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Livermore
Livermore
ZHEN

Natixis

SEC CIK
0001274981
Latest filing
Aug 13, 2026

BIIB holding history

Biogen Inc. in every 13F filed by Natixis, 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)
11,907
Value
$2.57M
% of portfolio
<0.1%
Quarters held
22
Since Q1 2021
Holdings of BIIB by Natixis, by quarter
QuarterSharesValue% of portfolioShare changeActionAll holders
Q2 202611,907$2.57M<0.1%−10,678−47.3%ReducedHolders
Q1 202622,585$4.14M<0.1%−6,519−22.4%ReducedHolders
Q4 202529,104$5.12M<0.1%+5,068+21.1%AddedHolders
Q3 202524,036$3.37M<0.1%−10,745−30.9%ReducedHolders
Q2 202534,781$4.37M<0.1%+4,876+16.3%AddedHolders
Q1 202529,905$4.08M<0.1%+1,513+5.3%AddedHolders
Q4 202428,392$4.34M<0.1%−88,057−75.6%ReducedHolders
Q3 2024116,449$22.6M0.1%+8,968+8.3%AddedHolders
Q2 2024107,481$24.9M0.2%+5,743+5.6%AddedHolders
Q1 2024101,738$21.9M0.1%+34,665+51.7%AddedHolders
Q4 202367,073$17.4M0.1%+45,538+211.5%AddedHolders
Q3 202321,535$5.53M<0.1%−10,402−32.6%ReducedHolders
Q2 202331,937$9.10M0.1%+15,668+96.3%AddedHolders
Q1 202316,269$4.52M<0.1%−128,995−88.8%ReducedHolders
Q4 2022145,264$40.2M0.2%+53,173+57.7%AddedHolders
Q3 202292,091$24.6M0.1%−44,500−32.6%ReducedHolders
Q2 2022136,591$28.0M0.1%+43,324+46.5%AddedHolders
Q1 202293,267$19.6M0.1%−122,407−56.8%ReducedHolders
Q4 2021215,674$51.7M0.2%+127,089+143.5%AddedHolders
Q3 202188,585$25.1M0.1%−18,719−17.4%ReducedHolders
Q2 2021107,304$37.2M0.2%+63,990+147.7%AddedHolders
Q1 202143,314$12.1M<0.1%––Holders

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