Penbrook Management LLC
Sector Allocation
- Technology37.4%$63.3M
- Energy19.6%$33.3M
- Healthcare14.7%$24.9M
- Consumer Discretionary7.9%$13.4M
- Financials7.6%$12.8M
- Other5.0%$8.5M
- Communication Services3.0%$5.1M
- Materials2.0%$3.3M
- Industrials1.4%$2.5M
- Real Estate1.4%$2.3M
AUM History
13fpro.ai/research/fund/penbrook-management-llc-1381055
Conviction and streaks
Concentrating · top 10 = 50.4%From the fund's last 12 quarters of 13F filings: positions held longest at size, and names it added to or trimmed several quarters running.
Largest positions — Q3 2026
TRGP
$17.9MAMZN
$12.9MNVO
$11.8MMSFT
$11.1MGOOGL
$8.0MGOOG
$7.7MMCO
$6.2MCYRX
$3.5MALLT
$3.2MSA
$3.1MPLAB
$2.7MMGNI
$2.7MMRVL
$2.6MVMD
$2.5MELVA
$2.5MTRI
$2.4M- PROTHENA$2.3M
VET
$2.3MBX
$2.0MCSCO
$2.0M
Top 20 stock positions. Options are left out: 13F reports them at the underlying's value.
13fpro.ai/research/fund/penbrook-management-llc-1381055
Penbrook Management LLC 13F holdings — Q3 2026
$169.5M portfolio (+8.1% QoQ) · 102 holdings · Q3 2026 13F · top 10 are 50% of the stock portfolio
$17.9M
10.6% of stocks
-4%This quarter+3.3%Since filed5+ qtrsHeld$12.9M
7.6% of stocks
No changeThis quarter-0.4%Since filed5+ qtrsHeld$11.8M
7.0% of stocks
-1%This quarter+0.8%Since filed5+ qtrsHeld$11.1M
6.6% of stocks
-0.9%This quarter+0.7%Since filed5+ qtrsHeld$8.0M
4.7% of stocks
No changeThis quarter-6.7%Since filed5+ qtrsHeld$7.7M
4.5% of stocks
-0.4%This quarter-6.7%Since filed5+ qtrsHeld$6.2M
3.6% of stocks
No changeThis quarter-0.1%Since filed5+ qtrsHeld$3.5M
2.1% of stocks
-0.8%This quarter+5.6%Since filed5+ qtrsHeld$3.2M
1.9% of stocks
+37%This quarter-0.4%Since filed2 qtrsHeldAIQualityAI quality score is Pro: unlock with a free trialEst. buyEstimated buy price is Pro: unlock with a free trialAdded 2 qtrs in a row$3.1M
1.9% of stocks
-0.2%This quarter-1.5%Since filed5+ qtrsHeld
All holdings — Penbrook Management LLC (Q3 2026)
102 disclosed positions from the Form 13F-HR on SEC EDGAR, with quarter-over-quarter share changes. Largest by value first; the ten above are not repeated.
| # | Company | Held | Source | |||||||
|---|---|---|---|---|---|---|---|---|---|---|
| 11 | PHOTRONICS INC | Technology | $2.7M | 1.6% | 89K | -0.2% | 5+ qtrs | AI quality score is Pro: unlock with a free trial | 13F | |
| 12 | MAGNITE, INC. | Technology | $2.7M | 1.6% | 106K | -6% | 5+ qtrs | AI quality score is Pro: unlock with a free trial | 13F | |
| 13 | Marvell Technology, Inc. | Technology | $2.6M | 1.5% | 9,730 | — | 5+ qtrs | AI quality score is Pro: unlock with a free trial | 13F | |
| 14 | VIEMED HEALTHCARE, INC. | Healthcare | $2.5M | 1.5% | 276K | -0.4% | 5+ qtrs | AI quality score is Pro: unlock with a free trial | 13F | |
| 15 | Electrovaya Inc. | Technology | $2.5M | 1.5% | 380K | +16% | 5+ qtrsAdded 2 qtrs in a row | AI quality score is Pro: unlock with a free trial | 13F | |
| 16 | THOMSON REUTERS CORP /CAN/ | Communication Services | $2.4M | 1.4% | 24K | — | 5+ qtrs | AI quality score is Pro: unlock with a free trial | 13F | |
| 17 | — | PROTHENA CORP PLC SHS - Stock | — | $2.3M | 1.3% | 272K | — | — | — | 13F |
| 18 | VERMILION ENERGY INC. | Energy | $2.3M | 1.3% | 198K | — | 5+ qtrs | AI quality score is Pro: unlock with a free trial | 13F | |
| 19 | Blackstone Inc. | Financials | $2.0M | 1.2% | 18K | — | 5+ qtrs | AI quality score is Pro: unlock with a free trial | 13F | |
| 20 | CISCO SYSTEMS, INC. | Technology | $2.0M | 1.2% | 18K | — | 5+ qtrs | AI quality score is Pro: unlock with a free trial | 13F | |
| 21 | ALKAMI TECHNOLOGY, INC. | Technology | $1.9M | 1.1% | 138K | -2% | 5+ qtrs | AI quality score is Pro: unlock with a free trial | 13F | |
| 22 | Sky Harbour Group Corp | Real Estate | $1.9M | 1.1% | 197K | +910% | 2 qtrsAdded 2 qtrs in a row | AI quality score is Pro: unlock with a free trial | 13F | |
| 23 | BAYTEX ENERGY CORP. | Energy | $1.8M | 1.1% | 399K | — | 2 qtrs | AI quality score is Pro: unlock with a free trial | 13F | |
| 24 | EXTREME NETWORKS INC | Technology | $1.8M | 1.1% | 84K | — | 3 qtrs | AI quality score is Pro: unlock with a free trial | 13F | |
| 25 | NUVEEN NEW YORK MUNICIPAL VALUE FUND | Other | $1.7M | 1.0% | 214K | — | 5+ qtrs | AI quality score is Pro: unlock with a free trial | 13F | |
| 26 | $SONY | Sony Group Corp | Technology | $1.6M | 1.0% | 70K | +1% | |||
| 27 | $ADP | AUTOMATIC DATA PROCESSING INC | Technology | $1.6M | 1.0% | 6,300 | — | |||
| 28 | $BRK.B | BERKSHIRE HATHAWAY INC | Financials | $1.6M | 0.9% | 3,240 | -2% | |||
| 29 | $ET | Energy Transfer LP | Energy | $1.5M | 0.9% | 74K | -0.3% | |||
| 30 | $BLFS | BIOLIFE SOLUTIONS INC | Healthcare | $1.4M | 0.8% | 37K | -7% | |||
| 31 | $ABNB | Airbnb, Inc. | Technology | $1.4M | 0.8% | 8,750 | -2% | |||
| 32 | $VZ | VERIZON COMMUNICATIONS INC | Communication Services | $1.4M | 0.8% | 30K | — | |||
| 33 | $ACLS | AXCELIS TECHNOLOGIES INC | Technology | $1.4M | 0.8% | 10K | -4% | |||
| 34 | $ABBV | AbbVie Inc. | Healthcare | $1.4M | 0.8% | 5,252 | +2% | |||
| 35 | $PL | Planet Labs PBC | Technology | $1.3M | 0.8% | 81K | -0.5% | |||
| 36 | $CVE | CENOVUS ENERGY INC. | Energy | $1.3M | 0.8% | 43K | +43% | |||
| 37 | $WMB | WILLIAMS COMPANIES, INC. | Energy | $1.3M | 0.8% | 19K | -0.3% | |||
| 38 | $MESO | MESOBLAST LTD | Healthcare | $1.3M | 0.8% | 87K | — | |||
| 39 | $META | Meta Platforms, Inc. | Technology | $1.2M | 0.7% | 1,700 | — | |||
| 40 | $SPY | SPDR S&P 500 ETF TRUST | — | $1.2M | 0.7% | 1,605 | — | |||
| 41 | $NVDA | NVIDIA CORP | Technology | $1.2M | 0.7% | 5,278 | -0.8% | |||
| 42 | $CURI | CuriosityStream Inc. | Communication Services | $1.1M | 0.7% | 389K | -49% | |||
| 43 | $HESM | Hess Midstream LP | Energy | $1.1M | 0.7% | 30K | -0.2% | |||
| 44 | $DAIO | DATA I/O CORP | Technology | $1.0M | 0.6% | 356K | — | |||
| 45 | $USAC | USA Compression Partners, LP | Energy | $1.0M | 0.6% | 41K | — | |||
| 46 | $OKE | ONEOK INC /NEW/ | Energy | $964K | 0.6% | 11K | — | |||
| 47 | $SHEL | Shell plc | Energy | $893K | 0.5% | 9,400 | — | |||
| 48 | $PAR | PAR TECHNOLOGY CORP | Technology | $877K | 0.5% | 64K | +18% | |||
| 49 | $BPOP | POPULAR, INC. | Financials | $824K | 0.5% | 5,300 | — | |||
| 50 | $EMR | EMERSON ELECTRIC CO | Industrials | $822K | 0.5% | 5,300 | — | |||
| 51 | $NVS | NOVARTIS AG | Healthcare | $790K | 0.5% | 5,540 | — | |||
| 52 | $NPKI | NPK International Inc. | Industrials | $769K | 0.5% | 67K | -0.7% | |||
| 53 | $BLZE | Backblaze, Inc. | Technology | $726K | 0.4% | 52K | -3% | |||
| 54 | $WES | Western Midstream Partners, LP | Energy | $705K | 0.4% | 16K | — | |||
| 55 | $QQQ | INVESCO QQQ TRUST, SERIES 1 | — | $684K | 0.4% | 925 | — | |||
| 56 | $SGOL | abrdn Gold ETF Trust | Financials | $676K | 0.4% | 17K | — | |||
| 57 | $KLIC | KULICKE & SOFFA INDUSTRIES INC | Technology | $669K | 0.4% | 7,100 | — | |||
| 58 | $AMPL | Amplitude, Inc. | Technology | $664K | 0.4% | 48K | -2% | |||
| 59 | $ASUR | ASURE SOFTWARE INC | Technology | $664K | 0.4% | 88K | -0.5% | |||
| 60 | $IOVA | IOVANCE BIOTHERAPEUTICS, INC. | Healthcare | $611K | 0.4% | 41K | -33% | |||
| 61 | $FBP | FIRST BANCORP /PR/ | Financials | $595K | 0.3% | 23K | — | |||
| 62 | $REGN | REGENERON PHARMACEUTICALS, INC. | Healthcare | $595K | 0.3% | 785 | — | |||
| 63 | $PAYS | Paysign, Inc. | Industrials | $531K | 0.3% | 39K | -31% | |||
| 64 | $RRC | RANGE RESOURCES CORP | Energy | $522K | 0.3% | 14K | -1% | |||
| 65 | $AEHR | AEHR TEST SYSTEMS | Technology | $518K | 0.3% | 5,200 | — | |||
| 66 | $AAPL | Apple Inc. | Technology | $509K | 0.3% | 1,529 | — | |||
| 67 | $HCXY | Hercules Capital, Inc. | Other | $501K | 0.3% | 30K | +1% | |||
| 68 | $POWI | POWER INTEGRATIONS INC | Technology | $477K | 0.3% | 9,200 | — | |||
| 69 | $PIM | FRANKLIN MASTER INTERMEDIATE INCOME TRUST | — | $459K | 0.3% | 152K | +3% | |||
| 70 | $DMLP | DORCHESTER MINERALS, L.P. | Energy | $455K | 0.3% | 16K | — | |||
| 71 | — | ISHARES 20 YEAR TREASURY BOND ETF - ETF | — | $419K | 0.3% | 5,385 | -2% | |||
| 72 | $BMY | BRISTOL MYERS SQUIBB CO | Healthcare | $413K | 0.2% | 6,615 | — | |||
| 73 | $TTI | TETRA TECHNOLOGIES INC | Energy | $409K | 0.2% | 70K | +166% | |||
| 74 | $EPD | ENTERPRISE PRODUCTS PARTNERS L.P. | Energy | $407K | 0.2% | 11K | — | |||
| 75 | $KOPN | KOPIN CORP | Technology | $382K | 0.2% | 83K | -6% | |||
| 76 | $IVZ | Invesco Ltd. | Financials | $347K | 0.2% | 1,670 | — | |||
| 77 | $RITM | Rithm Capital Corp. | Real Estate | $342K | 0.2% | 38K | -2% | |||
| 78 | $FNF | Fidelity National Financial, Inc. | Financials | $335K | 0.2% | 8,668 | — | |||
| 79 | $OSS | ONE STOP SYSTEMS, INC. | Technology | $333K | 0.2% | 38K | -2% | |||
| 80 | $IBM | INTERNATIONAL BUSINESS MACHINES CORP | Technology | $326K | 0.2% | 1,483 | +16% | |||
| 81 | $LINC | LINCOLN EDUCATIONAL SERVICES CORP | Consumer Discretionary | $309K | 0.2% | 14K | +11% | |||
| 82 | $CVX | CHEVRON CORP | Energy | $281K | 0.2% | 1,377 | — | |||
| 83 | $LMT | LOCKHEED MARTIN CORP | Industrials | $280K | 0.2% | 550 | New | |||
| 84 | — | STATE STREET SPDR PORTFOLIO S&P 500 ETF - ETF | — | $276K | 0.2% | 3,075 | — | |||
| 85 | $COP | CONOCOPHILLIPS | Energy | $253K | 0.1% | 2,025 | — | |||
| 86 | $MRK | Merck & Co., Inc. | Healthcare | $247K | 0.1% | 1,700 | — | |||
| 87 | $TER | TERADYNE, INC | Technology | $241K | 0.1% | 600 | — | |||
| 88 | $WLY | JOHN WILEY & SONS, INC. | Communication Services | $239K | 0.1% | 5,000 | — | |||
| 89 | — | JPMORGAN EQUITY PREMIUM INCOME ETF - ETF | — | $238K | 0.1% | 4,225 | — | |||
| 90 | $GBDC | GOLUB CAPITAL BDC, Inc. | Other | $226K | 0.1% | 18K | -0.7% | |||
| 91 | $JPM | JPMORGAN CHASE & CO | Financials | $218K | 0.1% | 660 | — | |||
| 92 | $UTG | REAVES UTILITY INCOME FUND | Other | $210K | 0.1% | 6,125 | — | |||
| 93 | $XOM.R34088 | EXXON MOBIL CORP | Energy | $208K | 0.1% | 1,280 | New | |||
| 94 | $NEM | NEWMONT Corp /DE/ | Materials | $205K | 0.1% | 1,780 | New | |||
| 95 | $AQST | Aquestive Therapeutics, Inc. | Healthcare | $191K | 0.1% | 41K | -5% | |||
| 96 | $BNED | Barnes & Noble Education, Inc. | Consumer Discretionary | $174K | 0.1% | 15K | — | |||
| 97 | $VKQ | Invesco Municipal Trust | Other | $170K | 0.1% | 20K | — | |||
| 98 | $NUV | NUVEEN MUNICIPAL VALUE FUND INC | Other | $166K | 0.1% | 20K | — | |||
| 99 | $DX | DYNEX CAPITAL INC | Real Estate | $112K | 0.1% | 10K | — | |||
| 100 | $XGN | EXAGEN INC. | Healthcare | $92K | 0.1% | 11K | New | |||
| 101 | $PROF | Profound Medical Corp. | Healthcare | $66K | 0.0% | 11K | -6% | |||
| 102 | $BAER | Bridger Aerospace Group Holdings, Inc. | Industrials | $58K | 0.0% | 82K | New |
What changed in Q3 2026
Against the previous quarter's 13F: 5 new, 12 added to, 34 trimmed, 4 sold out. Share-count changes; largest moves by dollar size first.
New positions (5)
$LMTLOCKHEED MARTIN CORP$280K
first bought this quarter
$XOM.R34088EXXON MOBIL CORP$208K
first bought this quarter
$NEMNEWMONT Corp /DE/$205K
first bought this quarter
$XGNEXAGEN INC.$92K
first bought this quarter
$BAERBridger Aerospace Group Holdings, Inc.$58K
first bought this quarter
Added to (12)
$SKYHSky Harbour Group Corp+910%
now $1.9M · held 2 qtrs, 2 adds in a row
now $3.2M · held 2 qtrs, 2 adds in a row
$CVECENOVUS ENERGY INC.+43%
now $1.3M · held 5+ qtrs
now $2.5M · held 5+ qtrs, 2 adds in a row
$TTITETRA TECHNOLOGIES INC+166%
now $409K · held 5+ qtrs
$PARPAR TECHNOLOGY CORP+18%
now $877K · held 5+ qtrs, 4 adds in a row
+6 more in the Excel export
Trimmed (34)
$CURICuriosityStream Inc.-49%
now $1.1M · held 5+ qtrs
now $17.9M · held 5+ qtrs
$IOVAIOVANCE BIOTHERAPEUTICS, INC.-33%
now $611K · held 4 qtrs
$PAYSPaysign, Inc.-31%
now $531K · held 4 qtrs
now $11.8M · held 5+ qtrs
now $2.7M · held 5+ qtrs
+28 more in the Excel export
Holdings by quarter
Every 13F Penbrook Management LLC has filed, 38 earlier quarters. Pick one to see what it held then.
Is it too late to follow Penbrook Management?
Q3 2026 13F filed with the SEC on Oct 16, 2026. Prices are closing prices as of Oct 26, 2026.
Average quality of Penbrook Management's top 20 holdings: 68/100 (our AI quality score, weighted by position size; 15 of the 20 are scored)
Top 10 since filing
-0.2%
Value-weighted move of the 10 largest stock positions
Turnover
3%
Last quarter; 18% over the last 4
Top 10 weight
50%
Share of the stock portfolio in its 10 largest positions
Held 4+ quarters
93%
Share of portfolio value in positions held a year or more
Highest-quality names it owns(among its 100 largest positions)
The 8 highest-scoring companies in this portfolio are a Pro feature.
How these are measured
- Moves since the quarter-end and since the filing date use our own daily closing prices, from the close on (or just before) each date to the latest close.
- Turnover is the lesser of shares bought or sold in a quarter, valued at the quarter-end prices in the 13F, divided by the average of the two quarters' stock portfolio values.
- Quarters held and add/trim streaks count back only through quarters whose filed holdings add up to the filing's own cover-page total (back to Q3 2025 for this fund). A change counts as an add or a trim when the split-adjusted share count moves by more than 1%.
- Estimate, not the fund's reported cost. For each quarter in the current holding period in which the fund's share count rose (split-adjusted), we take that quarter's average daily close and weight it by the shares added; sales do not change an average cost. Quarters where the stock's price history and the 13F's own implied price disagree by more than 2x are left out.
- Put and call option rows report the value of the underlying shares, not a position the fund paid for, so they are left out of all of the above.
Portfolio Overview
Penbrook Management LLC disclosed 102 positions worth $169.5M in its Form 13F-HR for Q3 2026, led by $TRGP (Targa Resources Corp.) at 10.6% of the equity portfolio, followed by $AMZN and $NVO. During the quarter the fund opened 5 new positions and exited 4 — including a new stake in $LMT and a full exit from $DV. The portfolio is most concentrated in Technology (37.4% of disclosed assets). All figures are sourced directly from Penbrook Management LLC’s Form 13F-HR filing with the SEC under CIK 1381055.
Funds like this
managers whose biggest positions overlap Penbrook Management'sBrowse Top Institutional Investors
13F Pro tracks 8,700+ institutional investors filing 13F reports with the SEC.
to search all 8,700+ institutional filers.
AI-Powered Hedge Fund Analysis: Penbrook Management LLC
13F Pro is an AI hedge fund tracker and stock research platform. For Penbrook Management LLC (SEC CIK: 1381055), the platform ingests every quarterly Form 13F filing and applies AI-powered analysis on top — 10 specialized AI analysts (value, growth, momentum, macro, activist, and more) debate the fund's top positions and publish AI-generated analysis with cited SEC sources.
Every holding in Penbrook Management LLC's portfolio is scored on an AI quality ranking built from its SEC filings (ROIC, FCF margin, revenue growth, institutional flow, earnings quality, shareholder dilution, and more). Track accumulation and distribution quarter over quarter, identify conviction positions, and see AI stock analysis for each position — alongside 8,700+ other institutional filers and 2,800+ AI-ranked companies.