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Penbrook Management LLC

CIK 1381055 · latest 13F filed 16 October 2026 · Read the filing on EDGAR

Penbrook Management LLC reported 102 US-listed holdings worth $169.5 million in its 13F for the quarter ended 30 September 2026, filed 16 October 2026. Its largest: Targa Resources Corp. (10.6%), Amazon.com Inc. (7.6%) and Novo Nordisk A/S (7.0%). Against the quarter before, it opened 6 positions, added to 12, trimmed 34 and sold out of 5.

Reported holdings$169.5M+8.1% on Q2 2026
Positions102+1 on Q2 2026
The largest ten50.4%of its reported holdings
Latest 13FQ3 2026filed 16 October 2026
Where the money is
Added toHeldTrimmed
TRGP10.6%AMZN7.6%NVO7.0%MSFT6.6%GOOGL4.7%GOOG4.5%MCO3.6%CYRX2.1%ALLT1.9%SA1.9%PLAB1.6%MGNI1.6%MRVL1.5%VMD1.5%88 more43.5%

The 14 largest of its 102 positions, each sized by its share of the reported holdings, coloured by the change in shares against Q2 2026.

Reported holdings, quarter by quarter
Q3 2024: $153.8 million in 104 positions$154MQ3 24Q4 2024: $146.6 million in 110 positions$147MQ4 24Q1 2025: $132.3 million in 107 positions$132MQ1 25Q2 2025: $265.3 million in 111 positions$265MQ2 25Q3 2025: $143.2 million in 104 positions$143MQ3 25Q4 2025: $145.0 million in 97 positions$145MQ4 25Q1 2026: $132.1 million in 93 positions$132MQ1 26Q2 2026: $156.8 million in 101 positions$157MQ2 26Q3 2026: $169.5 million in 102 positions$169MQ3 26

What the fund reported holding at each quarter's end; hover a bar for the number of positions

What its reported holdings returned

Held through each quarter, the holdings it reported returned +16.2% over the 8 quarters to 30 September 2026, against +32.9% for the S&P 500.

Its reported holdingsThe S&P 500
90105120135Q3 24Q4 24Q1 25Q2 25Q3 25Q4 25Q1 26Q2 26Q3 26Its holdings +16.2%S&P 500 +32.9%

Not the fund's own return: each 13F's holdings are kept unchanged until the next one, so trades inside a quarter, dividends, cash and fees are left out. A rough guide to how its picks have done over time.

What it did on the quarter

Opened 6Added 12Held 50Trimmed 34Sold out 5
Opened: 6Added: 12Held: 50Trimmed: 34Sold out: 5

Its positions against its 13F for the quarter to 30 June 2026; a change under 0.1% of a position counts as held

Opened 6

  1. ONEOK Inc. OKE$964,403
  2. Lockheed Martin Corp. LMT$280,087
  3. ExxonMobil Holdings Corp. XOM$208,320
  4. Newmont Corp. NEM$205,305
  5. Exagen Inc. XGN$91,869
  6. Bridger Aerospace GRP Hldgs BAER$57,519

Added to 12

  1. Sky Harbour Group Corporatio SKYH+177,670 shares · +910%
  2. Allot Ltd ALLT+102,100 shares · +37%
  3. Cenovus Energy Inc. CVE+12,820 shares · +43%
  4. Electrovaya Inc. ELVA+53,375 shares · +16%
  5. Tetra Technologies Inc. Del TTI+43,500 shares · +166%
  6. Par Technology Corp. PAR+9,940 shares · +18%
  7. International Business Machines Corp. IBM+200 shares · +16%
  8. Lincoln Edl Svcs Corp. LINC+1,400 shares · +11%

and 4 more in the table below

Trimmed 34

  1. Curiositystream Inc. CURI-376,250 shares · -49%
  2. Targa Resources Corp. TRGP-275 shares · -4%
  3. Iovance Biotherapeutics Inc. IOVA-20,750 shares · -33%
  4. Paysign Inc. PAYS-17,890 shares · -31%
  5. Novo Nordisk A/S NVO-4,700 shares · -1%
  6. Magnite Inc. MGNI-6,350 shares · -6%
  7. Biolife Solutions Inc. BLFS-2,810 shares · -7%
  8. Microsoft Corp. MSFT-200 shares · -1%

and 26 more in the table below

Sold out of 5

  1. DoubleVerify Holdings, Inc. DV$1.1 million last quarter
  2. ONEOK Inc. OKE$983,291 last quarter
  3. Antero Midstream Corp. AM$225,225 last quarter
  4. First American Financial Corp. FAF$205,770 last quarter
  5. Ondas Hldgs Inc. ONDS$82,441 last quarter

What it holds

CompanySharesValueOf its bookChange in shares
Targa Resources Corp. TRGP6.6K$17.9 million10.55%-275
Amazon.com Inc. AMZN51.8K$12.9 million7.61%no change
Novo Nordisk A/S NVO311.5K$11.8 million6.97%-4.7K
Microsoft Corp. MSFT21.7K$11.1 million6.57%-200
Alphabet Inc. GOOGL23.2K$8.0 million4.70%no change
Alphabet Inc. GOOG22.5K$7.7 million4.51%-100
Moody's Corp. MCO13.6K$6.2 million3.64%no change
Cryoport Inc. CYRX201.1K$3.5 million2.06%-1.6K
Allot Ltd ALLT377.4K$3.2 million1.88%+102.1K
Seabridge Gold Inc. Com SA110.7K$3.1 million1.85%-175
Photronics Inc. PLAB88.9K$2.7 million1.61%-200
Magnite Inc. MGNI105.7K$2.7 million1.58%-6.3K
Marvell Technology, Inc. MRVL9.7K$2.6 million1.52%no change
Viemed Healthcare Inc. VMD275.9K$2.5 million1.48%-1.2K
Electrovaya Inc. ELVA379.6K$2.5 million1.47%+53.4K
Thomson Reuters Corporation TRI24.4K$2.4 million1.40%no change
Prothena Corp. PLC PRTA271.7K$2.3 million1.34%no change
Vermilion Energy Inc. VET197.8K$2.3 million1.33%no change
Blackstone Inc. BX18.1K$2.0 million1.20%no change
Cisco Systems, Inc. CSCO18.4K$2.0 million1.17%no change
Alkami Technology Inc. ALKT138.0K$1.9 million1.11%-2.6K
Sky Harbour Group Corporatio SKYH197.2K$1.9 million1.10%+177.7K
Baytex Energy Corp. BTE399.4K$1.8 million1.07%no change
Extreme Networks Inc. EXTR84.0K$1.8 million1.06%no change
Nuveen N Y Mun Value FD NNY213.7K$1.7 million0.98%no change
Sony Group Corporation SONY69.5K$1.6 million0.96%+1.0K
Automatic Data Processing Inc. ADP6.3K$1.6 million0.96%no change
Berkshire Hathaway Inc. Class B BRKB3.2K$1.6 million0.95%-50
Energy Transfer LP ET74.3K$1.5 million0.87%-196
Biolife Solutions Inc. BLFS36.9K$1.4 million0.85%-2.8K
Airbnb, Inc. ABNB8.8K$1.4 million0.83%-200
Verizon Communications Inc. VZ30.4K$1.4 million0.82%no change
Axcelis Technologies Inc. ACLS10.5K$1.4 million0.81%-400
AbbVie Inc. ABBV5.3K$1.4 million0.81%+100
Planet Labs PBC PL81.4K$1.3 million0.79%-400
Cenovus Energy Inc. CVE42.7K$1.3 million0.78%+12.8K
Williams Companies, Inc. WMB19.1K$1.3 million0.77%-50
Mesoblast Ltd MESO87.1K$1.3 million0.75%no change
Meta Platforms, Inc. META1.7K$1.2 million0.73%no change
SPDR S&P 500 SPY1.6K$1.2 million0.72%no change
NVIDIA Corp. NVDA5.3K$1.2 million0.71%-45
Curiositystream Inc. CURI388.6K$1.1 million0.67%-376.2K
Hess Midstream LP HESM30.0K$1.1 million0.66%-50
Data I O Corp. DAIO355.9K$1.0 million0.62%no change
USA Compression Partners LP USAC41.0K$1.0 million0.60%no change
ONEOK Inc. OKE11.3K$964,4030.57%new
Shell plc SHEL9.4K$893,4700.53%no change
Par Technology Corp. PAR63.7K$876,5120.52%+9.9K
Popular Inc. BPOP5.3K$823,8850.49%no change
Emerson Electric Co. EMR5.3K$822,0300.48%no change
Novartis AG NVS5.5K$789,8370.47%no change
Newpark Res Inc. NPKI67.3K$768,8510.45%-500
Backblaze Inc. BLZE51.9K$726,0810.43%-1.8K
Western Midstream Partners L WES15.9K$705,4830.42%no change
Invesco QQQ Trust QQQ925$684,2870.40%no change
Etfs Gold Trust SGOL17.1K$675,6840.40%no change
Kulicke & Soffa Industries Inc. KLIC7.1K$669,1750.39%no change
Amplitude Inc. AMPL48.0K$664,1760.39%-750
Asure Software Inc. ASUR87.7K$663,9260.39%-430
Iovance Biotherapeutics Inc. IOVA41.2K$610,5090.36%-20.8K
First Bancorp FBP22.6K$595,2840.35%no change
Regeneron Pharmaceuticals, Inc. REGN785$595,2410.35%no change
Paysign Inc. PAYS39.4K$531,3810.31%-17.9K
Range Resources Corp. RRC14.1K$521,8930.31%-150
Aehr Test Sys AEHR5.2K$518,0240.31%no change
Apple Inc. AAPL1.5K$509,1870.30%no change
Hercules Capital Inc. HTGC29.8K$500,7040.30%+399
Power Integrations Inc. POWI9.2K$476,5600.28%no change
Putnam Master Inter Income Trust SH Ben Int PIM152.1K$459,2300.27%+5.0K
Dorchester Minerals LP DMLP16.2K$454,9490.27%no change
iShares Trust TLT5.4K$418,8450.25%-125
Bristol-Myers Squibb Co. BMY6.6K$412,7760.24%no change
Tetra Technologies Inc. Del TTI69.8K$409,4910.24%+43.5K
Enterprise Products Partners LP EPD11.4K$406,9150.24%no change
Kopin Corp. KOPN83.0K$381,6850.23%-5.3K
Invesco Exchange Traded FD T RSP1.7K$347,3930.20%no change
Rithm Capital Corp. RITM38.3K$342,3570.20%-863
Fidelity National Financial, Inc. FNF8.7K$335,0180.20%no change
One Stop System OSS38.2K$333,4860.20%-675
International Business Machines Corp. IBM1.5K$326,1560.19%+200
Lincoln Edl Svcs Corp. LINC14.1K$308,6950.18%+1.4K
Chevron Corp. CVX1.4K$281,1970.17%no change
Lockheed Martin Corp. LMT550$280,0870.17%new
SPDR Ser Trust SPYM3.1K$276,0120.16%no change
ConocoPhillips COP2.0K$253,4280.15%no change
Merck & Co., Inc. MRK1.7K$247,0270.15%no change
Teradyne, Inc. TER600$240,5460.14%no change
John Wiley & Sons, Inc. WLY5.0K$238,8000.14%no change
J P Morgan Exchange Traded F JEPI4.2K$237,5290.14%no change
Golub Cap BDC Inc. GBDC17.9K$226,4550.13%-130
JPMorgan Chase & Co. JPM660$218,3470.13%no change
Reaves Util Income FD UTG6.1K$210,3930.12%no change
ExxonMobil Holdings Corp. XOM1.3K$208,3200.12%new
Newmont Corp. NEM1.8K$205,3050.12%new
Aquestive Therapeutics Inc. AQST41.4K$191,4500.11%-1.9K
Barnes & Noble Ed Inc. BNED15.0K$173,8500.10%no change
Invesco Municipal Trust VKQ20.0K$169,6000.10%no change
Nuveen Mun Value FD Inc. NUV20.0K$165,8000.10%no change
Dynex CAP INC COM (dx) DX10.1K$111,9570.07%no change
Exagen Inc. XGN11.3K$91,8690.05%new
Profound Med Corp. Com New PROF11.4K$65,9750.04%-700
Bridger Aerospace GRP Hldgs BAER81.9K$57,5190.03%new
Every US-listed position in the fund's 13F for the quarter ended 30 September 2026, by the value it reported.
Read moreChange is shares against its 13F for the quarter before; the 5 it sold out of are in the box above.