OBERWEIS ASSET MANAGEMENT INC/ - Stock Holdings in 13F Filings (SEC)
Updated on March 15, 2026.
Based on 13F Filings filed with the SEC on February 17, 2026, for the 2025 Q4 period, OBERWEIS ASSET MANAGEMENT INC/ held in its portfolio 179 assets valued at $2,734,878,641 (i.e. $2.74B).
The most valuable assets in the portfolio included: Lumentum Hldgs, Inc. ($103.55M), Credo Technology Group ($97.18M), and Applied Optoelectronics Inc. ($71.10M).
The chart below shows the top 10 valuable assets, and the table below shows the top 179 valuable assets.
You can see similar for other investment managers.
Related Topics: SEC Topic List.
Data Source: SEC.
OBERWEIS ASSET MANAGEMENT INC/ - Stock Holdings in 13F Filings (SEC)
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| Name of Issuer | No. of Shares | Value ($) | Class |
|---|---|---|---|
| Lumentum Hldgs, Inc. | 280930 | 103547989 | COM |
| Credo Technology Group | 675388 | 97181579 | COM |
| Applied Optoelectronics Inc. | 2039641 | 71101885 | COM |
| SharkNinja, Inc. | 526310 | 58894089 | COM |
| Ambarella, Inc. | 617860 | 43769202 | COM |
| Rambus, Inc | 462100 | 42462369 | COM |
| Skywest Inc | 382220 | 38378710 | COM |
| Encompass Health Corporation | 358971 | 38101223 | COM |
| SiTime Corporation | 106396 | 37578003 | COM |
| Digital Ocean Holdings, Inc. | 778830 | 37477300 | COM |
| Nova Ltd. | 113285 | 37201661 | COM |
| Frontdoor, Inc. | 610860 | 35240513 | COM |
| BrightSpring Health Services | 908000 | 34004600 | COM |
| Macom Technology Solutions | 178960 | 30652269 | COM |
| Veracyte, Inc. | 726740 | 30595754 | COM |
| Mercury Systems, Inc. | 414040 | 30229060 | COM |
| Flowserve Corporation | 409941 | 28441733 | COM |
| Life Time Holdings, Inc. | 1059300 | 28156194 | COM |
| Waystar Holding Corp. | 840600 | 27529650 | COM |
| Rush Street Interactive, Inc. | 1411710 | 27429525 | COM |
| Clean Harbors, Inc. | 116870 | 27403678 | COM |
| Carpenter Technology Corp. | 82611 | 26009318 | COM |
| Tutor Perini Corp. | 387200 | 25950144 | COM |
| Osi Systems, Inc. | 101400 | 25863084 | COM |
| Genedx Holdings Corp. | 198770 | 25852026 | COM |
| Pegasystems Inc. | 424840 | 25371445 | COM |
| Freshworks, Inc. | 2054470 | 25167258 | COM |
| Dutch Bros., Inc. | 404500 | 24763490 | COM |
| Genpact Ltd. | 521602 | 24400547 | COM |
| Q2 Holdings, Inc. | 336860 | 24307818 | COM |
| Imax Corp. | 652300 | 24109008 | COM |
| American Superconductor | 835900 | 24057202 | COM |
| ICU Medical, Inc. | 168040 | 23974267 | COM |
| Merit Medical System Inc | 268760 | 23688506 | COM |
| Globus Medical, Inc.-A | 270000 | 23573700 | COM |
| Arcosa, Inc. | 221600 | 23560512 | COM |
| Arcutis Biotherapeutics, Inc. | 808400 | 23475936 | COM |
| Camtek, Ltd. | 218880 | 23276794 | COM |
| Lattice Semiconductor Corporat | 314636 | 23150917 | COM |
| AAR Corp. | 272700 | 22576833 | COM |
| Everus Construction Group | 259800 | 22228488 | COM |
| Silicon Motion Techn ADR | 236300 | 21905010 | COM |
| Urban Outfitters, Inc. | 286400 | 21554464 | COM |
| American Eagle Outfitters | 814500 | 21478365 | COM |
| Irhythm Holdings, Inc. | 119700 | 21239568 | COM |
| Alphatec Hldgs Inc. | 1000400 | 21048416 | COM |
| New York Times Co. Cl A | 302700 | 21013434 | COM |
| FirstCash Holdings, Inc | 131300 | 20926594 | COM |
| Levi Strauss & Co. | 993900 | 20613486 | COM |
| Primoris Services Corp. | 163300 | 20272062 | COM |
| National Vision Holdings, Inc. | 784500 | 20255790 | COM |
| Assurant, Inc. | 83000 | 19990550 | COM |
| CarGurus, Inc. | 518400 | 19880640 | COM |
| Box, Inc. | 652320 | 19510891 | COM |
| Dana Inc. | 796500 | 18924840 | COM |
| Impinj, Inc. | 107120 | 18639951 | COM |
| Federal Signal Corp. | 166500 | 18080235 | COM |
| Blue Bird Corporation | 382638 | 17983986 | COM |
| Sensient Technologies Corp. | 188000 | 17662600 | COM |
| Genius Sports Ltd. | 1585900 | 17476618 | COM |
| Vistance Networks, Inc. | 960912 | 17421335 | COM |
| Solaris Energy Infrastructur | 366900 | 16866393 | COM |
| Grand Canyon Education, Inc. | 99800 | 16597738 | COM |
| Ultra Clean Holdings | 628500 | 15919905 | COM |
| ACI Worldwide Inc. | 330702 | 15810863 | COM |
| Core Natural Resources, Inc. | 178400 | 15790184 | COM |
| Littelfuse, Inc. | 62300 | 15756916 | COM |
| Zeta Global Holdings Corp. | 767020 | 15608857 | COM |
| Powell Industries Inc. | 48700 | 15524586 | COM |
| SPX Technologies, Inc. | 76900 | 15384614 | COM |
| Indivior Plc | 424941 | 15246883 | COM |
| Super Group SGHC Ltd. | 1268500 | 15158575 | COM |
| ANI Pharmaceuticals, Inc. | 188830 | 14906240 | COM |
| Alighnment Healthcare, Inc. | 747500 | 14763125 | COM |
| Qualys, Inc. | 107800 | 14326620 | COM |
| Mirion Technologies, Inc. | 607800 | 14234676 | COM |
| Commvault Systems, Inc. | 110900 | 13902424 | COM |
| Remitly Global, Inc. | 1002800 | 13838640 | COM |
| Catalyst Pharmaceuticals, Inc. | 586970 | 13699880 | COM |
| nLIGHT Inc. | 356400 | 13368564 | COM |
| LivaNova Plc | 212300 | 13062819 | COM |
| Dave, Inc. | 58922 | 13045920 | COM |
| HealthEquity Inc. | 141580 | 12970144 | COM |
| Calix, Inc. | 244600 | 12946678 | COM |
| Kiniksa Pharmaceuticals, Ltd. | 312800 | 12903000 | COM |
| The Vita Coco Co., Inc. | 233400 | 12372534 | COM |
| Zurn Elkay Water Solutions Cor | 266000 | 12366340 | COM |
| EZCorp, Inc. | 627900 | 12193818 | COM |
| Interface, Inc. | 435800 | 12167536 | COM |
| Skyward Specialty Ins Group | 237500 | 12138625 | COM |
| Adaptive Biotechnologies | 744500 | 12090680 | COM |
| Pediatrix Medical Group, Inc. | 559987 | 11978122 | COM |
| Ameris Bancorp | 156400 | 11615828 | COM |
| Fabrinet | 25200 | 11473056 | COM |
| Liquidia Corp. | 329200 | 11354108 | COM |
| Turning PT Brands, Inc. | 103500 | 11219400 | COM |
| AxoGen Inc. | 336200 | 11003826 | COM |
| Workiva, Inc. | 127500 | 10996875 | COM |
| Matador Resources Company | 253900 | 10775516 | COM |
| Argan, Inc | 32971 | 10330566 | COM |
| Magnite, Inc. | 635800 | 10319034 | COM |
| Artivion, Inc | 217060 | 9900107 | COM |
| OneSpaWorld Holdings Limited | 476890 | 9890699 | COM |
| Green Dot Corp. Cl A | 765000 | 9799650 | COM |
| EPlus, Inc. | 110898 | 9725755 | COM |
| M/I Homes, Inc. | 75000 | 9596250 | COM |
| Boot Barn Hldgs, Inc. | 53800 | 9494086 | COM |
| LeMaitre Vascular, Inc. | 116301 | 9431979 | COM |
| CorMedix, Inc. | 805115 | 9363487 | COM |
| Ducommun Inc. | 98100 | 9332253 | COM |
| IBEX Ltd. | 241800 | 9231924 | COM |
| Viavi Solutions, Inc. | 508100 | 9054342 | COM |
| ProPetro Holding Corp. | 947900 | 9014529 | COM |
| Interdigital, Inc. | 28300 | 9010154 | COM |
| FB Financial Corp. | 159200 | 8883360 | COM |
| CECO Environmental Corp. | 145508 | 8708654 | COM |
| Atricure, Inc. | 217992 | 8623764 | COM |
| Benchmark Electronics Inc | 198300 | 8479308 | COM |
| Addus Homecare Corp. | 78200 | 8397898 | COM |
| Rev Group, Inc. | 137800 | 8379618 | COM |
| Advanced Energy Industry, Inc. | 39700 | 8311989 | COM |
| Magnolia Oil & Gas Corp. | 376300 | 8237207 | COM |
| Build A Bear | 134100 | 8216307 | COM |
| Halozyme Therapeutics, Inc. | 117580 | 7913134 | COM |
| Phibro Animal Health Corp | 209800 | 7838128 | COM |
| Evolv Technologies Holdings | 1077900 | 7717764 | COM |
| Weave Communications, Inc. | 999080 | 7583017 | COM |
| Diodes, Inc. | 151900 | 7494746 | COM |
| Nicolet Bankshares, Inc. | 61700 | 7484210 | COM |
| Lincoln EDL Svcs | 309100 | 7464765 | COM |
| First Merchants Corporation | 196000 | 7346080 | COM |
| Eton Pharmaceuticals, Inc. | 431300 | 7293283 | COM |
| CRA Int'l Inc. | 35770 | 7178860 | COM |
| Huron Consulting Group, Inc. | 41500 | 7175765 | COM |
| Precision Drilling Corp. | 99500 | 7152060 | COM |
| Fastly, Inc. | 689800 | 7022164 | COM |
| Malibu Boats, Inc. | 244100 | 6886061 | COM |
| Radware, Ltd. | 281500 | 6781335 | COM |
| Hawkins, Inc. | 46800 | 6648408 | COM |
| Pagaya Technologies Ltd. | 305600 | 6387040 | COM |
| NPK International, Inc. | 508750 | 6064300 | COM |
| Expro Group Holdings N.V. | 446300 | 5958105 | COM |
| Coursera, Inc. | 806800 | 5938048 | COM |
| Red Violet, Inc. | 102800 | 5854460 | COM |
| Powerfleet, Inc. | 1095252 | 5826741 | COM |
| Tactile Sys Technology, Inc. | 199100 | 5773900 | COM |
| VSE Corp. | 33400 | 5770518 | COM |
| Climb Global Solutions, Inc. | 51960 | 5340968 | COM |
| 1st Source Corp. | 84700 | 5292903 | COM |
| Bioventus, Inc. | 616614 | 4587608 | COM |
| The Gorman-Rupp Co. | 93200 | 4450300 | COM |
| Lindblad Expeditions Holdings, | 306800 | 4424056 | COM |
| LSI Industries Inc. | 173400 | 3176688 | COM |
| Matrix Service Co. | 226575 | 2650928 | COM |
| Backblaze, Inc. | 552023 | 2572427 | COM |
| Shopify, Inc. | 13100 | 2108707 | COM |
| Futu Holdings Ltd. | 11000 | 1806310 | COM |
| SPDR S&P 500 ETF Trust | 2055 | 1401314 | ETF |
| Microsoft Corp. | 2665 | 1288847 | COM |
| Micron Technology | 4500 | 1284345 | COM |
| H World Group Ltd. | 24000 | 1129200 | COM |
| JP Morgan Chase & Company Inc. | 3052 | 983387 | COM |
| Apple, Inc. | 3476 | 944879 | COM |
| Alphabet, Inc. Cl A | 1900 | 594721 | COM |
| Alphabet, Inc. Cl C | 1620 | 508356 | COM |
| The Travelers Co., Inc. | 1581 | 458603 | COM |
| Johnson & Johnson | 2050 | 424199 | COM |
| Mastercard, Inc. | 662 | 377663 | COM |
| Resmed Inc. | 1450 | 349262 | COM |
| Amgen, Inc. | 1035 | 338811 | COM |
| Bank of New York Mellon Corp. | 2553 | 296327 | COM |
| Newmont Mining | 2873 | 286887 | COM |
| Wells Fargo Co New Perp Pfd | 225 | 272700 | PFD |
| SPDR Gold Shares ETF | 675 | 267509 | ETF |
| McDonald's Corporation | 853 | 260783 | COM |
| Caterpillar, Inc. | 448 | 256365 | COM |
| Wal Mart Stores Inc. | 2187 | 243614 | COM |
| Aflac Inc. | 2000 | 220540 | COM |
| Xenacare Hldgs, Inc. | 140000 | 0 | COM |
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