Penbrook Management LLC

Q1 2026 13F-HR Holdings

Location
New York, NY
Holdings as of
3/31/2026
Date filed
4/21/2026
Form type
13F-HR
Num holdings
93
Total value ($000)
$132,058
Net value change ($000)
-12,921 (-8.9%)
New positions
8
Sold out positions
12
Turnover %
7.1%
Sector allocation + QoQ delta (equities-only)
Prev filing: 1/6/2026 Next filing: — SEC filing

Snapshot: Change Analysis

Compared to Q4 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)
PRTA 2,641 NEW
EXTR 1,260 NEW
VET 1,070 64.9%
CYRX 1,031 203.4%
MGNI 828 164.0%
CURI 678 51.4%
AEHR 628 27.1%
VMD 491 24.3%
TRGP 431 33.2%
PLAB 367 10.4%
Top Reduces (Value $000, Stocks/ETFs)
NVO -4,478 -27.8%
PL -2,863 -49.2%
MSFT -2,768 -25.2%
SYF -1,293 -100.0%
AMZN -1,167 -9.8%
TRI -1,068 -32.4%
MCO -1,015 -14.6%
ALKT -945 -32.1%
COHU -891 -100.0%
BPOP -738 -50.0%
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