSCC | Lattice Semiconductor Corporat | $23.2M | 0.85% | 314,636 | Common | SOLE |
| 000361105 | AIR | AAR Corp. | $22.6M | 0.83% | 272,700 | Common | SOLE |
| 300426103 | ECG | Everus Construction Group | $22.2M | 0.81% | 259,800 | Common | SOLE |
| 82706C108 | SIMO | Silicon Motion Techn ADR | $21.9M | 0.80% | 236,300 | Common | SOLE |
| 917047102 | URBN | Urban Outfitters, Inc. | $21.6M | 0.79% | 286,400 | Common | SOLE |
| 02553E106 | AEO | American Eagle Outfitters | $21.5M | 0.79% | 814,500 | Common | SOLE |
| 450056106 | IRTC | Irhythm Holdings, Inc. | $21.2M | 0.78% | 119,700 | Common | SOLE |
| 02081G201 | ATEC | Alphatec Hldgs Inc. | $21.0M | 0.77% | 1,000,400 | Common | SOLE |
| 650111107 | NYT | New York Times Co. Cl A | $21.0M | 0.77% | 302,700 | Common | SOLE |
| 33768G107 | FCFS | FirstCash Holdings, Inc | $20.9M | 0.77% | 131,300 | Common | SOLE |
| 52736R102 | LEVI | Levi Strauss & Co. | $20.6M | 0.75% | 993,900 | Common | SOLE |
| 74164F103 | PRIM | Primoris Services Corp. | $20.3M | 0.74% | 163,300 | Common | SOLE |
| 63845R107 | EYE | National Vision Holdings, Inc. | $20.3M | 0.74% | 784,500 | Common | SOLE |
| 04621X108 | AIZ | Assurant, Inc. | $20.0M | 0.73% | 83,000 | Common | SOLE |
| 141788109 | CARG | CarGurus, Inc. | $19.9M | 0.73% | 518,400 | Common | SOLE |
| 10316T104 | BOX | Box, Inc. | $19.5M | 0.71% | 652,320 | Common | SOLE |
| 235825205 | DAN | Dana Inc. | $18.9M | 0.69% | 796,500 | Common | SOLE |
| 453204109 | PI | Impinj, Inc. | $18.6M | 0.68% | 107,120 | Common | SOLE |
| 313855108 | FSS | Federal Signal Corp. | $18.1M | 0.66% | 166,500 | Common | SOLE |
| 095306106 | BLBD | Blue Bird Corporation | $18.0M | 0.66% | 382,638 | Common | SOLE |
| 81725T100 | SXT | Sensient Technologies Corp. | $17.7M | 0.65% | 188,000 | Common | SOLE |
| G3934V109 | GENI | Genius Sports Ltd. | $17.5M | 0.64% | 1,585,900 | Common | SOLE |
| 20337X109 | VISN | Vistance Networks, Inc. | $17.4M | 0.64% | 960,912 | Common | SOLE |
| 83418M103 | SEI | Solaris Energy Infrastructur | $16.9M | 0.62% | 366,900 | Common | SOLE |
| 38526M106 | LOPE | Grand Canyon Education, Inc. | $16.6M | 0.61% | 99,800 | Common | SOLE |
| 90385V107 | UCTT | Ultra Clean Holdings | $15.9M | 0.58% | 628,500 | Common | SOLE |
| 004498101 | ACIW | ACI Worldwide Inc. | $15.8M | 0.58% | 330,702 | Common | SOLE |
| 218937100 | CNR | Core Natural Resources, Inc. | $15.8M | 0.58% | 178,400 | Common | SOLE |
| 537008104 | LFUS | Littelfuse, Inc. | $15.8M | 0.58% | 62,300 | Common | SOLE |
| 98956A105 | ZETA | Zeta Global Holdings Corp. | $15.6M | 0.57% | 767,020 | Common | SOLE |
| 739128106 | POWL | Powell Industries Inc. | $15.5M | 0.57% | 48,700 | Common | SOLE |
| 78473E103 | SPXC | SPX Technologies, Inc. | $15.4M | 0.56% | 76,900 | Common | SOLE |
| G4766E116 | INDV | Indivior Plc | $15.2M | 0.56% | 424,941 | Common | SOLE |
| G8588X103 | SGHC | Super Group SGHC Ltd. | $15.2M | 0.55% | 1,268,500 | Common | SOLE |
| 00182C103 | ANIP | ANI Pharmaceuticals, Inc. | $14.9M | 0.55% | 188,830 | Common | SOLE |
| 01625V104 | ALHC | Alighnment Healthcare, Inc. | $14.8M | 0.54% | 747,500 | Common | SOLE |
| 74758T303 | QLYS | Qualys, Inc. | $14.3M | 0.52% | 107,800 | Common | SOLE |
| 60471A101 | MIR | Mirion Technologies, Inc. | $14.2M | 0.52% | 607,800 | Common | SOLE |
| 204166102 | CVLT | Commvault Systems, Inc. | $13.9M | 0.51% | 110,900 | Common | SOLE |
| 75960P104 | RELY | Remitly Global, Inc. | $13.8M | 0.51% | 1,002,800 | Common | SOLE |
| 14888U101 | CPRX | Catalyst Pharmaceuticals, Inc. | $13.7M | 0.50% | 586,970 | Common | SOLE |
| 65487K100 | LASR | nLIGHT Inc. | $13.4M | 0.49% | 356,400 | Common | SOLE |
| G5509L101 | LIVN | LivaNova Plc | $13.1M | 0.48% | 212,300 | Common | SOLE |
| 23834J201 | DAVE | Dave, Inc. | $13.0M | 0.48% | 58,922 | Common | SOLE |
| 42226A107 | HQY | HealthEquity Inc. | $13.0M | 0.47% | 141,580 | Common | SOLE |
| 13100M509 | CALX | Calix, Inc. | $12.9M | 0.47% | 244,600 | Common | SOLE |
| G52694109 | KNSA | Kiniksa Pharmaceuticals, Ltd. | $12.9M | 0.47% | 312,800 | Common | SOLE |
| 92846Q107 | COCO | The Vita Coco Co., Inc. | $12.4M | 0.45% | 233,400 | Common | SOLE |
| 98983L108 | ZWS | Zurn Elkay Water Solutions Cor | $12.4M | 0.45% | 266,000 | Common | SOLE |
| 302301106 | EZPW | EZCorp, Inc. | $12.2M | 0.45% | 627,900 | Common | SOLE |
| 458665304 | TILE | Interface, Inc. | $12.2M | 0.44% | 435,800 | Common | SOLE |
| 830940102 | SKWD | Skyward Specialty Ins Group | $12.1M | 0.44% | 237,500 | Common | SOLE |
| 00650F109 | ADPT | Adaptive Biotechnologies | $12.1M | 0.44% | 744,500 | Common | SOLE |
| 58502B106 | MD | Pediatrix Medical Group, Inc. | $12.0M | 0.44% | 559,987 | Common | SOLE |
| 03076K108 | ABCB | Ameris Bancorp | $11.6M | 0.42% | 156,400 | Common | SOLE |
| G3323L100 | FN | Fabrinet | $11.5M | 0.42% | 25,200 | Common | SOLE |
| 53635D202 | LQDA | Liquidia Corp. | $11.4M | 0.42% | 329,200 | Common | SOLE |
| 90041L105 | TPB | Turning PT Brands, Inc. | $11.2M | 0.41% | 103,500 | Common | SOLE |
| 05463X106 | AXGN | AxoGen Inc. | $11.0M | 0.40% | 336,200 | Common | SOLE |
| 98139A105 | WK | Workiva, Inc. | $11.0M | 0.40% | 127,500 | Common | SOLE |
| 576485205 | MTDR | Matador Resources Company | $10.8M | 0.39% | 253,900 | Common | SOLE |
| 04010E109 | AGX | Argan, Inc | $10.3M | 0.38% | 32,971 | Common | SOLE |
| 55955D100 | MGNI | Magnite, Inc. | $10.3M | 0.38% | 635,800 | Common | SOLE |
| 228903100 | AORT | Artivion, Inc | $9.9M | 0.36% | 217,060 | Common | SOLE |
| P73684113 | OSW | OneSpaWorld Holdings Limited | $9.9M | 0.36% | 476,890 | Common | SOLE |
| 39304D102 | GDOT | Green Dot Corp. Cl A | $9.8M | 0.36% | 765,000 | Common | SOLE |
| 294268107 | PLUS | EPlus, Inc. | $9.7M | 0.36% | 110,898 | Common | SOLE |
| 55305B101 | MHO | M/I Homes, Inc. | $9.6M | 0.35% | 75,000 | Common | SOLE |
| 099406100 | BOOT | Boot Barn Hldgs, Inc. | $9.5M | 0.35% | 53,800 | Common | SOLE |
| 525558201 | LMAT | LeMaitre Vascular, Inc. | $9.4M | 0.34% | 116,301 | Common | SOLE |
| 21900C308 | CRMD | CorMedix, Inc. | $9.4M | 0.34% | 805,115 | Common | SOLE |
| 264147109 | DCO | Ducommun Inc. | $9.3M | 0.34% | 98,100 | Common | SOLE |
| g4690m101 | — | IBEX Ltd. | $9.2M | 0.34% | 241,800 | Common | SOLE |
| 925550105 | VIAV | Viavi Solutions, Inc. | $9.1M | 0.33% | 508,100 | Common | SOLE |
| 74347M108 | PUMP | ProPetro Holding Corp. | $9.0M | 0.33% | 947,900 | Common | SOLE |
| 45867G101 | IDCC | Interdigital, Inc. | $9.0M | 0.33% | 28,300 | Common | SOLE |
| 30257X104 | FBK | FB Financial Corp. | $8.9M | 0.32% | 159,200 | Common | SOLE |
| 125141101 | CECO | CECO Environmental Corp. | $8.7M | 0.32% | 145,508 | Common | SOLE |
| 04963C209 | ATRC | Atricure, Inc. | $8.6M | 0.32% | 217,992 | Common | SOLE |
| 08160H101 | BHE | Benchmark Electronics Inc | $8.5M | 0.31% | 198,300 | Common | SOLE |
| 006739106 | ADUS | Addus Homecare Corp. | $8.4M | 0.31% | 78,200 | Common | SOLE |
| 749527107 | 1RG | Rev Group, Inc. | $8.4M | 0.31% | 137,800 | Common | SOLE |
| 007973100 | AEIS | Advanced Energy Industry, Inc. | $8.3M | 0.30% | 39,700 | Common | SOLE |
| 559663109 | MGY | Magnolia Oil & Gas Corp. | $8.2M | 0.30% | 376,300 | Common | SOLE |
| 120076104 | BBW | Build A Bear | $8.2M | 0.30% | 134,100 | Common | SOLE |
| 40637H109 | HALO | Halozyme Therapeutics, Inc. | $7.9M | 0.29% | 117,580 | Common | SOLE |
| 71742Q106 | PAHC | Phibro Animal Health Corp | $7.8M | 0.29% | 209,800 | Common | SOLE |
| 30049H102 | EVLV | Evolv Technologies Holdings | $7.7M | 0.28% | 1,077,900 | Common | SOLE |
| 94724R108 | WEAV | Weave Communications, Inc. | $7.6M | 0.28% | 999,080 | Common | SOLE |
| 254543101 | DIOD | Diodes, Inc. | $7.5M | 0.27% | 151,900 | Common | SOLE |
| 65406E102 | NIC | Nicolet Bankshares, Inc. | $7.5M | 0.27% | 61,700 | Common | SOLE |
| 533535100 | LINC | Lincoln EDL Svcs | $7.5M | 0.27% | 309,100 | Common | SOLE |
| 320817109 | FRME | First Merchants Corporation | $7.3M | 0.27% | 196,000 | Common | SOLE |
| 29772L108 | ETON | Eton Pharmaceuticals, Inc. | $7.3M | 0.27% | 431,300 | Common | SOLE |
| 12618T105 | CRAI | CRA Int'l Inc. | $7.2M | 0.26% | 35,770 | Common | SOLE |
| 447462102 | HURN | Huron Consulting Group, Inc. | $7.2M | 0.26% | 41,500 | Common | SOLE |
| 74022D407 | PDS | Precision Drilling Corp. | $7.2M | 0.26% | 99,500 | Common | SOLE |
| 31188V100 | FSLY | Fastly, Inc. | $7.0M | 0.26% | 689,800 | Common | SOLE |
| 56117J100 | MBUU | Malibu Boats, Inc. | $6.9M | 0.25% | 244,100 | Common | SOLE |
| M81873107 | RDWR | Radware, Ltd. | $6.8M | 0.25% | 281,500 | Common | SOLE |
| 420261109 | HWKN | Hawkins, Inc. | $6.6M | 0.24% | 46,800 | Common | SOLE |
| M7S64l123 | — | Pagaya Technologies Ltd. | $6.4M | 0.23% | 305,600 | Common | SOLE |
| 651718504 | NPKI | NPK International, Inc. | $6.1M | 0.22% | 508,750 | Common | SOLE |
| N3144W105 | XPRO | Expro Group Holdings N.V. | $6.0M | 0.22% | 446,300 | Common | SOLE |
| 22266M104 | COUR | Coursera, Inc. | $5.9M | 0.22% | 806,800 | Common | SOLE |
| 75704L104 | RDVT | Red Violet, Inc. | $5.9M | 0.21% | 102,800 | Common | SOLE |
| 73931J109 | AIOT | Powerfleet, Inc. | $5.8M | 0.21% | 1,095,252 | Common | SOLE |
| 87357P100 | TCMD | Tactile Sys Technology, Inc. | $5.8M | 0.21% | 199,100 | Common | SOLE |
| 918284100 | VSEC | VSE Corp. | $5.8M | 0.21% | 33,400 | Common | SOLE |
| 946760105 | CLMB | Climb Global Solutions, Inc. | $5.3M | 0.20% | 51,960 | Common | SOLE |
| 336901103 | SRCE | 1st Source Corp. | $5.3M | 0.19% | 84,700 | Common | SOLE |
| 09075A108 | BVS | Bioventus, Inc. | $4.6M | 0.17% | 616,614 | Common | SOLE |
| 383082104 | GRC | The Gorman-Rupp Co. | $4.5M | 0.16% | 93,200 | Common | SOLE |
| 535219109 | LIND | Lindblad Expeditions Holdings, | $4.4M | 0.16% | 306,800 | Common | SOLE |
| 50216C108 | LYTS | LSI Industries Inc. | $3.2M | 0.12% | 173,400 | Common | SOLE |
| 576853105 | MTRX | Matrix Service Co. | $2.7M | 0.10% | 226,575 | Common | SOLE |
| 05637B105 | BLZE | Backblaze, Inc. | $2.6M | 0.09% | 552,023 | Common | SOLE |
| 82509L107 | SHOP | Shopify, Inc. | $2.1M | 0.08% | 13,100 | Common | SOLE |
| 36118L106 | FUTU | Futu Holdings Ltd. | $1.8M | 0.07% | 11,000 | Common | SOLE |
| 78462F103 | SPY | SPDR S&P 500 ETF Trust | $1.4M | 0.05% | 2,055 | Common | NONE |
| 594918104 | MSFT | Microsoft Corp. | $1.3M | 0.05% | 2,665 | Common | NONE |
| 595112103 | MU | Micron Technology | $1.3M | 0.05% | 4,500 | Common | SOLE |
| 44332N106 | HTHT | H World Group Ltd. | $1.1M | 0.04% | 24,000 | Common | SOLE |
| 46625H100 | JPM | JP Morgan Chase & Company Inc. | $983,387 | 0.04% | 3,052 | Common | NONE |
| 037833100 | AAPL | Apple, Inc. | $944,879 | 0.03% | 3,476 | Common | NONE |
| 02079k305 | — | Alphabet, Inc. Cl A | $594,721 | 0.02% | 1,900 | Common | NONE |
| 02079k107 | — | Alphabet, Inc. Cl C | $508,356 | 0.02% | 1,620 | Common | NONE |
| 89417E109 | TRV | The Travelers Co., Inc. | $458,603 | 0.02% | 1,581 | Common | NONE |
| 478160104 | JNJ | Johnson & Johnson | $424,199 | 0.02% | 2,050 | Common | NONE |
| 57636Q104 | MA | Mastercard, Inc. | $377,663 | 0.01% | 662 | Common | NONE |
| 761152107 | RMD | Resmed Inc. | $349,262 | 0.01% | 1,450 | Common | NONE |
| 031162100 | AMGN | Amgen, Inc. | $338,811 | 0.01% | 1,035 | Common | NONE |
| 064058100 | BK | Bank of New York Mellon Corp. | $296,327 | 0.01% | 2,553 | Common | NONE |
| 651639106 | NEM | Newmont Mining | $286,887 | 0.01% | 2,873 | Common | NONE |
| 949746804 | WFC 7.5 PERP L | Wells Fargo Co New Perp Pfd | $272,700 | 0.01% | 225 | Common | NONE |
| 78463V107 | GLD | SPDR Gold Shares ETF | $267,509 | 0.01% | 675 | Common | NONE |
| 580135101 | MCD | McDonald's Corporation | $260,783 | 0.01% | 853 | Common | NONE |
| 149123101 | CAT | Caterpillar, Inc. | $256,365 | 0.01% | 448 | Common | NONE |
| 931142103 | WMT | Wal Mart Stores Inc. | $243,614 | 0.01% | 2,187 | Common | NONE |
| 001055102 | AFL | Aflac Inc. | $220,540 | 0.01% | 2,000 | Common | NONE |
| 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.