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Penbrook Management LLC Portfolio
$169.5M across 102 positions as of 2026-09-30, with 50% of it in the ten largest. 4 quarters on file.
How the reported portfolio did
Each 13F's long stock positions, held to the next quarter's end, against the S&P 500. Yearly rates, on closes without dividends.
1 year
+9.4%
-5.1% a year vs the S&P 500
3 years
+10.4%
-10.8% a year vs the S&P 500
5 years
+8.0%
-4.2% a year vs the S&P 500
Quarters ahead
10 of 21
| Quarter | Portfolio | S&P 500 |
|---|---|---|
| Jun 30, 2026 to Sep 30, 2026 | -0.3% | +2.1% |
| Mar 31, 2026 to Jun 30, 2026 | +15.3% | +14.8% |
| Dec 31, 2025 to Mar 31, 2026 | -7.9% | -4.6% |
| Sep 30, 2025 to Dec 31, 2025 | +3.3% | +2.4% |
| Jun 30, 2025 to Sep 30, 2025 | +1.9% | +7.8% |
| Mar 31, 2025 to Jun 30, 2025 | +7.9% | +10.5% |
| Dec 31, 2024 to Mar 31, 2025 | -9.1% | -4.6% |
| Sep 30, 2024 to Dec 31, 2024 | -4.8% | +2.1% |
Largest first
Share is of this manager's reported book. A holding with no symbol is one this site does not track as a company; the filing's own name for it is shown instead.
| Holding | Value | Share | Shares |
|---|---|---|---|
| TRGPTarga Resources Corp | $17.9M | 10.6% | 6,617 |
| AMZNAmazon.com Inc | $12.9M | 7.6% | 51,760 |
| NVONovo Nordisk A/S | $11.8M | 7.0% | 311,500 |
| MSFTMicrosoft Corp | $11.1M | 6.6% | 21,720 |
| GOOGLAlphabet Inc | $8M | 4.7% | 23,170 |
| GOOGAlphabet Inc | $7.7M | 4.5% | 22,454 |
| MCOMoody's Corp | $6.2M | 3.6% | 13,600 |
| CYRXCryoport Inc | $3.5M | 2.1% | 201,085 |
| ALLOT LTD SHS | $3.2M | 1.9% | 377,395 |
| SEABRIDGE GOLD INC | $3.1M | 1.9% | 110,740 |
| PHOTRONICS INC | $2.7M | 1.6% | 88,855 |
| MAGNITE INC | $2.7M | 1.6% | 105,690 |
| MRVLMarvell Technology Inc | $2.6M | 1.5% | 9,730 |
| VIEMED HEALTHCARE INC | $2.5M | 1.5% | 275,948 |
| ELECTROVAYA INC | $2.5M | 1.5% | 379,606 |
| TRIThomson Reuters Corp | $2.4M | 1.4% | 24,381 |
| PROTHENA CORP PLC SHS | $2.3M | 1.3% | 271,720 |
| VETVermilion Energy Inc | $2.3M | 1.3% | 197,825 |
| BXBlackstone Inc | $2M | 1.2% | 18,150 |
| CSCOCisco Systems Inc | $2M | 1.2% | 18,350 |
| ALKTAlkami Technology Inc | $1.9M | 1.1% | 138,010 |
| SKY HARBOUR GROUP CORPORATION | $1.9M | 1.1% | 197,200 |
| BTEBaytex Energy Corp Common Shares | $1.8M | 1.1% | 399,350 |
| EXTREME NETWORKS INC | $1.8M | 1.1% | 84,025 |
| NUVEEN N Y MUN VALUE FD | $1.7M | 1.0% | 213,727 |
| SONYSony Group Corp | $1.6M | 1.0% | 69,500 |
| ADPAutomatic Data Processing Inc | $1.6M | 1.0% | 6,300 |
| BRK.BBerkshire Hathaway Inc | $1.6M | 1.0% | 3,240 |
| ETEnergy Transfer LP | $1.5M | 0.9% | 74,293 |
| BLFSBioLife Solutions Inc | $1.4M | 0.8% | 36,895 |
| ABNBAirbnb Inc | $1.4M | 0.8% | 8,750 |
| VZVerizon Communications Inc | $1.4M | 0.8% | 30,424 |
| AXCELIS TECHNOLOGIES INC | $1.4M | 0.8% | 10,495 |
| ABBVAbbVie Inc | $1.4M | 0.8% | 5,252 |
| PLPlanet Labs PBC | $1.3M | 0.8% | 81,417 |
| CENOVUS ENERGY INC | $1.3M | 0.8% | 42,700 |
| WMBWilliams Companies Inc | $1.3M | 0.8% | 19,080 |
| MESOBLAST LTD SPONS ADR | $1.3M | 0.8% | 87,075 |
| METAMeta Platforms Inc | $1.2M | 0.7% | 1,700 |
| SPYState Street SPDR S&P 500 ETF Trust | $1.2M | 0.7% | 1,605 |
| NVDANVIDIA Corp | $1.2M | 0.7% | 5,278 |
| CURIOSITYSTREAM INC CL A | $1.1M | 0.7% | 388,550 |
| HESS MIDSTREAM LP CL A SHS | $1.1M | 0.7% | 30,005 |
| DATA I O CORP | $1M | 0.6% | 355,850 |
| USACUSA Compression Partners LP | $1M | 0.6% | 41,038 |
| OKEONEOK Inc | $964.4K | 0.6% | 11,310 |
| SHELShell PLC | $893.5K | 0.5% | 9,400 |
| PARPAR Technology Corp | $876.5K | 0.5% | 63,700 |
| POPULAR INC | $823.9K | 0.5% | 5,300 |
| EMREmerson Electric Co | $822K | 0.5% | 5,300 |
| NVSNovartis AG | $789.8K | 0.5% | 5,540 |
| NPK INTERNATIONAL INC | $768.9K | 0.5% | 67,325 |
| BACKBLAZE INC | $726.1K | 0.4% | 51,900 |
| WESWestern Midstream Partners LP | $705.5K | 0.4% | 15,900 |
| QQQInvesco QQQ Trust, Series 1 | $684.3K | 0.4% | 925 |
| SGOLABRDN PHYSICAL GOLD SHARES ETF | $675.7K | 0.4% | 17,080 |
| KLICKulicke and Soffa Industries Inc | $669.2K | 0.4% | 7,100 |
| AMPLITUDE INC | $664.2K | 0.4% | 47,955 |
| ASURE SOFTWARE INC | $663.9K | 0.4% | 87,705 |
| IOVANCE BIOTHERAPEUTICS INC | $610.5K | 0.4% | 41,195 |
| FBPFirst BanCorp | $595.3K | 0.4% | 22,600 |
| REGNRegeneron Pharmaceuticals Inc | $595.2K | 0.4% | 785 |
| PAYSIGN INC | $531.4K | 0.3% | 39,420 |
| RRCRange Resources Corp | $521.9K | 0.3% | 14,090 |
| AEHR TEST SYS | $518K | 0.3% | 5,200 |
| AAPLApple Inc | $509.2K | 0.3% | 1,529 |
| HTGCHercules Capital Inc | $500.7K | 0.3% | 29,786 |
| POWIPower Integrations Inc | $476.6K | 0.3% | 9,200 |
| FRANKLIN MASTER INTER INCOME SH BEN INT | $459.2K | 0.3% | 152,063 |
| DMLPDorchester Minerals LP | $454.9K | 0.3% | 16,225 |
| TLTiShares 20+ Year Treasury Bond ETF | $418.8K | 0.2% | 5,385 |
| BMYBristol-Myers Squibb Co | $412.8K | 0.2% | 6,615 |
| TETRA TECHNOLOGIES INC DEL | $409.5K | 0.2% | 69,760 |
| EPDEnterprise Products Partners L.P | $406.9K | 0.2% | 11,427 |
| KOPIN CORP | $381.7K | 0.2% | 82,975 |
| RSPInvesco S&P 500 Equal Weight ETF | $347.4K | 0.2% | 1,670 |
| RITMRithm Capital Corp | $342.4K | 0.2% | 38,337 |
| FNFFidelity National Financial Inc | $335K | 0.2% | 8,668 |
| ONE STOP SYS INC | $333.5K | 0.2% | 38,200 |
| IBMInternational Business Machines Corp | $326.2K | 0.2% | 1,483 |
| LINCOLN EDL SVCS CORP | $308.7K | 0.2% | 14,115 |
| CVXChevron Corp | $281.2K | 0.2% | 1,377 |
| LMTLockheed Martin Corp | $280.1K | 0.2% | 550 |
| SPYMState Street SPDR Portfolio S&P 500 ETF | $276K | 0.2% | 3,075 |
| COPConocoPhillips | $253.4K | 0.1% | 2,025 |
| MRKMerck & Co Inc | $247K | 0.1% | 1,700 |
| TERTeradyne Inc | $240.5K | 0.1% | 600 |
| WILEY JOHN & SONS INC CL A | $238.8K | 0.1% | 5,000 |
| JEPIJPMorgan Equity Premium Income ETF | $237.5K | 0.1% | 4,225 |
| GBDCGolub Capital BDC Inc | $226.5K | 0.1% | 17,930 |
| JPMJPMorgan Chase & Co | $218.3K | 0.1% | 660 |
| REAVES UTIL INCOME FD | $210.4K | 0.1% | 6,125 |
| XOMExxonmobil Holdings Corp | $208.3K | 0.1% | 1,280 |
| NEMNewmont Corporation | $205.3K | 0.1% | 1,780 |
| AQUESTIVE THERAPEUTICS INC | $191.5K | 0.1% | 41,350 |
| BARNES & NOBLE ED INC | $173.9K | 0.1% | 15,000 |
| INVESCO MUNICIPAL TRUST | $169.6K | 0.1% | 20,000 |
| NUVEEN MUN VALUE FD INC | $165.8K | 0.1% | 20,000 |
| DYNEX CAP INC | $112K | 0.1% | 10,050 |
| EXAGEN INC | $91.9K | 0.1% | 11,300 |
| PROFProfound Medical Corp | $66K | 0.0% | 11,375 |
| BRIDGER AEROSPACE GRP HLDGS IN | $57.5K | 0.0% | 81,925 |
Quarter ending 2026-09-30.
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