Oberweis Asset Management as of March 31, 2026
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 | 2.3M | 84.59 | |
| Lumentum Hldgs (LITE) | 5.5 | $187M | 266k | 702.76 | |
| Credo Technology Group Holding (CRDO) | 2.8 | $96M | 1.0M | 93.87 | |
| Digitalocean Hldgs (DOCN) | 2.3 | $80M | 928k | 85.78 | |
| Sharkninja (SN) | 1.9 | $64M | 600k | 105.90 | |
| NOVA MEASURING Instruments L (NVMI) | 1.8 | $60M | 138k | 434.28 | |
| Dana Holding Corporation (DAN) | 1.6 | $54M | 1.6M | 33.65 | |
| Brightspring Health Svcs (BTSG) | 1.5 | $49M | 1.2M | 42.61 | |
| M/a (MTSI) | 1.4 | $48M | 216k | 222.07 | |
| Rambus (RMBS) | 1.3 | $45M | 526k | 86.03 | |
| Clean Harbors (CLH) | 1.2 | $41M | 144k | 286.73 | |
| Sitime Corp (SITM) | 1.2 | $41M | 119k | 345.35 | |
| Ultra Clean Holdings (UCTT) | 1.2 | $40M | 641k | 62.18 | |
| Everus Constr Group (ECG) | 1.1 | $39M | 327k | 118.06 | |
| Frontdoor (FTDR) | 1.1 | $38M | 718k | 52.86 | |
| Carpenter Technology Corporation (CRS) | 1.1 | $37M | 94k | 394.15 | |
| SkyWest (SKYW) | 1.1 | $36M | 393k | 91.83 | |
| Lattice Semiconductor (LSCC) | 1.0 | $35M | 374k | 92.76 | |
| Globus Med Inc cl a (GMED) | 1.0 | $34M | 392k | 86.16 | |
| Camtek (CAMT) | 1.0 | $34M | 223k | 151.61 | |
| Arcutis Biotherapeutics (ARQT) | 1.0 | $32M | 1.4M | 23.56 | |
| Flowserve Corporation (FLS) | 0.9 | $32M | 435k | 73.51 | |
| Silicon Motion Technology (SIMO) | 0.9 | $32M | 283k | 112.29 | |
| Life Time Group Holdings (LTH) | 0.9 | $31M | 1.2M | 26.94 | |
| Rush Street Interactive (RSI) | 0.9 | $31M | 1.4M | 21.75 | |
| Firstcash Holdings (FCFS) | 0.9 | $31M | 166k | 188.00 | |
| Fastly Inc cl a (FSLY) | 0.9 | $31M | 1.1M | 29.06 | |
| Tutor Perini Corporation (TPC) | 0.9 | $30M | 394k | 77.19 | |
| Dutch Bros (BROS) | 0.9 | $30M | 599k | 50.66 | |
| Solaris Oilfield Infrstr (SEI) | 0.9 | $30M | 532k | 56.51 | |
| Merit Medical Systems (MMSI) | 0.9 | $29M | 424k | 68.93 | |
| Federal Signal Corporation (FSS) | 0.9 | $29M | 268k | 108.14 | |
| American Superconductor (AMSC) | 0.8 | $29M | 850k | 33.85 | |
| Mercury Computer Systems (MRCY) | 0.8 | $29M | 391k | 72.91 | |
| Arcosa (ACA) | 0.8 | $28M | 268k | 106.14 | |
| OSI Systems (OSIS) | 0.8 | $28M | 107k | 265.51 | |
| Core Natural Resources (CNR) | 0.8 | $28M | 270k | 104.73 | |
| Waystar Holding Corp (WAY) | 0.8 | $28M | 1.2M | 24.11 | |
| Encompass Health Corp (EHC) | 0.8 | $28M | 290k | 96.73 | |
| Veracyte (VCYT) | 0.8 | $27M | 840k | 32.21 | |
| Aar (AIR) | 0.8 | $27M | 245k | 109.46 | |
| ICU Medical, Incorporated (ICUI) | 0.8 | $26M | 204k | 129.15 | |
| Littelfuse (LFUS) | 0.7 | $24M | 72k | 339.35 | |
| Primoris Services (PRIM) | 0.7 | $24M | 166k | 143.04 | |
| Remitly Global (RELY) | 0.7 | $23M | 1.5M | 15.67 | |
| Genpact (G) | 0.7 | $23M | 607k | 37.25 | |
| Assurant (AIZ) | 0.7 | $22M | 102k | 217.81 | |
| Blue Bird Corp (BLBD) | 0.7 | $22M | 389k | 56.79 | |
| Imax Corp Cad (IMAX) | 0.6 | $22M | 577k | 38.01 | |
| Levi Strauss Co New cl a com stk (LEVI) | 0.6 | $22M | 1.2M | 18.49 | |
| Alphatec Holdings (ATEC) | 0.6 | $21M | 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 | 264k | 77.99 | |
| Livanova Plc Ord (LIVN) | 0.6 | $21M | 322k | 63.56 | |
| D R S Technologies (DRS) | 0.6 | $20M | 450k | 44.52 | |
| Urban Outfitters (URBN) | 0.6 | $20M | 315k | 63.35 | |
| Indivior Pharmaceuticals (INDV) | 0.6 | $20M | 653k | 30.48 | |
| Grand Canyon Education (LOPE) | 0.6 | $20M | 117k | 170.03 | |
| Commscope Hldg (VISN) | 0.6 | $20M | 1.1M | 18.20 | |
| Matador Resources (MTDR) | 0.6 | $20M | 313k | 63.18 | |
| Viavi Solutions Inc equities (VIAV) | 0.6 | $20M | 593k | 33.28 | |
| Chime Finl (CHYM) | 0.6 | $19M | 1.0M | 18.73 | |
| Pegasystems (PEGA) | 0.6 | $19M | 455k | 42.56 | |
| Catalyst Pharmaceutical Partners (CPRX) | 0.6 | $19M | 781k | 24.76 | |
| Q2 Holdings (QTWO) | 0.6 | $19M | 395k | 47.30 | |
| Powell Industries (POWL) | 0.5 | $19M | 34k | 541.08 | |
| Irhythm Technologies (IRTC) | 0.5 | $18M | 156k | 118.02 | |
| Box Inc cl a (BOX) | 0.5 | $18M | 772k | 23.64 | |
| Argan (AGX) | 0.5 | $18M | 33k | 544.64 | |
| Hinge Health Inc Cl A (HNGE) | 0.5 | $18M | 466k | 38.56 | |
| New York Times Company (NYT) | 0.5 | $18M | 212k | 83.73 | |
| American Eagle Outfitters (AEO) | 0.5 | $17M | 1.0M | 16.70 | |
| Alignment Healthcare (ALHC) | 0.5 | $17M | 967k | 17.62 | |
| Biosante Pharmaceuticals (ANIP) | 0.5 | $17M | 221k | 76.90 | |
| Envista Hldgs Corp (NVST) | 0.5 | $17M | 665k | 25.37 | |
| Genedx Holdings Corp (WGS) | 0.5 | $17M | 261k | 64.22 | |
| Spx Corp (SPXC) | 0.5 | $17M | 83k | 199.94 | |
| Shake Shack Inc cl a (SHAK) | 0.5 | $17M | 188k | 88.47 | |
| Calix (CALX) | 0.5 | $16M | 335k | 48.99 | |
| Super Group Sghc (SGHC) | 0.5 | $16M | 1.5M | 10.80 | |
| Ez (EZPW) | 0.5 | $16M | 639k | 25.38 | |
| LeMaitre Vascular (LMAT) | 0.5 | $16M | 149k | 109.17 | |
| Advanced Energy Industries (AEIS) | 0.5 | $16M | 49k | 322.71 | |
| Zurn Water Solutions Corp Zws (ZWS) | 0.5 | $16M | 352k | 44.84 | |
| Fabrinet (FN) | 0.5 | $16M | 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 | 277k | 55.31 | |
| Diodes Incorporated (DIOD) | 0.5 | $15M | 224k | 68.26 | |
| Ambarella (AMBA) | 0.4 | $15M | 295k | 51.48 | |
| Mednax (MD) | 0.4 | $15M | 701k | 21.39 | |
| Magnolia Oil & Gas Corp magnolia oil & gas corp (MGY) | 0.4 | $14M | 455k | 31.57 | |
| Skyward Specialty Insurance Gr (SKWD) | 0.4 | $14M | 327k | 43.68 | |
| Halozyme Therapeutics (HALO) | 0.4 | $14M | 220k | 64.63 | |
| Liquidia Technologies (LQDA) | 0.4 | $14M | 372k | 37.74 | |
| Arlo Technologies (ARLO) | 0.4 | $14M | 982k | 14.23 | |
| Healthequity (HQY) | 0.4 | $14M | 167k | 83.57 | |
| Propetro Hldg (PUMP) | 0.4 | $14M | 966k | 14.41 | |
| Zeta Global Holdings Corp (ZETA) | 0.4 | $14M | 871k | 15.92 | |
| Mirion Technologies Inc - US (MIR) | 0.4 | $14M | 744k | 18.59 | |
| Moog (MOG.A) | 0.4 | $13M | 45k | 292.64 | |
| InterDigital (IDCC) | 0.4 | $13M | 43k | 302.00 | |
| Ducommun Incorporated (DCO) | 0.4 | $12M | 100k | 122.00 | |
| Impinj (PI) | 0.4 | $12M | 118k | 102.70 | |
| A10 Networks (ATEN) | 0.3 | $12M | 504k | 23.12 | |
| Dave (DAVE) | 0.3 | $12M | 67k | 174.09 | |
| Seacoast Bkg Corp Fla (SBCF) | 0.3 | $12M | 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 | 807k | 13.88 | |
| Onespaworld Holdings Ltd onespaworld hold (OSW) | 0.3 | $11M | 486k | 22.95 | |
| Nicolet Bankshares (NIC) | 0.3 | $11M | 75k | 148.62 | |
| Precision Drill (PDS) | 0.3 | $11M | 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 | 119k | 87.85 | |
| ePlus (PLUS) | 0.3 | $10M | 138k | 75.25 | |
| Evolv Technologi (EVLV) | 0.3 | $10M | 1.7M | 6.05 | |
| Boot Barn Hldgs (BOOT) | 0.3 | $10M | 68k | 146.36 | |
| Amprius Technologies (AMPX) | 0.3 | $9.9M | 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 | 89k | 93.65 | |
| Cormedix Inc cormedix (CRMD) | 0.2 | $8.2M | 1.2M | 6.79 | |
| CryoLife (AORT) | 0.2 | $8.1M | 221k | 36.62 | |
| CECO Environmental (CECO) | 0.2 | $8.0M | 135k | 59.58 | |
| Expro Group Holdings Nv (XPRO) | 0.2 | $7.9M | 455k | 17.41 | |
| Thermon Group Holdings (THR) | 0.2 | $7.8M | 155k | 50.40 | |
| Magnite Ord (MGNI) | 0.2 | $7.7M | 648k | 11.88 | |
| Lincoln Educational Services Corporation (LINC) | 0.2 | $7.7M | 188k | 40.68 | |
| Radware Ltd ord (RDWR) | 0.2 | $7.5M | 287k | 26.32 | |
| Newpark Resources (NPKI) | 0.2 | $7.5M | 518k | 14.49 | |
| Vita Coco Co Inc/the (COCO) | 0.2 | $7.5M | 156k | 47.91 | |
| American Public Education (APEI) | 0.2 | $7.4M | 130k | 56.88 | |
| Babcock & Wilcox Enterpr (BW) | 0.2 | $7.3M | 500k | 14.69 | |
| Lindblad Expeditions Hldgs I (LIND) | 0.2 | $6.6M | 379k | 17.30 | |
| VSE Corporation (VSEC) | 0.2 | $6.3M | 34k | 184.40 | |
| Knowles (KN) | 0.2 | $6.0M | 234k | 25.68 | |
| 1st Source Corporation (SRCE) | 0.2 | $6.0M | 86k | 69.21 | |
| CRA International (CRAI) | 0.2 | $5.9M | 37k | 161.88 | |
| Gorman-Rupp Company (GRC) | 0.2 | $5.9M | 95k | 62.13 | |
| Bioventus Inc - A (BVS) | 0.2 | $5.7M | 628k | 9.13 | |
| PC Connection (CNXN) | 0.2 | $5.6M | 96k | 58.46 | |
| Huron Consulting (HURN) | 0.2 | $5.4M | 42k | 127.49 | |
| Tactile Systems Technology, In (TCMD) | 0.2 | $5.3M | 203k | 26.13 | |
| Coursera (COUR) | 0.1 | $4.8M | 822k | 5.82 | |
| Black Rock Coffee Bar (BRCB) | 0.1 | $4.7M | 366k | 12.92 | |
| Rocky Brands (RCKY) | 0.1 | $4.6M | 118k | 38.72 | |
| Wayside Technology (CLMB) | 0.1 | $4.2M | 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 | 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 | 3.2k | 294.12 | |
| Apple (AAPL) | 0.0 | $896k | 3.5k | 253.80 | |
| Futu Hldgs (FUTU) | 0.0 | $615k | 4.5k | 136.76 | |
| Johnson & Johnson (JNJ) | 0.0 | $561k | 2.3k | 244.39 | |
| Alphabet Inc Class A cs (GOOGL) | 0.0 | $546k | 1.9k | 287.58 | |
| Acm Research (ACMR) | 0.0 | $512k | 13k | 39.35 | |
| Alphabet Inc Class C cs (GOOG) | 0.0 | $465k | 1.6k | 286.86 | |
| Freshworks (FRSH) | 0.0 | $464k | 58k | 8.03 | |
| Travelers Companies (TRV) | 0.0 | $461k | 1.6k | 291.68 | |
| Amgen (AMGN) | 0.0 | $364k | 1.0k | 351.78 | |
| Weave Communications (WEAV) | 0.0 | $337k | 73k | 4.62 | |
| MasterCard Incorporated (MA) | 0.0 | $331k | 662.00 | 499.46 | |
| ResMed (RMD) | 0.0 | $326k | 1.5k | 224.48 | |
| Newmont Mining Corporation (NEM) | 0.0 | $311k | 2.9k | 108.24 | |
| Bank of New York Mellon Corporation (BK) | 0.0 | $298k | 2.5k | 118.65 | |
| SPDR Gold Shares ETF Etf (GLD) | 0.0 | $290k | 675.00 | 430.29 | |
| Caterpillar (CAT) | 0.0 | $289k | 408.00 | 708.35 | |
| Ibex (IBEX) | 0.0 | $274k | 10k | 26.82 | |
| Wal-Mart Stores (WMT) | 0.0 | $266k | 2.1k | 124.30 | |
| McDonald's Corporation (MCD) | 0.0 | $266k | 855.00 | 310.66 | |
| Wells Fargo Co New Perp P PFD (WFC.PL) | 0.0 | $260k | 225.00 | 1155.00 | |
| Micron Technology (MU) | 0.0 | $237k | 700.00 | 337.84 | |
| Exxon Mobil Corporation (XOM) | 0.0 | $221k | 1.3k | 169.66 | |
| AFLAC Incorporated (AFL) | 0.0 | $219k | 2.0k | 109.71 | |
| Freeport-McMoRan Copper & Gold (FCX) | 0.0 | $211k | 3.6k | 58.79 | |
| Merck & Co (MRK) | 0.0 | $208k | 1.7k | 120.29 | |
| Xenacare Hldgs | 0.0 | $0 | 140k | 0.00 |
