Penbrook Management LLC
Long book
$132.1M
Q1 2026
Positions
93
Top-10 weight
47%
concentration
Last quarter
+18.6%
SPY +14.8%
Turnover
19%
of book per quarter
Strategy in plain words
auto-generated from filingsPenbrook Management LLC is a diversified fundamental manager, running a $132.1M US long book across 93 positions.
The portfolio is moderately concentrated (top 10 ≈ 47% of the book). Turnover is modest: positions are typically held for years. Current anchor positions: NOVO-NORDISK A/S-SPONS ADR, AMAZON.COM INC, MICROSOFT CORP, ALPHABET INC-CL A, ALPHABET INC-CL C.
Over the last 9 quarters its long book ran on average 1.9pp per quarter behind the S&P 500, beating the index in 3 of 9 quarters. We rate its filings as signal-bearing: position changes reflect genuine views.
Implied long-book return vs S&P 500
methodology: positions priced quarterly, no shorts/options Fund long book S&P 500
Q1 2024
+4.2%
Q2 2024
-2.7%
Q3 2024
-3.4%
Q4 2024
-9.1%
Q1 2025
+9.3%
Q2 2025
+6.3%
Q3 2025
+3.1%
Q4 2025
-3.0%
Q1 2026
+18.6%
Sector allocation
Technology 45%
Services media 10%
Consumer discretionary 10%
Healthcare 9%
Utilities 7%
Energy 6%
Financials 5%
Other 3%
Long book by quarter
What does Penbrook Management own?
Q1 2026 13F| Company | Sector | Shares | Value | % of book | Change |
|---|---|---|---|---|---|
| AMZN AMAZON.COM INC | Consumer discretionary | 51.8K | $10.8M | 8.2% | Held |
| MSFT MICROSOFT CORP | Technology | 22.2K | $8.2M | 6.2% | -2.2% |
| GOOGL ALPHABET INC-CL A | Technology | 23.2K | $6.7M | 5.0% | Held |
| GOOG ALPHABET INC-CL C | Technology | 22.6K | $6.5M | 4.9% | Held |
| MCO MOODY'S CORP | Services media | 13.6K | $5.9M | 4.5% | Held |
| PLAB PHOTRONICS INC | Technology | 96.7K | $3.9M | 3.0% | -12.6% |
| PL PLANET LABS PBC | Technology | 105.9K | $3.0M | 2.2% | -64.1% |
| AEHR AEHR TEST SYSTEMS | Technology | 79.5K | $2.9M | 2.2% | -30.8% |
| SA SEABRIDGE GOLD INC | Materials | 96.0K | $2.7M | 2.1% | Held |
| VET VERMILION ENERGY INC | Energy | 197.8K | $2.7M | 2.1% | Held |
| PRTA PROTHENA CORP PLC | Healthcare | 271.7K | $2.6M | 2.0% | New |
| VMD VIEMED HEALTHCARE INC | Healthcare | 272.4K | $2.5M | 1.9% | +0.3% |
| ELVA ELECTROVAYA INC | Technology | 295.4K | $2.3M | 1.7% | -15.6% |
| TRI4EUR THOMSON REUTERS CORP | — | 24.8K | $2.2M | 1.7% | -0.7% |
| BX BLACKSTONE INC | Financials | 18.1K | $2.1M | 1.6% | +22.6% |
| ALKT ALKAMI TECHNOLOGY INC | Technology | 127.7K | $2.0M | 1.5% | Held |
| CURI CURIOSITYSTREAM INC | Services media | 675.1K | $2.0M | 1.5% | +94.4% |
| TRGP TARGA RESOURCES CORP | Utilities | 6.9K | $1.7M | 1.3% | -1.9% |
| BRK/B BERKSHIRE HATHAWAY INC-CL B | Financials | 3.3K | $1.6M | 1.2% | -1.5% |
| CYRX CRYOPORT INC | Healthcare | 185.8K | $1.5M | 1.2% | +251.6% |
| VZ VERIZON COMMUNICATIONS INC | Communications | 29.9K | $1.5M | 1.1% | -4.0% |
| ET ENERGY TRANSFER LP | Utilities | 74.5K | $1.4M | 1.1% | Held |
| CSCO CISCO SYSTEMS INC | Technology | 18.4K | $1.4M | 1.1% | Held |
| WMB WILLIAMS COS INC | Utilities | 19.1K | $1.4M | 1.1% | Held |
| MGNI MAGNITE INC | Technology | 112.2K | $1.3M | 1.0% | +260.6% |
| ADP AUTOMATIC DATA PROCESSING | Technology | 6.3K | $1.3M | 1.0% | Held |
| EXTR EXTREME NETWORKS INC | Technology | 83.5K | $1.3M | 1.0% | New |
| HESM HESS MIDSTREAM LP - CLASS A | Energy | 30.1K | $1.2M | 0.9% | Held |
| ABNB AIRBNB INC-CLASS A | Services media | 8.9K | $1.1M | 0.9% | Held |
| ACLS AXCELIS TECHNOLOGIES INC | Industrials | 12.1K | $1.1M | 0.9% | -23.9% |
| ABBV ABBVIE INC | Healthcare | 5.2K | $1.1M | 0.9% | -1.1% |
| USAC USA COMPRESSION PARTNERS LP | Utilities | 41.0K | $1.1M | 0.8% | Held |
| OKE ONEOK INC | Utilities | 11.3K | $1.0M | 0.8% | Held |
| DV DOUBLEVERIFY HOLDINGS INC | Technology | 102.9K | $978K | 0.7% | Held |
| NPKI NPK INTERNATIONAL INC | Services media | 67.3K | $974K | 0.7% | Held |
| META META PLATFORMS INC-CLASS A | Technology | 1.7K | $973K | 0.7% | Held |
| MRVL MARVELL TECHNOLOGY INC | Technology | 9.7K | $964K | 0.7% | Held |
| NVDA NVIDIA CORP | Technology | 5.2K | $911K | 0.7% | Held |
| DAIO DATA I/O CORP | Technology | 356.9K | $903K | 0.7% | Held |
| CVE CENOVUS ENERGY INC | Energy | 29.9K | $793K | 0.6% | Held |
| ASUR ASURE SOFTWARE INC | Technology | 89.6K | $771K | 0.6% | +0.4% |
| BPOP POPULAR INC | Financials | 5.5K | $738K | 0.6% | -53.6% |
| EMR EMERSON ELECTRIC CO | Industrials | 5.3K | $694K | 0.5% | Held |
| WES WESTERN MIDSTREAM PARTNERS L | Utilities | 15.9K | $655K | 0.5% | Held |
| RRC RANGE RESOURCES CORP | Energy | 14.2K | $643K | 0.5% | Held |
| REGN REGENERON PHARMACEUTICALS | Healthcare | 785 | $607K | 0.5% | -1.5% |
| LINC LINCOLN EDUCATIONAL SERVICES | Services media | 12.7K | $518K | 0.4% | -25.2% |
| FBP FIRST BANCORP PUERTO RICO | Financials | 23.5K | $502K | 0.4% | -47.7% |
| PAR PAR TECHNOLOGY CORP/DEL | Technology | 35.8K | $477K | 0.4% | +80.5% |
| POWI POWER INTEGRATIONS INC | Technology | 9.2K | $471K | 0.4% | Held |
13F filing history
| Period | Form | Filed | Entries | Reported value | Flags | Source |
|---|---|---|---|---|---|---|
| Q1 2026 | 13F-HR | Apr 21, 2026 | 93 | $132.1M | canonical | SEC ↗ |
| Q4 2025 | 13F-HR | Jan 6, 2026 | 97 | $145.0M | canonical | SEC ↗ |
| Q3 2025 | 13F-HR | Oct 22, 2025 | 104 | $143.2M | canonical | SEC ↗ |
| Q2 2025 | 13F-HR/ANEW HOLDINGS | Jul 28, 2025 | 102 | $133.0M | canonical | SEC ↗ |
| Q2 2025 | 13F-HR | Jul 25, 2025 | 107 | $132.3M | canonical | SEC ↗ |
| Q1 2025 | 13F-HR | Apr 1, 2025 | 107 | $132.3M | canonical | SEC ↗ |
| Q4 2024 | 13F-HR | Jan 23, 2025 | 110 | $146.6M | canonical | SEC ↗ |
| Q3 2024 | 13F-HR | Oct 15, 2024 | 106 | $153.8M | canonical | SEC ↗ |
| Q2 2024 | 13F-HR | Jul 24, 2024 | 101 | $163.8M | canonical | SEC ↗ |
| Q1 2024 | 13F-HR | Apr 18, 2024 | 102 | $161.3M | canonical | SEC ↗ |
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