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First Manhattan Co

SEC CIK
0000728083
Latest filing
Aug 14, 2026

BIIB holding history

Biogen Inc. in every 13F filed by First Manhattan Co, 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 2024)
0
Sold out in Q2 2024
Value
$0
% of portfolio
0.0%
Quarters held
13
Since Q1 2021
Holdings of BIIB by First Manhattan Co, by quarter
QuarterSharesValue% of portfolioShare changeActionAll holders
Q2 20240$00.0%−90−100.0%Sold outHolders
Q1 202490$19.4K<0.1%00.0%UnchangedHolders
Q4 202390$23.3K<0.1%−70−43.8%ReducedHolders
Q3 2023160$41.1K<0.1%−1−0.6%ReducedHolders
Q2 2023161$45.9K<0.1%00.0%UnchangedHolders
Q1 2023161$44.8K<0.1%+1+0.6%AddedHolders
Q4 2022160$44.3K<0.1%+40+33.3%AddedHolders
Q3 2022120$32.0K<0.1%00.0%UnchangedHolders
Q2 2022120$24.0K<0.1%00.0%UnchangedHolders
Q1 2022120$25.0K<0.1%00.0%UnchangedHolders
Q4 2021120$28.0K<0.1%00.0%UnchangedHolders
Q3 2021120$33.0K<0.1%−940−88.7%ReducedHolders
Q2 20211,060$367.0K<0.1%+940+783.3%AddedHolders
Q1 2021120$33.0K<0.1%––Holders

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