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Livermore
Livermore
ZHEN

Private Trust Co NA

SEC CIK
0001277557
Latest filing
Jul 28, 2026

BIIB holding history

Biogen Inc. in every 13F filed by Private Trust Co NA, including the quarters it was sold out or no filing was made. Changes compare share counts with the previous calendar quarter.

BIIB overviewAll 13F holders of BIIBFull Q2 2026 holdings

Shares (Q2 2026)
209
Value
$45.2K
% of portfolio
<0.1%
Quarters held
21
Since Q1 2021
Holdings of BIIB by Private Trust Co NA, by quarter
QuarterSharesValue% of portfolioShare changeActionAll holders
Q2 2026209$45.2K<0.1%+9+4.5%AddedHolders
Q1 2026200$36.7K<0.1%+25+14.3%AddedHolders
Q4 2025175$30.8K<0.1%+20+12.9%AddedHolders
Q3 2025155$21.7K<0.1%−11−6.6%ReducedHolders
Q2 2025166$20.8K<0.1%−63−27.5%ReducedHolders
Q1 2025229$31.3K<0.1%+98+74.8%AddedHolders
Q4 2024131$20.0K<0.1%−120−47.8%ReducedHolders
Q3 2024251$48.7K<0.1%−226−47.4%ReducedHolders
Q2 2024477$110.6K<0.1%−481−50.2%ReducedHolders
Q1 2024958$206.6K<0.1%+399+71.4%AddedHolders
Q4 2023559$144.7K<0.1%−35−5.9%ReducedHolders
Q3 2023594$152.7K<0.1%+35+6.3%AddedHolders
Q2 2023559$159.2K<0.1%+36+6.9%AddedHolders
Q1 2023523$145.4K<0.1%+62+13.4%AddedHolders
Q4 2022461$128.0K<0.1%−15−3.2%ReducedHolders
Q3 2022476$127.0K<0.1%−7−1.4%ReducedHolders
Q2 2022483$99.0K<0.1%+483NewHolders
Q1 20220$00.0%−1,232−100.0%Sold outHolders
Q4 20211,232$296.0K<0.1%−91−6.9%ReducedHolders
Q3 20211,323$374.0K0.1%−35−2.6%ReducedHolders
Q2 20211,358$470.0K0.1%−302−18.2%ReducedHolders
Q1 20211,660$464.0K0.1%––Holders

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