PM
Penbrook Management LLC — 13F Portfolio Analysis & Stock Picks (Q2 2026)
Penbrook Management LLCCIK: 0001381055
Diversified strategyMomentum followerQuality / disciplined sizing
Total reported value
$156.8M
Reporting period: 2026-06-30 · Number of holdings: 101
Penbrook Management LLC disclosed 101 holdings in its latest 13F filing for the period ending 2026-06-30, with total reported value of $156.8M and a quarterly turnover rate of 32.9%.
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Personality snowflake
- Concentration
- 12.89
- Portfolio Stability
- 32.91
- Momentum
- 100
- Sector conviction
- 49
- Diversification
- 100
- Sizing Uniformity
- 84.91
Penbrook Management LLC's disclosed holdings carry a Herfindahl concentration index of 0.032 — mathematically equivalent to about 31 equally-sized positions, well below its 101 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 1.51), 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 63% 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.govSold out SEA1EUR
Trim AEHR
-93.5% -$2.4M
New buy 811927102
Sold out TRI4EUR
New buy ALLT
New buy TRI
Holdings Map
New buyAddUnchangedTrim
Top 10 holdings by weight
Full holdings list this quarter
| # | Ticker | Issuer | Asset Subclass | Weight | Weight Change | Shares Change | 4Q Trend |
|---|---|---|---|---|---|---|---|
| 1 | NVO | Novo-nordisk A/s-spons Adr | Stock-Healthcare | 9.67% | +0.87% | — | |
| 2 | AMZN | Amazon.com Inc | Stock-Consumer Disc | 7.87% | -0.29% | — | |
| 3 | GOOGL | Alphabet Inc-cl A | Stock-Comm Services | 5.28% | +0.23% | — | |
| 4 | MSFT | Microsoft CORP | Stock-Tech | 5.22% | -1.02% | -1.46% | |
| 5 | GOOG | Alphabet Inc-cl C | Stock-Comm Services | 5.08% | +0.18% | — | |
| 6 | MCO | Moody's CORP | Stock-Financials | 3.93% | -0.56% | — | |
| 7 | ELVA | Electrovaya Inc | Stock-Other | 2.19% | +0.45% | +10.45% | |
| 8 | CYRX | Cryoport Inc | Stock-Other | 2.03% | +0.87% | +9.10% | |
| 9 | VMD | Viemed Healthcare Inc | Stock-Other | 2.02% | +0.12% | +1.75% | |
| 10 | MRVL | Marvell Technology Inc | Stock-Tech | 1.85% | +1.12% | — | |
| 11 | PLAB | Photronics Inc | Stock-Other | 1.85% | -1.11% | -7.93% | |
| 12 | ✓ | Stock-Other | 1.82% | +1.82% | NEW | ||
| 13 | EXTR | Extreme Networks Inc | Stock-Other | 1.73% | +0.78% | +0.60% | |
| 14 | PL | Planet Labs Pbc | Stock-Industrials | 1.73% | -0.51% | -22.72% | |
| 15 | PRTA | Prothena Corporation plc | Stock-Other | 1.70% | -0.30% | — | |
| 16 | ALKT | Alkami Technology Inc | Stock-Other | 1.62% | +0.10% | +10.10% | |
| 17 | ALLT | Allot Ltd. | Stock-Other | 1.55% | +1.55% | NEW | |
| 18 | CSCO | Cisco Systems Inc | Stock-Tech | 1.37% | +0.29% | — | |
| 19 | BX | Blackstone Inc | Stock-Financials | 1.36% | -0.22% | — | |
| 20 | MGNI | Magnite Inc | Stock-Other | 1.36% | +0.35% | -0.13% | |
| 21 | ACLS | Axcelis Technologies Inc | Stock-Tech | 1.32% | +0.47% | -9.92% | |
| 22 | CURI | Curiositystream Inc | Stock-Other | 1.30% | -0.21% | +13.28% | |
| 23 | TRI | Thomson Reuters CORP | Stock-Industrials | 1.27% | +1.27% | NEW | |
| 24 | NNY | Nuveen New York Muni Val | Stock-Other | 1.19% | -0.16% | — | |
| 25 | VET | Vermilion Energy Inc | Stock-Other | 1.18% | -0.88% | — | |
| 26 | TRGP | Targa Resources CORP | Stock-Energy | 1.18% | -0.13% | — | |
| 27 | BRK-B | Berkshire Hathaway Inc-cl B | Stock-Other | 1.05% | -0.15% | -0.30% | |
| 28 | BTE | Baytex Energy CORP | Stock-Other | 1.02% | +1.02% | NEW | |
| 29 | ET | Energy Transfer LP | Stock-Energy | 0.91% | -0.18% | — | |
| 30 | WMB | Williams Cos Inc | Stock-Energy | 0.91% | -0.14% | — | |
| 31 | ADP | Automatic Data Processing | Stock-Tech | 0.90% | -0.07% | — | |
| 32 | DAIO | Data I/o CORP | Stock-Other | 0.89% | +0.21% | -0.28% | |
| 33 | SONY | Sony Group CORP - Sp Adr | Stock-Tech | 0.88% | -0.19% | — | |
| 34 | ABBV | Abbvie Inc | Stock-Healthcare | 0.83% | -0.02% | -0.35% | |
| 35 | VZ | Verizon Communications Inc | Stock-Comm Services | 0.82% | -0.32% | +1.76% | |
| 36 | ABNB | Airbnb Inc-class A | Stock-Consumer Disc | 0.82% | -0.04% | — | |
| 37 | SPY | Ss Spdr S&p 500 ETF Trust-us | ETF-Large Cap & Growth | 0.76% | -0.03% | — | |
| 38 | MESO | Mesoblast Ltd- Spon Adr | Stock-Other | 0.75% | -0.26% | — | |
| 39 | HESM | Hess Midstream LP - Class A | Stock-Other | 0.72% | -0.16% | — | |
| 40 | BLFS | Biolife Solutions Inc | Stock-Other | 0.72% | +0.39% | +71.47% | |
| 41 | DV | Doubleverify Holdings Inc | Stock-Other | 0.71% | -0.03% | -0.24% | |
| 42 | USAC | USA Compression Partners LP | Stock-Other | 0.69% | -0.15% | — | |
| 43 | NPKI | Npk International Inc | Stock-Other | 0.69% | -0.05% | +0.85% | |
| 44 | NVDA | Nvidia CORP | Stock-Tech | 0.68% | -0.01% | +1.91% | |
| 45 | OKE | Oneok Inc | Stock-Energy | 0.63% | -0.14% | — | |
| 46 | META | Meta Platforms Inc-class A | Stock-Comm Services | 0.61% | -0.13% | — | |
| 47 | KLIC | Kulicke & Soffa Industries | Stock-Tech | 0.61% | +0.26% | — | |
| 48 | PAR | Par Technology Corp/del | Stock-Other | 0.60% | +0.24% | +50.27% | |
| 49 | BPOP | Popular Inc | Stock-Financials | 0.56% | — | -3.64% | |
| 50 | NVS | Novartis Ag-sponsored Adr | Stock-Healthcare | 0.55% | -0.09% | — |
1–50 of 101
* 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.
Portfolio Performance
Performance for Q3 2026
-1.1%
Performance Last 4 Quarters
+29.6%
- Stdev
- +18.5%
- Beta
- +1.21
- Alpha
- -8.6%
- Max Drawdown
- -17.2%
- Annualized Perf
- +14.9%
- Batting Avg vs S&P
- +38.9%
- Sortino
- +1.65
- Stutzer
- +0.25
- Treynor
- +0.13
- Sterling
- +0.76
- Calmar
- +0.86
- Information Ratio
- -0.44
- Tracking Error
- +10.2%
- Stdev Down
- +9.4%
- Winning Months %
- +55.6%
- Losing Months %
- +44.4%
- Best 12 Months
- +44.2%
- Worst 12 Months
- -11%
- Efficiency Ratio
- +0.34
- Sharpe
- +0.84
- Stdev Sectors
- +6.9%
- Skewness
- +0.84
- Kurtosis
- +2.63
- Upside Potential
- +3.48
Reported value over time
Sector allocation
Sector allocation over time
Quarterly history
| Period | Holdings | Total value | Stability | Top holdings | |
|---|---|---|---|---|---|
| 2026 Q2 | 101 | $156.8M | 33 | ||
| 2026 Q1 | 93 | $132.1M | 29 | ||
| 2025 Q4 | 97 | $145.0M | 16 | ||
| 2025 Q3 | 104 | $143.2M | 37 | ||
| 2025 Q2 | 102 | $133.0M | 0 | ||
| 2025 Q1 | 107 | $132.3M | 100 | ||
| 2024 Q4 | 110 | $146.6M | 0 | ||
| 2024 Q3 | 106 | $153.8M | 0 | ||
| 2024 Q2 | 101 | $163.8M | 0 | ||
| 2024 Q1 | 102 | $161.3M | 0 | ||
| 2023 Q4 | 103 | $148.8M | 0 | ||
| 2023 Q3 | 100 | $136.5M | 0 | ||
| 2023 Q2 | 100 | $138.0M | 0 | ||
| 2023 Q1 | 95 | $130.5M | 0 | ||
| 2022 Q4 | 95 | $117.3M | 0 | ||
| 2022 Q3 | 99 | $116.2M | 0 | ||
| 2022 Q2 | 106 | $126.8M | 0 | ||
| 2022 Q1 | 109 | $154.1M | 0 | ||
| 2021 Q4 | 102 | $166.0M | 0 | ||
| 2021 Q3 | 102 | $160.9M | 0 | ||
| 2021 Q2 | 104 | $166.8M | 91 | ||
| 2021 Q1 | 102 | $139.0M | 30 | ||
| 2020 Q4 | 97 | $129.8M | 0 | ||
| 2020 Q3 | 101 | $115.4M | 20 | ||
| 2020 Q2 | 131 | $101.7M | 31 | ||
| 2020 Q1 | 130 | $78.1M | 32 | ||
| 2019 Q4 | 131 | $102.6M | 20 | ||
| 2019 Q3 | 126 | $92.2M | 15 | ||
| 2019 Q2 | 127 | $93.2M | 25 | ||
| 2019 Q1 | 131 | $96.2M | 21 | ||
| 2018 Q4 | 128 | $87.6M | 27 | ||
| 2018 Q3 | 129 | $104.4M | 22 | ||
| 2018 Q2 | 127 | $104.0M | 18 | ||
| 2018 Q1 | 124 | $100.0M | 20 | ||
| 2017 Q4 | 124 | $111.1M | 50 | ||
| 2016 Q3 | 130 | $92.8M | 22 | ||
| 2016 Q2 | 132 | $90.7M | 22 | ||
| 2016 Q1 | 132 | $90.8M | 23 | ||
| 2015 Q4 | 144 | $97.5M | 26 | ||
| 2015 Q3 | 144 | $94.4M | 36 | ||
| 2015 Q2 | 136 | $105.3M | 21 | ||
| 2015 Q1 | 146 | $112.6M | 27 | ||
| 2014 Q4 | 146 | $110.9M | 19 | ||
| 2014 Q3 | 154 | $108.5M | 21 | ||
| 2014 Q2 | 150 | $113.2M | 30 | ||
| 2014 Q1 | 136 | $105.8M | 26 | ||
| 2013 Q4 | 140 | $103.1M | 0 |
Holding changes this quarter
Penbrook Management LLC's most significant position changes for 2026-06-30: New buy: ; Sold out: Seabridge Gold Inc (SEA1EUR); New buy: Allot Ltd. (ALLT); Sold out: Thomson Reuters CORP (TRI4EUR); New buy: Thomson Reuters CORP (TRI).
| # | Ticker | Issuer | Weight Change | Shares Change | Action |
|---|---|---|---|---|---|
| 1 | ✓ | +1.8% | NEW | New buy | |
| 2 | ALLT | Allot Ltd. | +1.6% | NEW | New buy |
| 3 | TRI | Thomson Reuters CORP | +1.3% | NEW | New buy |
| 4 | MRVL | Marvell Technology Inc | +1.1% | — | Unchanged |
| 5 | BTE | Baytex Energy CORP | +1% | NEW | New buy |
| 6 | NVO | Novo-nordisk A/s-spons Adr | +0.9% | — | Unchanged |
| 7 | CYRX | Cryoport Inc | +0.9% | +9.10% | Add |
| 8 | EXTR | Extreme Networks Inc | +0.8% | +0.60% | Add |
| 9 | ACLS | Axcelis Technologies Inc | +0.5% | -9.92% | Trim |
| 10 | ELVA | Electrovaya Inc | +0.5% | +10.45% | Add |
| 11 | BLFS | Biolife Solutions Inc | +0.4% | +71.47% | Add |
| 12 | MGNI | Magnite Inc | +0.4% | -0.13% | Trim |
| 13 | BLZE | Backblaze Inc-a | +0.4% | -25.57% | Trim |
| 14 | TLT | Ishares 20+ Year Treasury Bd | +0.3% | NEW | New buy |
| 15 | CSCO | Cisco Systems Inc | +0.3% | — | Unchanged |
| 16 | KLIC | Kulicke & Soffa Industries | +0.3% | — | Unchanged |
| 17 | PAR | Par Technology Corp/del | +0.2% | +50.27% | Add |
| 18 | AMPL | Amplitude Inc-class A | +0.2% | NEW | New buy |
| 19 | GOOGL | Alphabet Inc-cl A | +0.2% | — | Unchanged |
| 20 | RITM | Rithm Capital CORP | +0.2% | NEW | New buy |
| 21 | DAIO | Data I/o CORP | +0.2% | -0.28% | Trim |
| 22 | TER | Teradyne Inc | +0.2% | NEW | New buy |
| 23 | GOOG | Alphabet Inc-cl C | +0.2% | — | Unchanged |
| 24 | OSS | One Stop Systems Inc | +0.2% | -16.83% | Trim |
| 25 | WLY | Wiley (john) & Sons-class A | +0.2% | NEW | New buy |
| 26 | JPM | Jpmorgan Chase & Co | +0.1% | NEW | New buy |
| 27 | POWI | Power Integrations Inc | +0.1% | — | Unchanged |
| 28 | HTGC | Hercules Capital Inc | +0.1% | +95.13% | Add |
| 29 | FAF | First American Financial | +0.1% | NEW | New buy |
| 30 | VMD | Viemed Healthcare Inc | +0.1% | +1.75% | Add |
| 31 | SKYH | Sky Harbour Group CORP | +0.1% | NEW | New buy |
| 32 | BNED | Barnes & Noble Education Inc | +0.1% | NEW | New buy |
| 33 | ALKT | Alkami Technology Inc | +0.1% | +10.10% | Add |
| 34 | PAYS | Paysign Inc | +0.1% | +2.73% | Add |
| 35 | KOPN | Kopin CORP | +0.1% | -22.95% | Trim |
| 36 | IOVA | Iovance Biotherapeutics Inc | +0.1% | +45.94% | Add |
| 37 | QQQ | Invesco Qqq Trust Series 1 | 0% | — | Unchanged |
| 38 | AQST | Aquestive Therapeutics Inc | 0% | +69.37% | Add |
| 39 | TTI | Tetra Technologies Inc | 0% | -0.57% | Trim |
| 40 | LINC | Lincoln Educational Services | 0% | -0.20% | Trim |
| 41 | GBDC | Golub Capital Bdc Inc | 0% | +23.02% | Add |
| 42 | BPOP | Popular Inc | — | -3.64% | Trim |
| 43 | FBP | First Bancorp Puerto Rico | — | -3.83% | Trim |
| 44 | NVDA | Nvidia CORP | 0% | +1.91% | Add |
| 45 | AAPL | Apple Inc | 0% | — | Unchanged |
| 46 | IBM | Intl Business Machines CORP | 0% | — | Unchanged |
| 47 | RSP | Invesco S&p 500 Equal Weight | 0% | — | Unchanged |
| 48 | SPYM | Ste Str Spdr Pt S&p 500 ETF | 0% | -3.30% | Trim |
| 49 | MRK | Merck & Co. Inc. | 0% | — | Unchanged |
| 50 | VKQ | Invesco Municipal Trust | 0% | — | Unchanged |
1–50 of 106
Filing History
FAQ
What is Penbrook Management LLC and what type of investor is it?
Penbrook Management LLC 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 $156.8M, spread across 101 disclosed positions.
What are Penbrook Management LLC's largest equity positions?
Based on the latest 13F filing, Penbrook Management LLC's top holdings by market value are:
1. Novo-nordisk A/s-spons Adr (NVO) — $15.2M (9.7%)
2. Amazon.com Inc (AMZN) — $12.3M (7.9%)
3. Alphabet Inc-cl A (GOOGL) — $8.3M (5.3%)
4. Microsoft CORP (MSFT) — $8.2M (5.2%)
5. Alphabet Inc-cl C (GOOG) — $8.0M (5.1%)
What changes did Penbrook Management LLC make in its most recent portfolio filing?
In the latest reported quarter, Penbrook Management LLC made 57 notable position adjustments: 13 new positions were initiated, 17 existing holdings were added to, 22 positions were partially reduced, and 5 were completely exited. The largest of these moves: New buy: ; Sold out: Seabridge Gold Inc (SEA1EUR); New buy: Allot Ltd. (ALLT); Sold out: Thomson Reuters CORP (TRI4EUR); New buy: Thomson Reuters CORP (TRI)
What sectors does Penbrook Management LLC focus on?
Penbrook Management LLC is concentrated in the following sectors based on its current disclosed equity portfolio:
• Information Technology: 22.4%
• Communication Services: 18.8%
• Health Care: 18.7%
• Consumer Discretionary: 13.8%
• Financials: 10.8%
• Energy: 9.6%
Investment Profile
Penbrook Management LLC returned an annualized 14.9% over the trailing 36 months — underperforming the S&P 500 by 8.6 points — based on a reconstructed track record of its disclosed 13F positions, with a beta of 1.21 (more volatile than the market) and a 39% quarterly batting average against the index.
Its portfolio is broadly diversified and moderately active.
Its turnover score has risen from 0 to 33 over the past 4 quarters — a shift toward more active trading.
It has added to its CYRX position over the past two quarters (+$2.7M, now $3.2M), while trimming PL over the same stretch (-$3.1M, still holding $2.7M).
Peer Institutions
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AF
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CIK 0001774744
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Concentration5.8
Portfolio Stability0.0
Sector conviction55.9
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View detail
QG
Q Global Advisors, LLC
CIK 0001469589
Total reported value
$156.8M
48 stks
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Concentration37.1
Portfolio Stability71.1
Sector conviction71.1
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View detail
PC
Promus Capital, LLC
CIK 0002054921
Total reported value
$156.7M
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Concentration23.9
Portfolio Stability44.6
Sector conviction67.6
AUM within 0.0% of this institution
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Developer Access
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