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Oberweis Asset Management Inc/ — 13F Portfolio Breakdown & Top Holdings (Q2 2026)
Oberweis Asset Management Inc/CIK: 0000937886
Diversified strategyMomentum followerSector-focused
Total reported value
$4.8B
Reporting period: 2026-06-30 · Number of holdings: 176
OBERWEIS ASSET MANAGEMENT INC/ disclosed 176 holdings in its latest 13F filing for the period ending 2026-06-30, with total reported value of $4.8B and a quarterly turnover rate of 60.5%.
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Personality snowflake
- Concentration
- 5.77
- Portfolio Stability
- 60.5
- Momentum
- 100
- Sector conviction
- 97.06
- Diversification
- 100
- Sizing Uniformity
- 87.56
Oberweis Asset Management Inc/'s disclosed holdings carry a Herfindahl concentration index of 0.014 — mathematically equivalent to about 69 equally-sized positions, well below its 176 actual disclosed holdings. That gap points to a strategy built around a small core of high-conviction bets rather than broad diversification.
Position sizes vary widely across the portfolio (a coefficient of variation of 1.24), with a handful of outsized bets alongside many smaller positions.
No strong tilt toward either adding to existing winners or initiating outsized new positions was observed in the latest reported quarter.
Sector classification currently covers about 55% of this portfolio's disclosed value; the remainder includes holdings (e.g. unmapped tickers, options, or other security types) not yet covered by our sector mapping.
Source and citation information
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Recent moves
View source Form 13F filing on SEC.govTrim LITE
-72.9% -$125.2M
Add CRDO
-0.8% $179.7M
Add SIMO
+12.0% $73.7M
Add HNGE
+83.7% $53.0M
Sold out FLS
Trim DAN
-18.2% -$18.4M
Holdings Map
New buyAddUnchangedTrim
* This report is exclusively curated by the AlphaSMO team. AlphaSMO is the web's most authoritative 13F / Inside Trader database, delivering precise insider trading and institutional holdings insights.
Top 10 holdings by weight
Full holdings list this quarter
| # | Ticker | Issuer | Asset Subclass | Weight | Weight Change | Shares Change | 4Q Trend |
|---|---|---|---|---|---|---|---|
| 1 | CRDO | Credo Technology Group Holding Ltd | Stock-Tech | 5.69% | +2.86% | -0.84% | |
| 2 | AAOI | Applied Optoelectronics Inc | Stock-Tech | 5.48% | -0.39% | -23.78% | |
| 3 | DOCN | Digitalocean Holdings Inc | Stock-Tech | 3.02% | +0.67% | +0.27% | |
| 4 | SIMO | Silicon Motion Technol-adr | Stock-Other | 2.18% | +1.24% | +11.96% | |
| 5 | UCTT | Ultra Clean Holdings Inc | Stock-Other | 1.91% | +0.73% | +1.06% | |
| 6 | SN | SharkNinja, Inc. | Stock-Consumer Disc | 1.87% | -0.01% | -1.08% | |
| 7 | SITM | Sitime CORP | Stock-Tech | 1.84% | +0.62% | +0.18% | |
| 8 | BTSG | Brightspring Health Services | Stock-Other | 1.71% | +0.25% | +2.27% | |
| 9 | HNGE | Hinge Health Inc-a | Stock-Other | 1.47% | +0.94% | +83.67% | |
| 10 | RMBS | Rambus Inc | Stock-Tech | 1.45% | +0.11% | +0.13% | |
| 11 | MTSI | Macom Technology Solutions H | Stock-Tech | 1.41% | -0.01% | -16.92% | |
| 12 | LITE | Lumentum Holdings Inc | Stock-Tech | 1.28% | -4.25% | -72.89% | |
| 13 | LSCC | Lattice Semiconductor CORP | Stock-Tech | 1.24% | +0.21% | +4.64% | |
| 14 | NVMI | Nova Ltd. | Stock-Other | 1.22% | -0.55% | -21.22% | |
| 15 | CRS | Carpenter Technology | Stock-Industrials | 1.19% | +0.09% | -1.23% | |
| 16 | FTDR | Frontdoor Inc | Stock-Consumer Disc | 1.15% | +0.03% | +0.15% | |
| 17 | ECG | Everus Construction Group | Stock-Industrials | 1.13% | -0.01% | +0.51% | |
| 18 | VCYT | Veracyte Inc | Stock-Other | 1.07% | +0.27% | +4.51% | |
| 19 | POWL | Powell Industries Inc | Stock-Industrials | 1.06% | +0.51% | +425.58% | |
| 20 | LTH | Life Time Group Holdings Inc | Stock-Other | 1.00% | +0.08% | +2.51% | |
| 21 | RSI | Rush Street Interactive Inc | Stock-Other | 1.00% | +0.08% | +13.48% | |
| 22 | MRCY | Mercury Systems Inc | Stock-Industrials | 0.99% | +0.15% | +0.43% | |
| 23 | BROS | Dutch Bros Inc-class A | Stock-Consumer Disc | 0.97% | +0.07% | +9.62% | |
| 24 | CLH | Clean Harbors Inc | Stock-Industrials | 0.95% | -0.27% | +6.32% | |
| 25 | SEI | Solaris Energy Infrastructur | Stock-Energy | 0.94% | +0.05% | +6.15% | |
| 26 | DIOD | Diodes Inc | Stock-Other | 0.94% | +0.49% | +84.46% | |
| 27 | ACA | Arcosa Inc | Stock-Industrials | 0.89% | +0.05% | +10.37% | |
| 28 | BLBD | Blue Bird CORP | Stock-Other | 0.86% | +0.21% | +36.12% | |
| 29 | CAMT | Camtek Ltd. | Stock-Other | 0.85% | -0.15% | +13.74% | |
| 30 | LIVN | LivaNova PLC | Stock-Other | 0.85% | +0.25% | +55.37% | |
| 31 | AMSC | American Superconductor CORP | Stock-Other | 0.85% | — | +16.19% | |
| 32 | MXL | Maxlinear Inc | Stock-Other | 0.85% | +0.85% | NEW | |
| 33 | GMED | Globus Medical Inc - A | Stock-Healthcare | 0.84% | -0.16% | +30.57% | |
| 34 | NOVT | Novanta Inc | Stock-Other | 0.82% | +0.82% | NEW | |
| 35 | SKYW | Skywest Inc | Stock-Industrials | 0.79% | -0.27% | -2.22% | |
| 36 | VIAV | Viavi Solutions Inc | Stock-Tech | 0.78% | +0.20% | +33.78% | |
| 37 | MOG-A | Moog Inc-class A | Stock-Other | 0.76% | +0.37% | +93.13% | |
| 38 | LFUS | Littelfuse Inc | Stock-Tech | 0.75% | +0.03% | +11.14% | |
| 39 | ARQT | Arcutis Biotherapeutics Inc | Stock-Other | 0.74% | -0.21% | +0.51% | |
| 40 | FCFS | Firstcash Holdings Inc | Stock-Financials | 0.74% | -0.18% | +0.27% | |
| 41 | BLLN | Billiontoone Inc Cl A | Stock-Other | 0.74% | +0.74% | NEW | |
| 42 | DAN | Dana Inc | Stock-Other | 0.74% | -0.86% | -18.19% | |
| 43 | ESI | Element Solutions Inc | Stock-Materials | 0.73% | +0.73% | NEW | |
| 44 | AIR | Aar CORP | Stock-Industrials | 0.73% | -0.06% | +0.49% | |
| 45 | RELY | Remitly Global Inc | Stock-Other | 0.73% | +0.06% | +7.98% | |
| 46 | ICUI | Icu Medical Inc | Stock-Other | 0.72% | -0.06% | +16.37% | |
| 47 | FSS | Federal Signal CORP | Stock-Industrials | 0.71% | -0.14% | +0.54% | |
| 48 | OUST | Ouster Inc | Stock-Other | 0.71% | +0.71% | NEW | |
| 49 | LEVI | Levi Strauss & Co- Class A | Stock-Other | 0.70% | +0.06% | +16.35% | |
| 50 | MMSI | Merit Medical Systems Inc | Stock-Healthcare | 0.68% | -0.18% | +11.60% |
1–50 of 176
Portfolio Performance
Performance for Q3 2026
-2.4%
Performance Last 4 Quarters
+39.9%
- Stdev
- +23.8%
- Beta
- +1.48
- Alpha
- -7.4%
- Max Drawdown
- -17.5%
- Annualized Perf
- +21.3%
- Batting Avg vs S&P
- +50%
- Sortino
- +1.64
- Stutzer
- +0.27
- Treynor
- +0.15
- Sterling
- +0.91
- Calmar
- +1.22
- Information Ratio
- +0.14
- Tracking Error
- +15.5%
- Stdev Down
- +13.5%
- Winning Months %
- +69.4%
- Losing Months %
- +30.6%
- Best 12 Months
- +72.6%
- Worst 12 Months
- -4.2%
- Efficiency Ratio
- +0.38
- Sharpe
- +0.93
- Stdev Sectors
- +15.4%
- Skewness
- +0.13
- Kurtosis
- +0.46
- Upside Potential
- +3.33
Reported value over time
Sector allocation
Sector allocation over time
Quarterly history
| Period | Holdings | Total value | Stability | Top holdings | |
|---|---|---|---|---|---|
| 2026 Q2 | 176 | $4.8B | 61 | ||
| 2026 Q1 | 180 | $3.4B | 45 | ||
| 2025 Q4 | 179 | $2.7B | 38 | ||
| 2025 Q3 | 183 | $2.6B | 68 | ||
| 2025 Q2 | 185 | $2.3B | 0 | ||
| 2025 Q1 | 192 | $2.0B | 100 | ||
| 2024 Q4 | 196 | $2.1B | 0 | ||
| 2024 Q3 | 206 | $2.0B | 0 | ||
| 2024 Q2 | 197 | $1.6B | 0 | ||
| 2024 Q1 | 196 | $1.4B | 0 | ||
| 2023 Q4 | 192 | $1.1B | 0 | ||
| 2023 Q3 | 195 | $941.5M | 0 | ||
| 2023 Q2 | 187 | $822.8M | 0 | ||
| 2023 Q1 | 174 | $644.5M | 0 | ||
| 2022 Q4 | 168 | $470.4M | 0 | ||
| 2022 Q3 | 173 | $427.3M | 0 | ||
| 2022 Q2 | 164 | $395.1M | 0 | ||
| 2022 Q1 | 165 | $499.2M | 0 | ||
| 2021 Q4 | 160 | $548.1M | 0 | ||
| 2021 Q3 | 162 | $482.9M | 0 | ||
| 2021 Q2 | 163 | $456.5M | 100 | ||
| 2021 Q1 | 170 | $488.9M | 51 | ||
| 2020 Q4 | 138 | $379.8M | 50 | ||
| 2020 Q3 | 126 | $297.0M | 46 | ||
| 2020 Q2 | 123 | $254.7M | 100 | ||
| 2020 Q1 | 172 | $181.2M | 82 | ||
| 2019 Q4 | 200 | $300.2M | 100 | ||
| 2019 Q3 | 196 | $442.5M | 59 | ||
| 2019 Q2 | 196 | $550.4M | 53 | ||
| 2019 Q1 | 201 | $498.0M | 71 | ||
| 2018 Q4 | 200 | $447.1M | 72 | ||
| 2018 Q3 | 209 | $516.0M | 75 | ||
| 2018 Q2 | 220 | $397.9M | 56 | ||
| 2018 Q1 | 227 | $381.0M | 48 | ||
| 2017 Q4 | 234 | $427.5M | 49 | ||
| 2017 Q3 | 169 | $359.3M | 69 | ||
| 2017 Q2 | 142 | $364.4M | 65 | ||
| 2017 Q1 | 139 | $339.3M | 61 | ||
| 2016 Q4 | 135 | $334.7M | 36 | ||
| 2016 Q3 | 135 | $347.4M | 51 | ||
| 2016 Q2 | 170 | $336.5M | 53 | ||
| 2016 Q1 | 175 | $346.2M | 55 | ||
| 2015 Q4 | 175 | $356.5M | 53 | ||
| 2015 Q3 | 165 | $343.2M | 39 | ||
| 2015 Q2 | 166 | $378.0M | 40 | ||
| 2015 Q1 | 169 | $356.0M | 55 | ||
| 2014 Q4 | 127 | $334.9M | 39 | ||
| 2014 Q3 | 133 | $365.1M | 50 | ||
| 2014 Q2 | 138 | $405.6M | 63 | ||
| 2014 Q1 | 149 | $476.2M | 68 | ||
| 2013 Q4 | 148 | $412.9M | 47 | ||
| 2013 Q3 | 141 | $352.1M | 71 | ||
| 2013 Q2 | 147 | $352.7M | 0 |
Holding changes this quarter
Oberweis Asset Management Inc/'s most significant position changes for 2026-06-30: New buy: Maxlinear Inc (MXL); New buy: Novanta Inc (NOVT); New buy: Billiontoone Inc Cl A (BLLN); New buy: Element Solutions Inc (ESI); New buy: Ouster Inc (OUST).
Showing top 200 changes by size (of 203 total)
| # | Ticker | Issuer | Weight Change | Shares Change | Action |
|---|---|---|---|---|---|
| 1 | CRDO | Credo Technology Group Holding Ltd | +2.9% | -0.84% | Trim |
| 2 | SIMO | Silicon Motion Technol-adr | +1.2% | +11.96% | Add |
| 3 | HNGE | Hinge Health Inc-a | +0.9% | +83.67% | Add |
| 4 | MXL | Maxlinear Inc | +0.9% | NEW | New buy |
| 5 | NOVT | Novanta Inc | +0.8% | NEW | New buy |
| 6 | BLLN | Billiontoone Inc Cl A | +0.7% | NEW | New buy |
| 7 | UCTT | Ultra Clean Holdings Inc | +0.7% | +1.06% | Add |
| 8 | ESI | Element Solutions Inc | +0.7% | NEW | New buy |
| 9 | OUST | Ouster Inc | +0.7% | NEW | New buy |
| 10 | DOCN | Digitalocean Holdings Inc | +0.7% | +0.27% | Add |
| 11 | CGNX | Cognex CORP | +0.6% | NEW | New buy |
| 12 | GVA | Granite Construction Inc | +0.6% | NEW | New buy |
| 13 | SITM | Sitime CORP | +0.6% | +0.18% | Add |
| 14 | PDFS | Pdf Solutions Inc | +0.6% | NEW | New buy |
| 15 | MYRG | Myr Group Inc/delaware | +0.6% | NEW | New buy |
| 16 | KGS | Kodiak Gas Services Inc | +0.6% | NEW | New buy |
| 17 | POWL | Powell Industries Inc | +0.5% | +425.58% | Add |
| 18 | DIOD | Diodes Inc | +0.5% | +84.46% | Add |
| 19 | OMDA | Omada Health Inc | +0.5% | NEW | New buy |
| 20 | CECO | Ceco Environmental CORP | +0.4% | +165.18% | Add |
| 21 | WLDN | Willdan Group Inc | +0.4% | NEW | New buy |
| 22 | FORM | Formfactor Inc | +0.4% | NEW | New buy |
| 23 | WTS | Watts Water Technologies-a | +0.4% | NEW | New buy |
| 24 | OPLN | Openlane Inc | +0.4% | NEW | New buy |
| 25 | MOG-A | Moog Inc-class A | +0.4% | +93.13% | Add |
| 26 | TRS | Trimas CORP | +0.3% | NEW | New buy |
| 27 | INOD | Innodata Inc | +0.3% | NEW | New buy |
| 28 | VCYT | Veracyte Inc | +0.3% | +4.51% | Add |
| 29 | DAVE | Dave Inc | +0.3% | +18.29% | Add |
| 30 | LQDA | Liquidia CORP | +0.3% | +9.22% | Add |
| 31 | BTSG | Brightspring Health Services | +0.3% | +2.27% | Add |
| 32 | LIVN | LivaNova PLC | +0.3% | +55.37% | Add |
| 33 | ADPT | Adaptive Biotechnologies | +0.2% | +55.99% | Add |
| 34 | VVX | V2x Inc | +0.2% | NEW | New buy |
| 35 | VSEC | Vse CORP | +0.2% | +153.17% | Add |
| 36 | LSCC | Lattice Semiconductor CORP | +0.2% | +4.64% | Add |
| 37 | BLBD | Blue Bird CORP | +0.2% | +36.12% | Add |
| 38 | VIAV | Viavi Solutions Inc | +0.2% | +33.78% | Add |
| 39 | KFRC | Kforce Inc | +0.2% | NEW | New buy |
| 40 | AMBA | Ambarella, Inc. | +0.2% | +15.95% | Add |
| 41 | MRCY | Mercury Systems Inc | +0.2% | +0.43% | Add |
| 42 | ✓ | +0.1% | NEW | New buy | |
| 43 | RMBS | Rambus Inc | +0.1% | +0.13% | Add |
| 44 | NVST | Envista Holdings CORP | +0.1% | +68.44% | Add |
| 45 | CHEF | Chefs' Warehouse Inc/the | +0.1% | NEW | New buy |
| 46 | KNSA | Kiniksa Pharmaceuticals International, plc | +0.1% | +29.63% | Add |
| 47 | HALO | Halozyme Therapeutics Inc | +0.1% | +45.97% | Add |
| 48 | CRS | Carpenter Technology | +0.1% | -1.23% | Trim |
| 49 | ATEN | A10 Networks Inc | +0.1% | +9.46% | Add |
| 50 | LTH | Life Time Group Holdings Inc | +0.1% | +2.51% | Add |
1–50 of 200
Filing History
FAQ
What is Oberweis Asset Management Inc/ and what type of investor is it?
Oberweis Asset Management Inc/ is an investment manager that files SEC Form 13F quarterly, disclosing its U.S. public equity holdings to regulators. As of the most recent reporting period (2026-06-30), the firm manages a tracked equity portfolio valued at approximately $4.8B, spread across 176 disclosed positions.
What are Oberweis Asset Management Inc/'s largest equity positions?
Based on the latest 13F filing, Oberweis Asset Management Inc/'s top holdings by market value are:
1. Credo Technology Group Holding Ltd (CRDO) — $275.6M (5.7%)
2. Applied Optoelectronics Inc (AAOI) — $265.4M (5.5%)
3. Digitalocean Holdings Inc (DOCN) — $146.0M (3.0%)
4. Silicon Motion Technol-adr (SIMO) — $105.4M (2.2%)
5. Ultra Clean Holdings Inc (UCTT) — $92.3M (1.9%)
What changes did Oberweis Asset Management Inc/ make in its most recent portfolio filing?
In the latest reported quarter, Oberweis Asset Management Inc/ made 190 notable position adjustments: 23 new positions were initiated, 113 existing holdings were added to, 27 positions were partially reduced, and 27 were completely exited. The largest of these moves: New buy: Maxlinear Inc (MXL); New buy: Novanta Inc (NOVT); New buy: Billiontoone Inc Cl A (BLLN); New buy: Element Solutions Inc (ESI); New buy: Ouster Inc (OUST)
What sectors does Oberweis Asset Management Inc/ focus on?
Oberweis Asset Management Inc/ is concentrated in the following sectors based on its current disclosed equity portfolio:
• Information Technology: 50.4%
• Industrials: 22.9%
• Consumer Discretionary: 9.0%
• Health Care: 8.1%
• Financials: 3.6%
• Energy: 3.5%
Investment Profile
Oberweis Asset Management Inc/ returned an annualized 21.3% over the trailing 36 months — underperforming the S&P 500 by 7.4 points — based on a reconstructed track record of its disclosed 13F positions, with a beta of 1.48 (more volatile than the market) and a 50% quarterly batting average against the index.
Its portfolio is broadly diversified and fast-trading, with 50.4% of the portfolio concentrated in Information Technology.
Its turnover score has risen from 0 to 61 over the past 4 quarters — a shift toward more active trading.
It has added to its AAOI position over the past two quarters (+$194.3M, now $265.4M), while trimming IMAX over the same stretch (-$11.1M, still holding $13.0M).
Peer Institutions
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Concentration17.8
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Sector conviction39.9
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MP
MFN Partners Management, LP
CIK 0001732811
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FA
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Developer Access
Access Oberweis Asset Management Inc/'s institutional profile programmatically:
REST API
curl https://alphasmo.com/api/v1/institutions/oberweis-asset-management-incCLI
npx alphasmo institutions get oberweis-asset-management-inc