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Livermore
Livermore
ZHEN

Penbrook Management LLC

SEC CIK
0001381055
Latest filing
Jul 23, 2026

MRK holding history

Merck & Co., 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.

MRK overviewAll 13F holders of MRKFull Q2 2026 holdings

Shares (Q2 2026)
1,700
Value
$218.4K
% of portfolio
0.1%
Quarters held
14
Since Q1 2022
Holdings of MRK by Penbrook Management LLC, by quarter
QuarterSharesValue% of portfolioShare changeActionAll holders
Q2 20261,700$218.4K0.1%00.0%UnchangedHolders
Q1 20261,700$204.5K0.2%+1,700NewHolders
Q1 20250$00.0%−2,706−100.0%Sold outHolders
Q4 20242,706$269.2K0.2%−1,500−35.7%ReducedHolders
Q3 20244,206$477.6K0.3%+100+2.4%AddedHolders
Q2 20244,106$508.3K0.3%00.0%UnchangedHolders
Q1 20244,106$541.8K0.3%+500+13.9%AddedHolders
Q4 20233,606$393.1K0.3%00.0%UnchangedHolders
Q3 20233,606$371.2K0.3%−600−14.3%ReducedHolders
Q2 20234,206$485.3K0.4%00.0%UnchangedHolders
Q1 20234,206$447.5K0.4%00.0%UnchangedHolders
Q4 20224,206$466.7K0.4%−500−10.6%ReducedHolders
Q3 20224,706$405.0K0.3%+406+9.4%AddedHolders
Q2 20224,300$392.0K0.3%00.0%UnchangedHolders
Q1 20224,300$353.0K0.2%+4,300NewHolders