Oberweis Asset Management
Latest statistics and disclosures from Oberweis Asset Management's latest quarterly 13F-HR filing:
- Top 5 stock holdings are AAOI, LITE, CRDO, DOCN, SN, and represent 18.46% of Oberweis Asset Management's stock portfolio.
- Added to shares of these 10 stocks: CRDO (+$33M), DAN (+$27M), AAOI (+$26M), DRS (+$20M), INDV (+$20M), CHYM (+$19M), HNGE (+$18M), NVST (+$17M), SHAK (+$17M), ARLO (+$14M).
- Started 22 new stock positions in Thermon Group Holdings, INDV, KN, MRK, RCKY, BRCB, SHAK, APEI, ATEN, NVST. DRS, SBCF, XOM, BW, ACMR, FCX, MOG.A, AMPX, ARLO, CNXN, HNGE, CHYM.
- Reduced shares in these 10 stocks: CARG (-$20M), , GENI (-$18M), AMBA (-$17M), FRSH (-$16M), ACIW (-$16M), Indivior (-$15M), CVLT (-$14M), TPB (-$11M), WK (-$11M).
- Sold out of its positions in ACIW, ATRC, BLZE, BBW, CARG, CVLT, FRME, GDOT, HWKN, LYTS. MBUU, MTRX, AIOT, Rev, SXT, SHOP, TPB, WK, GENI, Indivior, PGY.
- Oberweis Asset Management was a net buyer of stock by $403M.
- Oberweis Asset Management has $3.4B in assets under management (AUM), dropping by 23.80%.
- Central Index Key (CIK): 0000937886
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Portfolio Holdings for Oberweis Asset Management
Oberweis Asset Management holds 180 positions in its portfolio as reported in the March 2026 quarterly 13F filing
| Company (Ticker) | Portfolio Weight | Valued At | Change in Shares | Share Count | Share Price | |
|---|---|---|---|---|---|---|
| Applied Optoelectronics (AAOI) | 5.9 | $199M | +15% | 2.3M | 84.59 |
|
| Lumentum Hldgs (LITE) | 5.5 | $187M | -5% | 266k | 702.76 |
|
| Credo Technology Group Holding (CRDO) | 2.8 | $96M | +51% | 1.0M | 93.87 |
|
| Digitalocean Hldgs (DOCN) | 2.3 | $80M | +19% | 928k | 85.78 |
|
| Sharkninja (SN) | 1.9 | $64M | +13% | 600k | 105.90 |
|
| NOVA MEASURING Instruments L (NVMI) | 1.8 | $60M | +21% | 138k | 434.28 |
|
| Dana Holding Corporation (DAN) | 1.6 | $54M | +102% | 1.6M | 33.65 |
|
| Brightspring Health Svcs (BTSG) | 1.5 | $49M | +27% | 1.2M | 42.61 |
|
| M/a (MTSI) | 1.4 | $48M | +20% | 216k | 222.07 |
|
| Rambus (RMBS) | 1.3 | $45M | +13% | 526k | 86.03 |
|
| Clean Harbors (CLH) | 1.2 | $41M | +23% | 144k | 286.73 |
|
| Sitime Corp (SITM) | 1.2 | $41M | +12% | 119k | 345.35 |
|
| Ultra Clean Holdings (UCTT) | 1.2 | $40M | 641k | 62.18 |
|
|
| Everus Constr Group (ECG) | 1.1 | $39M | +25% | 327k | 118.06 |
|
| Frontdoor (FTDR) | 1.1 | $38M | +17% | 718k | 52.86 |
|
| Carpenter Technology Corporation (CRS) | 1.1 | $37M | +14% | 94k | 394.15 |
|
| SkyWest (SKYW) | 1.1 | $36M | +2% | 393k | 91.83 |
|
| Lattice Semiconductor (LSCC) | 1.0 | $35M | +19% | 374k | 92.76 |
|
| Globus Med Inc cl a (GMED) | 1.0 | $34M | +45% | 392k | 86.16 |
|
| Camtek (CAMT) | 1.0 | $34M | 223k | 151.61 |
|
|
| Arcutis Biotherapeutics (ARQT) | 1.0 | $32M | +68% | 1.4M | 23.56 |
|
| Flowserve Corporation (FLS) | 0.9 | $32M | +6% | 435k | 73.51 |
|
| Silicon Motion Technology (SIMO) | 0.9 | $32M | +19% | 283k | 112.29 |
|
| Life Time Group Holdings (LTH) | 0.9 | $31M | +9% | 1.2M | 26.94 |
|
| Rush Street Interactive (RSI) | 0.9 | $31M | 1.4M | 21.75 |
|
|
| Firstcash Holdings (FCFS) | 0.9 | $31M | +26% | 166k | 188.00 |
|
| Fastly Inc cl a (FSLY) | 0.9 | $31M | +55% | 1.1M | 29.06 |
|
| Tutor Perini Corporation (TPC) | 0.9 | $30M | 394k | 77.19 |
|
|
| Dutch Bros (BROS) | 0.9 | $30M | +47% | 599k | 50.66 |
|
| Solaris Oilfield Infrstr (SEI) | 0.9 | $30M | +44% | 532k | 56.51 |
|
| Merit Medical Systems (MMSI) | 0.9 | $29M | +57% | 424k | 68.93 |
|
| Federal Signal Corporation (FSS) | 0.9 | $29M | +60% | 268k | 108.14 |
|
| American Superconductor (AMSC) | 0.8 | $29M | 850k | 33.85 |
|
|
| Mercury Computer Systems (MRCY) | 0.8 | $29M | -5% | 391k | 72.91 |
|
| Arcosa (ACA) | 0.8 | $28M | +20% | 268k | 106.14 |
|
| OSI Systems (OSIS) | 0.8 | $28M | +5% | 107k | 265.51 |
|
| Core Natural Resources (CNR) | 0.8 | $28M | +51% | 270k | 104.73 |
|
| Waystar Holding Corp (WAY) | 0.8 | $28M | +38% | 1.2M | 24.11 |
|
| Encompass Health Corp (EHC) | 0.8 | $28M | -19% | 290k | 96.73 |
|
| Veracyte (VCYT) | 0.8 | $27M | +15% | 840k | 32.21 |
|
| Aar (AIR) | 0.8 | $27M | -10% | 245k | 109.46 |
|
| ICU Medical, Incorporated (ICUI) | 0.8 | $26M | +21% | 204k | 129.15 |
|
| Littelfuse (LFUS) | 0.7 | $24M | +15% | 72k | 339.35 |
|
| Primoris Services (PRIM) | 0.7 | $24M | 166k | 143.04 |
|
|
| Remitly Global (RELY) | 0.7 | $23M | +45% | 1.5M | 15.67 |
|
| Genpact (G) | 0.7 | $23M | +16% | 607k | 37.25 |
|
| Assurant (AIZ) | 0.7 | $22M | +23% | 102k | 217.81 |
|
| Blue Bird Corp (BLBD) | 0.7 | $22M | 389k | 56.79 |
|
|
| Imax Corp Cad (IMAX) | 0.6 | $22M | -11% | 577k | 38.01 |
|
| Levi Strauss Co New cl a com stk (LEVI) | 0.6 | $22M | +17% | 1.2M | 18.49 |
|
| Alphatec Holdings (ATEC) | 0.6 | $21M | +90% | 1.9M | 10.88 |
|
| Nlight (LASR) | 0.6 | $21M | 363k | 57.02 |
|
|
| National Vision Hldgs (EYE) | 0.6 | $21M | 798k | 25.90 |
|
|
| Ameris Ban (ABCB) | 0.6 | $21M | +68% | 264k | 77.99 |
|
| Livanova Plc Ord (LIVN) | 0.6 | $21M | +51% | 322k | 63.56 |
|
| D R S Technologies (DRS) | 0.6 | $20M | NEW | 450k | 44.52 |
|
| Urban Outfitters (URBN) | 0.6 | $20M | +9% | 315k | 63.35 |
|
| Indivior Pharmaceuticals (INDV) | 0.6 | $20M | NEW | 653k | 30.48 |
|
| Grand Canyon Education (LOPE) | 0.6 | $20M | +17% | 117k | 170.03 |
|
| Commscope Hldg (VISN) | 0.6 | $20M | +13% | 1.1M | 18.20 |
|
| Matador Resources (MTDR) | 0.6 | $20M | +23% | 313k | 63.18 |
|
| Viavi Solutions Inc equities (VIAV) | 0.6 | $20M | +16% | 593k | 33.28 |
|
| Chime Finl (CHYM) | 0.6 | $19M | NEW | 1.0M | 18.73 |
|
| Pegasystems (PEGA) | 0.6 | $19M | +7% | 455k | 42.56 |
|
| Catalyst Pharmaceutical Partners (CPRX) | 0.6 | $19M | +32% | 781k | 24.76 |
|
| Q2 Holdings (QTWO) | 0.6 | $19M | +17% | 395k | 47.30 |
|
| Powell Industries (POWL) | 0.5 | $19M | -29% | 34k | 541.08 |
|
| Irhythm Technologies (IRTC) | 0.5 | $18M | +30% | 156k | 118.02 |
|
| Box Inc cl a (BOX) | 0.5 | $18M | +18% | 772k | 23.64 |
|
| Argan (AGX) | 0.5 | $18M | 33k | 544.64 |
|
|
| Hinge Health Inc Cl A (HNGE) | 0.5 | $18M | NEW | 466k | 38.56 |
|
| New York Times Company (NYT) | 0.5 | $18M | -30% | 212k | 83.73 |
|
| American Eagle Outfitters (AEO) | 0.5 | $17M | +28% | 1.0M | 16.70 |
|
| Alignment Healthcare (ALHC) | 0.5 | $17M | +29% | 967k | 17.62 |
|
| Biosante Pharmaceuticals (ANIP) | 0.5 | $17M | +17% | 221k | 76.90 |
|
| Envista Hldgs Corp (NVST) | 0.5 | $17M | NEW | 665k | 25.37 |
|
| Genedx Holdings Corp (WGS) | 0.5 | $17M | +31% | 261k | 64.22 |
|
| Spx Corp (SPXC) | 0.5 | $17M | +8% | 83k | 199.94 |
|
| Shake Shack Inc cl a (SHAK) | 0.5 | $17M | NEW | 188k | 88.47 |
|
| Calix (CALX) | 0.5 | $16M | +36% | 335k | 48.99 |
|
| Super Group Sghc (SGHC) | 0.5 | $16M | +19% | 1.5M | 10.80 |
|
| Ez (EZPW) | 0.5 | $16M | 639k | 25.38 |
|
|
| LeMaitre Vascular (LMAT) | 0.5 | $16M | +27% | 149k | 109.17 |
|
| Advanced Energy Industries (AEIS) | 0.5 | $16M | +23% | 49k | 322.71 |
|
| Zurn Water Solutions Corp Zws (ZWS) | 0.5 | $16M | +32% | 352k | 44.84 |
|
| Fabrinet (FN) | 0.5 | $16M | +20% | 30k | 521.52 |
|
| Kiniksa Pharmaceuticals Intl P Ord Shs Cl A (KNSA) | 0.5 | $15M | 319k | 48.15 |
|
|
| Phibro Animal Health Corporati*on Cmn Class A (PAHC) | 0.5 | $15M | +32% | 277k | 55.31 |
|
| Diodes Incorporated (DIOD) | 0.5 | $15M | +47% | 224k | 68.26 |
|
| Ambarella (AMBA) | 0.4 | $15M | -52% | 295k | 51.48 |
|
| Mednax (MD) | 0.4 | $15M | +25% | 701k | 21.39 |
|
| Magnolia Oil & Gas Corp magnolia oil & gas corp (MGY) | 0.4 | $14M | +20% | 455k | 31.57 |
|
| Skyward Specialty Insurance Gr (SKWD) | 0.4 | $14M | +37% | 327k | 43.68 |
|
| Halozyme Therapeutics (HALO) | 0.4 | $14M | +87% | 220k | 64.63 |
|
| Liquidia Technologies (LQDA) | 0.4 | $14M | +13% | 372k | 37.74 |
|
| Arlo Technologies (ARLO) | 0.4 | $14M | NEW | 982k | 14.23 |
|
| Healthequity (HQY) | 0.4 | $14M | +17% | 167k | 83.57 |
|
| Propetro Hldg (PUMP) | 0.4 | $14M | 966k | 14.41 |
|
|
| Zeta Global Holdings Corp (ZETA) | 0.4 | $14M | +13% | 871k | 15.92 |
|
| Mirion Technologies Inc - US (MIR) | 0.4 | $14M | +22% | 744k | 18.59 |
|
| Moog (MOG.A) | 0.4 | $13M | NEW | 45k | 292.64 |
|
| InterDigital (IDCC) | 0.4 | $13M | +50% | 43k | 302.00 |
|
| Ducommun Incorporated (DCO) | 0.4 | $12M | 100k | 122.00 |
|
|
| Impinj (PI) | 0.4 | $12M | +10% | 118k | 102.70 |
|
| A10 Networks (ATEN) | 0.3 | $12M | NEW | 504k | 23.12 |
|
| Dave (DAVE) | 0.3 | $12M | +13% | 67k | 174.09 |
|
| Seacoast Bkg Corp Fla (SBCF) | 0.3 | $12M | NEW | 379k | 30.29 |
|
| Axogen (AXGN) | 0.3 | $11M | 342k | 33.13 |
|
|
| Benchmark Electronics (BHE) | 0.3 | $11M | 202k | 56.06 |
|
|
| Adaptive Biotechnologies Cor (ADPT) | 0.3 | $11M | +8% | 807k | 13.88 |
|
| Onespaworld Holdings Ltd onespaworld hold (OSW) | 0.3 | $11M | 486k | 22.95 |
|
|
| Nicolet Bankshares (NIC) | 0.3 | $11M | +21% | 75k | 148.62 |
|
| Precision Drill (PDS) | 0.3 | $11M | +13% | 113k | 98.40 |
|
| Interface (TILE) | 0.3 | $11M | 444k | 24.92 |
|
|
| Eton Pharmaceuticals (ETON) | 0.3 | $11M | 439k | 24.68 |
|
|
| Qualys (QLYS) | 0.3 | $10M | +10% | 119k | 87.85 |
|
| ePlus (PLUS) | 0.3 | $10M | +23% | 138k | 75.25 |
|
| Evolv Technologi (EVLV) | 0.3 | $10M | +55% | 1.7M | 6.05 |
|
| Boot Barn Hldgs (BOOT) | 0.3 | $10M | +26% | 68k | 146.36 |
|
| Amprius Technologies (AMPX) | 0.3 | $9.9M | NEW | 585k | 16.86 |
|
| M/I Homes (MHO) | 0.3 | $9.4M | 76k | 122.45 |
|
|
| Fb Finl (FBK) | 0.2 | $8.4M | 162k | 51.94 |
|
|
| Addus Homecare Corp (ADUS) | 0.2 | $8.4M | +14% | 89k | 93.65 |
|
| Cormedix Inc cormedix (CRMD) | 0.2 | $8.2M | +50% | 1.2M | 6.79 |
|
| CryoLife (AORT) | 0.2 | $8.1M | 221k | 36.62 |
|
|
| CECO Environmental (CECO) | 0.2 | $8.0M | -7% | 135k | 59.58 |
|
| Expro Group Holdings Nv (XPRO) | 0.2 | $7.9M | 455k | 17.41 |
|
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| Thermon Group Holdings | 0.2 | $7.8M | NEW | 155k | 50.40 |
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| Magnite Ord (MGNI) | 0.2 | $7.7M | 648k | 11.88 |
|
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| Lincoln Educational Services Corporation (LINC) | 0.2 | $7.7M | -39% | 188k | 40.68 |
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| Radware Ltd ord (RDWR) | 0.2 | $7.5M | 287k | 26.32 |
|
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| Newpark Resources (NPKI) | 0.2 | $7.5M | 518k | 14.49 |
|
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| Vita Coco Co Inc/the (COCO) | 0.2 | $7.5M | -33% | 156k | 47.91 |
|
| American Public Education (APEI) | 0.2 | $7.4M | NEW | 130k | 56.88 |
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| Babcock & Wilcox Enterpr (BW) | 0.2 | $7.3M | NEW | 500k | 14.69 |
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| Lindblad Expeditions Hldgs I (LIND) | 0.2 | $6.6M | +23% | 379k | 17.30 |
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| VSE Corporation (VSEC) | 0.2 | $6.3M | 34k | 184.40 |
|
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| Knowles (KN) | 0.2 | $6.0M | NEW | 234k | 25.68 |
|
| 1st Source Corporation (SRCE) | 0.2 | $6.0M | 86k | 69.21 |
|
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| CRA International (CRAI) | 0.2 | $5.9M | 37k | 161.88 |
|
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| Gorman-Rupp Company (GRC) | 0.2 | $5.9M | 95k | 62.13 |
|
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| Bioventus Inc - A (BVS) | 0.2 | $5.7M | 628k | 9.13 |
|
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| PC Connection (CNXN) | 0.2 | $5.6M | NEW | 96k | 58.46 |
|
| Huron Consulting (HURN) | 0.2 | $5.4M | 42k | 127.49 |
|
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| Tactile Systems Technology, In (TCMD) | 0.2 | $5.3M | 203k | 26.13 |
|
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| Coursera (COUR) | 0.1 | $4.8M | 822k | 5.82 |
|
|
| Black Rock Coffee Bar (BRCB) | 0.1 | $4.7M | NEW | 366k | 12.92 |
|
| Rocky Brands (RCKY) | 0.1 | $4.6M | NEW | 118k | 38.72 |
|
| Wayside Technology (CLMB) | 0.1 | $4.2M | +307% | 212k | 19.82 |
|
| Red Violet (RDVT) | 0.1 | $3.6M | 105k | 34.60 |
|
|
| SPDR S&P 500 ETF Trust Etf (SPY) | 0.0 | $1.5M | +15% | 2.4k | 650.41 |
|
| Huazhu Group (HTHT) | 0.0 | $1.2M | 24k | 50.29 |
|
|
| Microsoft Corporation (MSFT) | 0.0 | $987k | 2.7k | 370.17 |
|
|
| JPMorgan Chase & Co. (JPM) | 0.0 | $937k | +4% | 3.2k | 294.12 |
|
| Apple (AAPL) | 0.0 | $896k | 3.5k | 253.80 |
|
|
| Futu Hldgs (FUTU) | 0.0 | $615k | -59% | 4.5k | 136.76 |
|
| Johnson & Johnson (JNJ) | 0.0 | $561k | +11% | 2.3k | 244.39 |
|
| Alphabet Inc Class A cs (GOOGL) | 0.0 | $546k | 1.9k | 287.58 |
|
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| Acm Research (ACMR) | 0.0 | $512k | NEW | 13k | 39.35 |
|
| Alphabet Inc Class C cs (GOOG) | 0.0 | $465k | 1.6k | 286.86 |
|
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| Freshworks (FRSH) | 0.0 | $464k | -97% | 58k | 8.03 |
|
| Travelers Companies (TRV) | 0.0 | $461k | 1.6k | 291.68 |
|
|
| Amgen (AMGN) | 0.0 | $364k | 1.0k | 351.78 |
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| Weave Communications (WEAV) | 0.0 | $337k | -92% | 73k | 4.62 |
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| MasterCard Incorporated (MA) | 0.0 | $331k | 662.00 | 499.46 |
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| ResMed (RMD) | 0.0 | $326k | 1.5k | 224.48 |
|
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| Newmont Mining Corporation (NEM) | 0.0 | $311k | 2.9k | 108.24 |
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| Bank of New York Mellon Corporation (BNY) | 0.0 | $298k | 2.5k | 118.65 |
|
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| SPDR Gold Shares ETF Etf (GLD) | 0.0 | $290k | 675.00 | 430.29 |
|
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| Caterpillar (CAT) | 0.0 | $289k | -8% | 408.00 | 708.35 |
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| Ibex (IBEX) | 0.0 | $274k | -95% | 10k | 26.82 |
|
| Wal-Mart Stores (WMT) | 0.0 | $266k | -2% | 2.1k | 124.30 |
|
| McDonald's Corporation (MCD) | 0.0 | $266k | 855.00 | 310.66 |
|
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| Wells Fargo Co New Perp P PFD (WFC.PL) | 0.0 | $260k | 225.00 | 1155.00 |
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| Micron Technology (MU) | 0.0 | $237k | -84% | 700.00 | 337.84 |
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| Exxon Mobil Corporation (XOM) | 0.0 | $221k | NEW | 1.3k | 169.66 |
|
| AFLAC Incorporated (AFL) | 0.0 | $219k | 2.0k | 109.71 |
|
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| Freeport-McMoRan Copper & Gold (FCX) | 0.0 | $211k | NEW | 3.6k | 58.79 |
|
| Merck & Co (MRK) | 0.0 | $208k | NEW | 1.7k | 120.29 |
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| Xenacare Hldgs | 0.0 | $0 | 140k | 0.00 |
|
Past Filings by Oberweis Asset Management
SEC 13F filings are viewable for Oberweis Asset Management going back to 2010
- Oberweis Asset Management 2026 Q1 filed May 15, 2026
- 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