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Livermore
Livermore
ZHEN

Penbrook Management LLC

SEC CIK
0001381055
Latest filing
Jul 23, 2026

POWI holding history

Power Integrations Inc in every 13F filed by Penbrook Management LLC, including the quarters it was sold out or no filing was made. Changes compare share counts with the previous calendar quarter.

POWI overviewAll 13F holders of POWIFull Q2 2026 holdings

Shares (Q2 2026)
9,200
Value
$770.6K
% of portfolio
0.5%
Quarters held
22
Since Q1 2021
Holdings of POWI by Penbrook Management LLC, by quarter
QuarterSharesValue% of portfolioShare changeActionAll holders
Q2 20269,200$770.6K0.5%00.0%UnchangedHolders
Q1 20269,200$471.0K0.4%00.0%UnchangedHolders
Q4 20259,200$327.0K0.2%00.0%UnchangedHolders
Q3 20259,200$369.9K0.3%00.0%UnchangedHolders
Q2 20259,200$514.3K0.4%00.0%UnchangedHolders
Q1 20259,200$464.6K0.4%00.0%UnchangedHolders
Q4 20249,200$567.6K0.4%00.0%UnchangedHolders
Q3 20249,200$589.9K0.4%00.0%UnchangedHolders
Q2 20249,200$645.7K0.4%00.0%UnchangedHolders
Q1 20249,200$658.3K0.4%00.0%UnchangedHolders
Q4 20239,200$755.4K0.5%−800−8.0%ReducedHolders
Q3 202310,000$763.1K0.6%00.0%UnchangedHolders
Q2 202310,000$946.7K0.7%00.0%UnchangedHolders
Q1 202310,000$846.4K0.7%00.0%UnchangedHolders
Q4 202210,000$717.2K0.6%−3,000−23.1%ReducedHolders
Q3 202213,000$836.0K0.7%00.0%UnchangedHolders
Q2 202213,000$975.0K0.8%−500−3.7%ReducedHolders
Q1 202213,500$1.25M0.8%00.0%UnchangedHolders
Q4 202113,500$1.25M0.8%−500−3.6%ReducedHolders
Q3 202114,000$1.39M0.9%00.0%UnchangedHolders
Q2 202114,000$1.15M0.7%00.0%UnchangedHolders
Q1 202114,000$1.14M0.8%––Holders

Livermore's 13F data starts with Q1 2021, so Q1 2021 has no change from the previous quarter.