Oberweis Asset Management
Latest statistics and disclosures from Oberweis Asset Management's latest quarterly 13F-HR filing:
- Top 5 stock holdings are LITE, CRDO, AAOI, SN, AMBA, and represent 13.69% of Oberweis Asset Management's stock portfolio.
- Added to shares of these 10 stocks: GMED (+$24M), ARQT (+$24M), DAN (+$19M), CNR (+$16M), Indivior (+$15M), SGHC (+$15M), ALHC (+$15M), MIR (+$14M), CALX (+$13M), ATEC (+$11M).
- Started 21 new stock positions in CNR, ARQT, WK, PUMP, GMED, TCMD, Indivior, HTHT, DAN, FSLY. MU, BHE, SGHC, ALHC, VIAV, PAHC, WFC.PL, CALX, MIR, PLUS, GLD.
- Reduced shares in these 10 stocks: ADMA (-$40M), SRAD (-$37M), ITRI (-$35M), LRN (-$27M), QRVO (-$24M), PSN (-$23M), LITE (-$18M), SFM (-$16M), BMI (-$13M), CBSH (-$11M).
- Sold out of its positions in ADMA, ARIS, AVPT, BMI, CDNS, CBSH, EXLS, FIVN, HSAI, IIIN.
- Oberweis Asset Management was a net buyer of stock by $18M.
- Oberweis Asset Management has $2.7B in assets under management (AUM), dropping by 4.72%.
- Central Index Key (CIK): 0000937886
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Portfolio Holdings for Oberweis Asset Management
Oberweis Asset Management holds 179 positions in its portfolio as reported in the December 2025 quarterly 13F filing
| Company (Ticker) | Portfolio Weight | Valued At | Change in Shares | Share Count | Share Price | |
|---|---|---|---|---|---|---|
| Lumentum Hldgs (LITE) | 3.8 | $104M | -14% | 281k | 368.59 |
|
| Credo Technology Group Holding (CRDO) | 3.6 | $97M | +4% | 675k | 143.89 |
|
| Applied Optoelectronics (AAOI) | 2.6 | $71M | +8% | 2.0M | 34.86 |
|
| Sharkninja (SN) | 2.2 | $59M | +9% | 526k | 111.90 |
|
| Ambarella (AMBA) | 1.6 | $44M | 618k | 70.84 |
|
|
| Rambus (RMBS) | 1.6 | $43M | -9% | 462k | 91.89 |
|
| SkyWest (SKYW) | 1.4 | $38M | +15% | 382k | 100.41 |
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| Encompass Health Corp (EHC) | 1.4 | $38M | 359k | 106.14 |
|
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| Sitime Corp (SITM) | 1.4 | $38M | 106k | 353.19 |
|
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| Digitalocean Hldgs (DOCN) | 1.4 | $38M | 779k | 48.12 |
|
|
| NOVA MEASURING Instruments L (NVMI) | 1.4 | $37M | 113k | 328.39 |
|
|
| Frontdoor (FTDR) | 1.3 | $35M | 611k | 57.69 |
|
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| Brightspring Health Svcs (BTSG) | 1.2 | $34M | 908k | 37.45 |
|
|
| M/a (MTSI) | 1.1 | $31M | 179k | 171.28 |
|
|
| Veracyte (VCYT) | 1.1 | $31M | 727k | 42.10 |
|
|
| Mercury Computer Systems (MRCY) | 1.1 | $30M | +3% | 414k | 73.01 |
|
| Flowserve Corporation (FLS) | 1.0 | $28M | 410k | 69.38 |
|
|
| Life Time Group Holdings (LTH) | 1.0 | $28M | +22% | 1.1M | 26.58 |
|
| Waystar Holding Corp (WAY) | 1.0 | $28M | 841k | 32.75 |
|
|
| Rush Street Interactive (RSI) | 1.0 | $27M | +18% | 1.4M | 19.43 |
|
| Clean Harbors (CLH) | 1.0 | $27M | 117k | 234.48 |
|
|
| Carpenter Technology Corporation (CRS) | 1.0 | $26M | 83k | 314.84 |
|
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| Tutor Perini Corporation (TPC) | 0.9 | $26M | +2% | 387k | 67.02 |
|
| OSI Systems (OSIS) | 0.9 | $26M | 101k | 255.06 |
|
|
| Genedx Holdings Corp (WGS) | 0.9 | $26M | +2% | 199k | 130.06 |
|
| Pegasystems (PEGA) | 0.9 | $25M | +9% | 425k | 59.72 |
|
| Freshworks (FRSH) | 0.9 | $25M | 2.1M | 12.25 |
|
|
| Dutch Bros (BROS) | 0.9 | $25M | 405k | 61.22 |
|
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| Genpact (G) | 0.9 | $24M | 522k | 46.78 |
|
|
| Q2 Holdings (QTWO) | 0.9 | $24M | +15% | 337k | 72.16 |
|
| Imax Corp Cad (IMAX) | 0.9 | $24M | +12% | 652k | 36.96 |
|
| American Superconductor (AMSC) | 0.9 | $24M | +25% | 836k | 28.78 |
|
| ICU Medical, Incorporated (ICUI) | 0.9 | $24M | +12% | 168k | 142.67 |
|
| Merit Medical Systems (MMSI) | 0.9 | $24M | +15% | 269k | 88.14 |
|
| Globus Med Inc cl a (GMED) | 0.9 | $24M | NEW | 270k | 87.31 |
|
| Arcosa (ACA) | 0.9 | $24M | 222k | 106.32 |
|
|
| Arcutis Biotherapeutics (ARQT) | 0.9 | $24M | NEW | 808k | 29.04 |
|
| Camtek (CAMT) | 0.9 | $23M | +2% | 219k | 106.34 |
|
| Lattice Semiconductor (LSCC) | 0.8 | $23M | +14% | 315k | 73.58 |
|
| Aar (AIR) | 0.8 | $23M | +15% | 273k | 82.79 |
|
| Everus Constr Group (ECG) | 0.8 | $22M | 260k | 85.56 |
|
|
| Silicon Motion Technology (SIMO) | 0.8 | $22M | +2% | 236k | 92.70 |
|
| Urban Outfitters (URBN) | 0.8 | $22M | +22% | 286k | 75.26 |
|
| American Eagle Outfitters (AEO) | 0.8 | $22M | +68% | 815k | 26.37 |
|
| Irhythm Technologies (IRTC) | 0.8 | $21M | +47% | 120k | 177.44 |
|
| Alphatec Holdings (ATEC) | 0.8 | $21M | +116% | 1.0M | 21.04 |
|
| New York Times Company (NYT) | 0.8 | $21M | +20% | 303k | 69.42 |
|
| Firstcash Holdings (FCFS) | 0.8 | $21M | +34% | 131k | 159.38 |
|
| Levi Strauss Co New cl a com stk (LEVI) | 0.8 | $21M | +10% | 994k | 20.74 |
|
| Primoris Services (PRIM) | 0.7 | $20M | -15% | 163k | 124.14 |
|
| National Vision Hldgs (EYE) | 0.7 | $20M | +31% | 785k | 25.82 |
|
| Assurant (AIZ) | 0.7 | $20M | 83k | 240.85 |
|
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| Cargurus (CARG) | 0.7 | $20M | 518k | 38.35 |
|
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| Box Inc cl a (BOX) | 0.7 | $20M | 652k | 29.91 |
|
|
| Dana Holding Corporation (DAN) | 0.7 | $19M | NEW | 797k | 23.76 |
|
| Impinj (PI) | 0.7 | $19M | 107k | 174.01 |
|
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| Federal Signal Corporation (FSS) | 0.7 | $18M | 167k | 108.59 |
|
|
| Blue Bird Corp (BLBD) | 0.7 | $18M | +2% | 383k | 47.00 |
|
| Sensient Technologies Corporation (SXT) | 0.6 | $18M | +40% | 188k | 93.95 |
|
| Genius Sports (GENI) | 0.6 | $18M | +56% | 1.6M | 11.02 |
|
| Commscope Hldg | 0.6 | $17M | +21% | 961k | 18.13 |
|
| Solaris Oilfield Infrstr (SEI) | 0.6 | $17M | 367k | 45.97 |
|
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| Grand Canyon Education (LOPE) | 0.6 | $17M | 100k | 166.31 |
|
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| Ultra Clean Holdings (UCTT) | 0.6 | $16M | +2% | 629k | 25.33 |
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| ACI Worldwide (ACIW) | 0.6 | $16M | 331k | 47.81 |
|
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| Core Natural Resources (CNR) | 0.6 | $16M | NEW | 178k | 88.51 |
|
| Littelfuse (LFUS) | 0.6 | $16M | 62k | 252.92 |
|
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| Zeta Global Holdings Corp (ZETA) | 0.6 | $16M | 767k | 20.35 |
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| Powell Industries (POWL) | 0.6 | $16M | +2% | 49k | 318.78 |
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| Spx Corp (SPXC) | 0.6 | $15M | 77k | 200.06 |
|
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| Indivior | 0.6 | $15M | NEW | 425k | 35.88 |
|
| Super Group Sghc (SGHC) | 0.6 | $15M | NEW | 1.3M | 11.95 |
|
| Biosante Pharmaceuticals (ANIP) | 0.5 | $15M | +35% | 189k | 78.94 |
|
| Alignment Healthcare (ALHC) | 0.5 | $15M | NEW | 748k | 19.75 |
|
| Qualys (QLYS) | 0.5 | $14M | +28% | 108k | 132.90 |
|
| Mirion Technologies Inc - US (MIR) | 0.5 | $14M | NEW | 608k | 23.42 |
|
| CommVault Systems (CVLT) | 0.5 | $14M | -13% | 111k | 125.36 |
|
| Remitly Global (RELY) | 0.5 | $14M | 1.0M | 13.80 |
|
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| Catalyst Pharmaceutical Partners (CPRX) | 0.5 | $14M | +11% | 587k | 23.34 |
|
| Nlight (LASR) | 0.5 | $13M | +33% | 356k | 37.51 |
|
| Livanova Plc Ord (LIVN) | 0.5 | $13M | +14% | 212k | 61.53 |
|
| Dave (DAVE) | 0.5 | $13M | +29% | 59k | 221.41 |
|
| Healthequity (HQY) | 0.5 | $13M | 142k | 91.61 |
|
|
| Calix (CALX) | 0.5 | $13M | NEW | 245k | 52.93 |
|
| Kiniksa Pharmaceuticals Intl P Ord Shs Cl A (KNSA) | 0.5 | $13M | +2% | 313k | 41.25 |
|
| Vita Coco Co Inc/the (COCO) | 0.5 | $12M | +2% | 233k | 53.01 |
|
| Zurn Water Solutions Corp Zws (ZWS) | 0.5 | $12M | 266k | 46.49 |
|
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| Ez (EZPW) | 0.4 | $12M | -8% | 628k | 19.42 |
|
| Interface (TILE) | 0.4 | $12M | +2% | 436k | 27.92 |
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| Skyward Specialty Insurance Gr (SKWD) | 0.4 | $12M | +2% | 238k | 51.11 |
|
| Adaptive Biotechnologies Cor (ADPT) | 0.4 | $12M | +2% | 745k | 16.24 |
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| Mednax (MD) | 0.4 | $12M | +2% | 560k | 21.39 |
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| Ameris Ban (ABCB) | 0.4 | $12M | 156k | 74.27 |
|
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| Fabrinet (FN) | 0.4 | $12M | -45% | 25k | 455.28 |
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| Liquidia Technologies (LQDA) | 0.4 | $11M | +2% | 329k | 34.49 |
|
| Turning Pt Brands (TPB) | 0.4 | $11M | +2% | 104k | 108.40 |
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| Axogen (AXGN) | 0.4 | $11M | +2% | 336k | 32.73 |
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| Workiva Inc equity us cm (WK) | 0.4 | $11M | NEW | 128k | 86.25 |
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| Matador Resources (MTDR) | 0.4 | $11M | 254k | 42.44 |
|
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| Argan (AGX) | 0.4 | $10M | -45% | 33k | 313.32 |
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| Magnite Ord (MGNI) | 0.4 | $10M | +23% | 636k | 16.23 |
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| CryoLife (AORT) | 0.4 | $9.9M | +2% | 217k | 45.61 |
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| Onespaworld Holdings Ltd onespaworld hold (OSW) | 0.4 | $9.9M | +2% | 477k | 20.74 |
|
| Green Dot Corporation (GDOT) | 0.4 | $9.8M | -21% | 765k | 12.81 |
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| ePlus (PLUS) | 0.4 | $9.7M | NEW | 111k | 87.70 |
|
| M/I Homes (MHO) | 0.4 | $9.6M | +2% | 75k | 127.95 |
|
| Boot Barn Hldgs (BOOT) | 0.3 | $9.5M | +27% | 54k | 176.47 |
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| LeMaitre Vascular (LMAT) | 0.3 | $9.4M | +2% | 116k | 81.10 |
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| Cormedix Inc cormedix (CRMD) | 0.3 | $9.4M | +2% | 805k | 11.63 |
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| Ducommun Incorporated (DCO) | 0.3 | $9.3M | +2% | 98k | 95.13 |
|
| Ibex (IBEX) | 0.3 | $9.2M | +2% | 242k | 38.18 |
|
| Viavi Solutions Inc equities (VIAV) | 0.3 | $9.1M | NEW | 508k | 17.82 |
|
| Propetro Hldg (PUMP) | 0.3 | $9.0M | NEW | 948k | 9.51 |
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| InterDigital (IDCC) | 0.3 | $9.0M | -17% | 28k | 318.38 |
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| Fb Finl (FBK) | 0.3 | $8.9M | +28% | 159k | 55.80 |
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| CECO Environmental (CECO) | 0.3 | $8.7M | +58% | 146k | 59.85 |
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| AtriCure (ATRC) | 0.3 | $8.6M | +42% | 218k | 39.56 |
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| Benchmark Electronics (BHE) | 0.3 | $8.5M | NEW | 198k | 42.76 |
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| Addus Homecare Corp (ADUS) | 0.3 | $8.4M | 78k | 107.39 |
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| Rev | 0.3 | $8.4M | +2% | 138k | 60.81 |
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| Advanced Energy Industries (AEIS) | 0.3 | $8.3M | -43% | 40k | 209.37 |
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| Magnolia Oil & Gas Corp magnolia oil & gas corp (MGY) | 0.3 | $8.2M | 376k | 21.89 |
|
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| Build-A-Bear Workshop (BBW) | 0.3 | $8.2M | +46% | 134k | 61.27 |
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| Halozyme Therapeutics (HALO) | 0.3 | $7.9M | 118k | 67.30 |
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| Phibro Animal Health Corporati*on Cmn Class A (PAHC) | 0.3 | $7.8M | NEW | 210k | 37.36 |
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| Evolv Technologi (EVLV) | 0.3 | $7.7M | +13% | 1.1M | 7.16 |
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| Weave Communications (WEAV) | 0.3 | $7.6M | 999k | 7.59 |
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| Diodes Incorporated (DIOD) | 0.3 | $7.5M | -30% | 152k | 49.34 |
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| Nicolet Bankshares (NIC) | 0.3 | $7.5M | +2% | 62k | 121.30 |
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| Lincoln Educational Services Corporation (LINC) | 0.3 | $7.5M | +2% | 309k | 24.15 |
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| First Merchants Corporation (FRME) | 0.3 | $7.3M | 196k | 37.48 |
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| Eton Pharmaceuticals (ETON) | 0.3 | $7.3M | +124% | 431k | 16.91 |
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| CRA International (CRAI) | 0.3 | $7.2M | +2% | 36k | 200.69 |
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| Huron Consulting (HURN) | 0.3 | $7.2M | +2% | 42k | 172.91 |
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| Precision Drill (PDS) | 0.3 | $7.2M | +2% | 100k | 71.88 |
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| Fastly Inc cl a (FSLY) | 0.3 | $7.0M | NEW | 690k | 10.18 |
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| Malibu Boats (MBUU) | 0.3 | $6.9M | +2% | 244k | 28.21 |
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| Radware Ltd ord (RDWR) | 0.2 | $6.8M | +2% | 282k | 24.09 |
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| Hawkins (HWKN) | 0.2 | $6.6M | +2% | 47k | 142.06 |
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| Pagaya Technologies (PGY) | 0.2 | $6.4M | +60% | 306k | 20.90 |
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| Newpark Resources (NPKI) | 0.2 | $6.1M | +2% | 509k | 11.92 |
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| Expro Group Holdings Nv (XPRO) | 0.2 | $6.0M | +2% | 446k | 13.35 |
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| Coursera (COUR) | 0.2 | $5.9M | +43% | 807k | 7.36 |
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| Red Violet (RDVT) | 0.2 | $5.9M | +2% | 103k | 56.95 |
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| Powerfleet (AIOT) | 0.2 | $5.8M | +2% | 1.1M | 5.32 |
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| Tactile Systems Technology, In (TCMD) | 0.2 | $5.8M | NEW | 199k | 29.00 |
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| VSE Corporation (VSEC) | 0.2 | $5.8M | -25% | 33k | 172.77 |
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| Wayside Technology (CLMB) | 0.2 | $5.3M | +59% | 52k | 102.79 |
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| 1st Source Corporation (SRCE) | 0.2 | $5.3M | +2% | 85k | 62.49 |
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| Bioventus Inc - A (BVS) | 0.2 | $4.6M | +2% | 617k | 7.44 |
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| Gorman-Rupp Company (GRC) | 0.2 | $4.5M | +2% | 93k | 47.75 |
|
| Lindblad Expeditions Hldgs I (LIND) | 0.2 | $4.4M | +2% | 307k | 14.42 |
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| LSI Industries (LYTS) | 0.1 | $3.2M | +2% | 173k | 18.32 |
|
| Matrix Service Company (MTRX) | 0.1 | $2.7M | +2% | 227k | 11.70 |
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| Backblaze (BLZE) | 0.1 | $2.6M | +2% | 552k | 4.66 |
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| Shopify Inc cl a (SHOP) | 0.1 | $2.1M | +31% | 13k | 160.97 |
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| Futu Hldgs (FUTU) | 0.1 | $1.8M | 11k | 164.21 |
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| SPDR S&P 500 ETF Trust Etf (SPY) | 0.1 | $1.4M | -5% | 2.1k | 681.90 |
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| Microsoft Corporation (MSFT) | 0.0 | $1.3M | 2.7k | 483.62 |
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| Micron Technology (MU) | 0.0 | $1.3M | NEW | 4.5k | 285.41 |
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| Huazhu Group (HTHT) | 0.0 | $1.1M | NEW | 24k | 47.05 |
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| JPMorgan Chase & Co. (JPM) | 0.0 | $983k | -2% | 3.1k | 322.21 |
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| Apple (AAPL) | 0.0 | $945k | +2% | 3.5k | 271.83 |
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| Alphabet Inc Class A cs (GOOGL) | 0.0 | $595k | 1.9k | 313.01 |
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| Alphabet Inc Class C cs (GOOG) | 0.0 | $508k | 1.6k | 313.80 |
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| Travelers Companies (TRV) | 0.0 | $459k | -5% | 1.6k | 290.07 |
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| Johnson & Johnson (JNJ) | 0.0 | $424k | 2.1k | 206.93 |
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| MasterCard Incorporated (MA) | 0.0 | $378k | 662.00 | 570.49 |
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| ResMed (RMD) | 0.0 | $349k | 1.5k | 240.87 |
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| Amgen (AMGN) | 0.0 | $339k | 1.0k | 327.35 |
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| Bank of New York Mellon Corporation (BK) | 0.0 | $296k | -2% | 2.6k | 116.07 |
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| Newmont Mining Corporation (NEM) | 0.0 | $287k | -9% | 2.9k | 99.86 |
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| Wells Fargo Co New Perp P PFD (WFC.PL) | 0.0 | $273k | NEW | 225.00 | 1212.00 |
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| SPDR Gold Shares ETF Etf (GLD) | 0.0 | $268k | NEW | 675.00 | 396.31 |
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| McDonald's Corporation (MCD) | 0.0 | $261k | 853.00 | 305.72 |
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| Caterpillar (CAT) | 0.0 | $256k | +5% | 448.00 | 572.24 |
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| Wal-Mart Stores (WMT) | 0.0 | $244k | -7% | 2.2k | 111.39 |
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| AFLAC Incorporated (AFL) | 0.0 | $221k | 2.0k | 110.27 |
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| Xenacare Hldgs | 0.0 | $0 | 140k | 0.00 |
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Past Filings by Oberweis Asset Management
SEC 13F filings are viewable for Oberweis Asset Management going back to 2010
- Oberweis Asset Management 2025 Q4 filed Feb. 17, 2026
- Oberweis Asset Management 2025 Q3 filed Nov. 17, 2025
- Oberweis Asset Management 2025 Q2 filed Aug. 14, 2025
- Oberweis Asset Management 2025 Q1 filed May 15, 2025
- Oberweis Asset Management 2024 Q4 filed Feb. 14, 2025
- Oberweis Asset Management 2024 Q3 filed Nov. 14, 2024
- Oberweis Asset Management 2024 Q2 filed Aug. 14, 2024
- Oberweis Asset Management 2024 Q1 filed May 15, 2024
- Oberweis Asset Management 2023 Q4 filed Feb. 14, 2024
- Oberweis Asset Management 2023 Q3 filed Nov. 14, 2023
- Oberweis Asset Management 2023 Q2 filed Aug. 14, 2023
- Oberweis Asset Management 2023 Q1 filed May 15, 2023
- Oberweis Asset Management 2022 Q4 filed Feb. 14, 2023
- Oberweis Asset Management 2022 Q3 filed Nov. 14, 2022
- Oberweis Asset Management 2022 Q2 filed Aug. 15, 2022
- Oberweis Asset Management 2022 Q1 filed May 16, 2022