Penbrook Management LLC holds a focused book of 101 reported positions worth $156.8M as of Q2 2026 (disclosed Jul 23, 2026, a ~23-day 13F lag). This quarter they opened Seabridge Gold Inc and trimmed Microsoft Corp. Their largest long position is Novo-Nordisk A/s-Spons ADR at 10% of the reported non-option book.
Top-heavy: focused book
Share of the disclosed book in its largest positions. A higher top-5 share means a more concentrated, higher-conviction portfolio.
96% mapped to company sectors
+4 sectors below the cut, 7% together
Direct operating-company sectors from our SIC-based security master. ETF/fund and unclassified holdings stay visible separately; this is not ETF look-through exposure.
Estimated $ traded · quarter-end prices (an exit at the prior quarter-end), no cost basis
Other tracked managers holding the same core names as Penbrook Management LLC
| Manager / fund | Shared names | Their $ in those |
|---|---|---|
| Hoffman, Alan N Investment Management | 8 / 80 | $154.1M |
| United American Securities Inc. (d/b/a UAS Asset Management) | 8 / 80 | $355.5M |
| Marest Capital, LLC | 9 / 80 | $145.7M |
| CV Advisors LLC | 15 / 80 | $392.4M |
| Hoey Investments, Inc | 23 / 80 | $559.2M |
| Trust Asset Management LLC | 17 / 80 | $1.1B |
| Independent Investors Inc | 15 / 80 | $360.2M |
| Ketron Financial | 8 / 80 | $220.5M |
Ranked by the share of each fund's own book sitting in the names it shares with Penbrook Management LLC: only funds sharing at least a tenth of the book qualify. Index giants, bank custody books and market makers are excluded. They hold everything, so their overlap says nothing.
Bars show each position's share of the portfolio. Click a row for its position history.
| # | Security | Value | Shares | % Port | Last move | History |
|---|---|---|---|---|---|---|
| 1 | Novo-Nordisk A S ADR ADR | $15.2M | 316.2K | 9.7% | —Held | |
| 2 | Amazon Com Inc Stock | $12.3M | 51.8K | 7.9% | —Held | |
| 3 | Alphabet Inc Cap STK CL A Stock | $8.3M | 23.2K | 5.3% | —Held | |
| 4 | Microsoft Corp Stock | $8.2M | 21.9K | 5.2% | ▼−1.5% Reduced · −325 sh | |
| 5 | Alphabet Inc Cap STK CL C Stock | $8.0M | 22.6K | 5.1% | —Held | |
| 6 | Moodys Corp Stock | $6.2M | 13.6K | 3.9% | —Held | |
| 7 | Electrovaya Inc Stock | $3.4M | 326.2K | 2.2% | ▲+10% Added · +31K sh | |
| 8 | Cryoport Inc Com Par $0.001 Stock | $3.2M | 202.7K | 2.0% | ▲+9.1% Added · +17K sh | |
| 9 | Viemed Healthcare Inc Stock | $3.2M | 277.2K | 2.0% | ▲+1.8% Added · +5K sh | |
| 10 | Marvell Technology Inc Stock | $2.9M | 9.7K | 1.8% | —Held | |
| 11 | Photronics Inc Stock | $2.9M | 89.1K | 1.8% | ▼−7.9% Reduced · −8K sh | |
| 12 | Seabridge Gold Inc Stock | $2.9M | 110.9K | 1.8% | ▲New New position | |
| 13 | Extreme Networks Inc Stock | $2.7M | 84.0K | 1.7% | ▲+0.6% Added · +500 sh | |
| 14 | Planet Labs PBC Com CL A Stock | $2.7M | 81.8K | 1.7% | ▼−23% Reduced · −24K sh | |
| 15 | Prothena Corp PLC SHS Stock | $2.7M | 271.7K | 1.7% | —Held | |
| 16 | Alkami Technology Inc Stock | $2.5M | 140.6K | 1.6% | ▲+10% Added · +13K sh | |
| 17 | Allot Ltd SHS Stock | $2.4M | 275.3K | 1.6% | ▲New New position | |
| 18 | Cisco Sys Inc Stock | $2.2M | 18.4K | 1.4% | —Held | |
| 19 | Blackstone Inc Stock | $2.1M | 18.1K | 1.4% | —Held | |
| 20 | Magnite Inc Stock | $2.1M | 112.0K | 1.4% | ▼−0.1% Reduced · −150 sh | |
| 21 | Axcelis Technologies Inc Stock | $2.1M | 10.9K | 1.3% | ▼−9.9% Reduced · −1K sh | |
| 22 | Curiositystream Inc Com CL A Stock | $2.0M | 764.8K | 1.3% | ▲+13% Added · +90K sh | |
| 23 | Thomson Reuters Corp Stock | $2.0M | 24.4K | 1.3% | ▲New New position | |
| 24 | Nuveen N Y Mun Value FD CEF | $1.9M | 213.7K | 1.2% | —Held | |
| 25 | Vermilion Energy Inc Stock | $1.9M | 197.8K | 1.2% | —Held | |
| 26 | Targa Res Corp Stock | $1.8M | 6.9K | 1.2% | —Held | |
| 27 | Berkshire Hathaway Inc Del CL B New Stock | $1.6M | 3.3K | 1.1% | ▼−0.3% Reduced · −10 sh | |
| 28 | Baytex Energy Corp Stock | $1.6M | 399.4K | 1.0% | ▲New New position | |
| 29 | Energy Transfer L P Com Ut Ltd PTN Stock | $1.4M | 74.5K | 0.9% | —Held | |
| 30 | Williams Cos Inc Stock | $1.4M | 19.1K | 0.9% | —Held | |
| 31 | Automatic Data Processing Inc Stock | $1.4M | 6.3K | 0.9% | —Held | |
| 32 | Data I O Corp Stock | $1.4M | 355.9K | 0.9% | ▼−0.3% Reduced · −1K sh | |
| 33 | Sony Group Corp Sponsored ADR ADR | $1.4M | 68.5K | 0.9% | —Held | |
| 34 | Abbvie Inc Stock | $1.3M | 5.2K | 0.8% | ▼−0.3% Reduced · −18 sh | |
| 35 | Verizon Communications Inc Stock | $1.3M | 30.4K | 0.8% | ▲+1.8% Added · +525 sh | |
| 36 | Airbnb Inc Com CL A Stock | $1.3M | 8.9K | 0.8% | —Held | |
| 37 | State Street SPDR S&P 500 ETF ETF | $1.2M | 1.6K | 0.8% | —Held | |
| 38 | Mesoblast Ltd Spons ADR ADR | $1.2M | 87.1K | 0.8% | —Held | |
| 39 | Hess Midstream LP CL A SHS Stock | $1.1M | 30.1K | 0.7% | —Held | |
| 40 | Biolife Solutions Inc Stock | $1.1M | 39.7K | 0.7% | ▲+71% Added · +17K sh | |
| 41 | Doubleverify Hldgs Inc Stock | $1.1M | 102.7K | 0.7% | ▼−0.2% Reduced · −250 sh | |
| 42 | USA Compression Partners LP Com Unit Ltdpar Stock | $1.1M | 41.0K | 0.7% | —Held | |
| 43 | NPK International Inc Com SHS Stock | $1.1M | 67.8K | 0.7% | ▲+0.8% Added · +575 sh | |
| 44 | Nvidia Corporation Stock | $1.1M | 5.3K | 0.7% | ▲+1.9% Added · +100 sh | |
| 45 | Oneok Inc Stock | $983K | 11.3K | 0.6% | —Held | |
| 46 | Meta Platforms Inc CL A Stock | $958K | 1.7K | 0.6% | —Held | |
| 47 | Kulicke & Soffa Inds Inc Stock | $950K | 7.1K | 0.6% | —Held | |
| 48 | Par Technology Corp Stock | $936K | 53.8K | 0.6% | ▲+50% Added · +18K sh | |
| 49 | Popular Inc Com New Stock | $870K | 5.3K | 0.6% | ▼−3.6% Reduced · −200 sh | |
| 50 | Novartis AG Sponsored ADR ADR | $868K | 5.5K | 0.6% | —Held |
This fund page is the Follow view. The Build view lets your agent pull holdings, quarter changes, overlap, and source filings through API or MCP.
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Use Arkolith to show Penbrook Management LLC's latest holdings, largest changes, and filing provenance.
As-of date vs the date the SEC received each filing
Reported 13F total per quarter. Raw filing totals can include option notional.
| Quarter | As of | Filed | Lag | Positions | Value | Form |
|---|---|---|---|---|---|---|
| Q2 2026 | Jun 30, 2026 | Jul 23, 2026 | 23d | 101 | $156.8M | 13F-HR |
| Q1 2026 | Mar 31, 2026 | Apr 21, 2026 | 21d | 93 | $132.1M | 13F-HR |
| Q4 2025 | Dec 31, 2025 | Jan 6, 2026 | 6d | 97 | $145.0M | 13F-HR |
| Q3 2025 | Sep 30, 2025 | Oct 22, 2025 | 22d | 104 | $143.2M | 13F-HR |
| Q2 2025 | Jun 30, 2025 | Jul 28, 2025 | 28d | 102 | $133.0M | 13F-HR/A |
| Q1 2025 | Mar 31, 2025 | Apr 1, 2025 | 1d | 107 | $132.3M | 13F-HR |
| Q4 2024 | Dec 31, 2024 | Jan 23, 2025 | 23d | 110 | $146.6M | 13F-HR |
Holdings from SEC EDGAR 13F-HR filings, updated quarterly, filed up to 45 days after quarter-end. Public domain. Book totals and portfolio weights cover reported non-option positions, which can include notes and warrants. Disclosed put/call options are listed separately and excluded from those totals. Price-derived performance is withheld until the price-source policy and freshness gate are green.