Penbrook Management LLC
•CIK: 1381055•Filing: Q4 2025
**Penbrook Management LLC** is a quantitative investment manager overseeing $145M in assets. The firm maintains a diversified portfolio of 97 positions, exhibiting notable concentration in mega-cap technology names. Top holdings include NVO at $16.1M, AMZN at $11.9M, and MSFT at $11.0M, representing significant exposure to growth sectors. This positioning suggests a systematic approach targeting established market leaders.
Total AUM
$145.0M
QoQ Performance
+1.2%
Positions
97
Top 10 Concentration
52.4%
Latest Filing
Q4 2025
Top Holdings Allocation
NVO
AMZN
MSFT
GOOGL
NVO11.1%
AMZN8.2%
MSFT7.6%
GOOGL5.0%
GOOG4.9%
DUT4.8%
PL4.0%
PLAB2.4%
📈 Biggest Buys
📉 Biggest Sells
Sector Breakdown
Other66.2%
Technology20.5%
Consumer9.2%
Financial2.2%
Healthcare1.1%
ETF0.8%
🚪 Exited Positionssold since Q3 2025
—
IREN LIMITED ORDINARY SHARES
SOLD
$291.0K
+7 more exited positions
Changes from Q3 2025
NEW5 new positions
↑17 increased
↓52 decreased
Historical Filings
Q4 2025Q3 2025Q2 2025Q1 2025Q4 2024Q3 2024Q2 2024Q1 2024Q4 2023