SEC 13F Intelligence

Letko, Brosseau & Associates Inc / BIIB

Letko, Brosseau & Associates Inc’s Biogen Inc Position

Does Letko, Brosseau & Associates Inc own Biogen Inc (BIIB)? Yes — 150.9K shares worth $28M (+0.45% of its 13F portfolio) as of Q1 2026, up from 129.8K shares the prior filed quarter.

Position Value
$28M
Q1 2026
Shares
150.9K
% of Portfolio
+0.45%
Quarters Held
30
currently held

Position History BIIB

Reported value by quarter
Q4 ’18: $58MQ4 ’18Q1 ’19: $44MQ2 ’19: $42MQ3 ’19: $39MQ4 ’19: $48MQ4 ’19Q1 ’20: $52MQ2 ’20: $42MQ3 ’20: $40MQ4 ’20: $32MQ4 ’20Q1 ’21: $35MQ2 ’21: $43MQ3 ’21: $34MQ4 ’21: $30MQ4 ’21Q1 ’22: $26MQ2 ’22: $25MQ3 ’22: $32MQ4 ’22: $32MQ4 ’22Q1 ’23: $32MQ2 ’23: $31MQ3 ’23: $28MQ4 ’23: $27MQ4 ’23Q1 ’24: $23MQ2 ’24: $26MQ3 ’24: $26MQ4 ’24: $18MQ4 ’24Q1 ’25: $16MQ2 ’25: $15MQ3 ’25: $17MQ4 ’25: $23MQ4 ’25Q1 ’26: $28Mfilingsflow.com
QuarterSharesValue% of Portfolio
Q1 2026150.9K$28M+0.45%
Q4 2025129.8K$23M+0.37%
Q3 2025120.6K$17M+0.29%
Q2 2025117.7K$15M+0.28%
Q1 2025115.6K$16M+0.34%
Q4 2024119.6K$18M+0.35%
Q3 2024132.9K$26M+0.47%
Q2 2024112.7K$26M+0.50%
Q1 2024105.3K$23M+0.39%
Q4 2023104.4K$27M+0.49%
Q3 2023108.2K$28M+0.54%
Q2 2023109.2K$31M+0.58%
Q1 2023115.7K$32M+0.60%
Q4 2022116.1K$32M+0.58%
Q3 2022119.3K$32M+0.63%
Q2 2022122.3K$25M+0.44%
Q1 2022122.1K$26M+0.38%
Q4 2021123.4K$30M+0.42%
Q3 2021120.0K$34M+0.49%
Q2 2021124.6K$43M+0.58%
Q1 2021126.6K$35M+0.48%
Q4 2020130.9K$32M+0.44%
Q3 2020141.6K$40M+0.62%
Q2 2020156.6K$42M+0.62%
Q1 2020164.0K$52M+0.89%
Q4 2019161.8K$48M+0.48%
Q3 2019168.6K$39M+0.40%
Q2 2019179.1K$42M+0.42%
Q1 2019185.9K$44M+0.44%
Q4 2018191.3K$58M+0.64%

Common-stock position only; options are excluded. Quarters where the fund filed no 13F or reported no position are absent. See Letko, Brosseau & Associates Inc’s full portfolio or all institutional holders of BIIB.