Penbrook Management LLC

Q3 2025 13F-HR Holdings

Location
New York, NY
Holdings as of
9/30/2025
Date filed
10/22/2025
Form type
13F-HR
Num holdings
104
Total value ($000)
$143,225
Net value change ($000)
+10,929 (8.3%)
New positions
14
Sold out positions
17
Turnover %
9.1%
Sector allocation + QoQ delta (equities-only)
Prev filing: 7/25/2025 Next filing: 1/6/2026 SEC filing

Snapshot: Change Analysis

Compared to Q2 2025
Methodology: sector metrics are equities-only; instrument mix chart is ex-options; options exposure is shown separately. Why this matters.
Top Adds (Value $000, Stocks/ETFs)
AEHR 3,198 1058.9%
MSFT 2,826 28.9%
PL 2,787 215.7%
GOOGL 2,050 57.2%
ALKT 1,997 183.7%
GOOGL 1,671 43.3%
AMZN 1,422 14.3%
CURI 1,418 329.8%
ELVA 1,391 328.1%
SA 1,174 101.4%
Top Reduces (Value $000, Stocks/ETFs)
NVO -4,333 -20.0%
Veren Inc. -2,918 -100.0%
COOP -1,893 -100.0%
TRGP -1,003 -40.2%
NVGS -696 -100.0%
NU -524 -100.0%
MP -482 -100.0%
AAPL -461 -51.2%
TRI -428 -10.0%
IBB -414 -100.0%
Instrument mix + QoQ Δ (ex-options)
How this table is calculated: SEC VALUE ($000) is used as reported. For derivatives (PUT/CALL/WARRANT/RIGHT), SEC value represents reported underlying exposure, not premium cash paid/received. Column % is bucket-based: non-options share is calculated inside non-option total, options share is calculated inside options total. Details.
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Instrument:
Issuer Name Ticker Sector Industry Class History Value ($000) % Shares Shares Δ Shares Δ% Value Δ ($000) Value Δ% Principal Option Type