SEC 13F Intelligence

New York State Teachers Retirement System / BIIB

New York State Teachers Retirement System’s Biogen Inc Position

Does New York State Teachers Retirement System own Biogen Inc (BIIB)? Yes — 111.3K shares worth $20M (+0.04% of its 13F portfolio) as of Q1 2026, up from 111.2K shares the prior filed quarter.

Position Value
$20M
Q1 2026
Shares
111.3K
% of Portfolio
+0.04%
Quarters Held
30
currently held

Position History BIIB

Reported value by quarter
Q4 ’18: $99MQ4 ’18Q1 ’19: $78MQ2 ’19: $73MQ3 ’19: $73MQ4 ’19: $90MQ4 ’19Q1 ’20: $93MQ2 ’20: $72MQ3 ’20: $71MQ4 ’20: $57MQ4 ’20Q1 ’21: $56MQ2 ’21: $66MQ3 ’21: $52MQ4 ’21: $42MQ4 ’21Q1 ’22: $35MQ2 ’22: $33MQ3 ’22: $43MQ4 ’22: $45MQ4 ’22Q1 ’23: $45MQ2 ’23: $44MQ3 ’23: $37MQ4 ’23: $35MQ4 ’23Q1 ’24: $27MQ2 ’24: $29MQ3 ’24: $23MQ4 ’24: $17MQ4 ’24Q1 ’25: $15MQ2 ’25: $14MQ3 ’25: $15MQ4 ’25: $20MQ4 ’25Q1 ’26: $20Mfilingsflow.com
QuarterSharesValue% of Portfolio
Q1 2026111.3K$20M+0.04%
Q4 2025111.2K$20M+0.04%
Q3 2025110.2K$15M+0.03%
Q2 2025110.6K$14M+0.03%
Q1 2025107.7K$15M+0.03%
Q4 2024111.1K$17M+0.04%
Q3 2024117.8K$23M+0.05%
Q2 2024123.3K$29M+0.06%
Q1 2024126.8K$27M+0.06%
Q4 2023135.4K$35M+0.08%
Q3 2023143.1K$37M+0.09%
Q2 2023154.2K$44M+0.10%
Q1 2023162.1K$45M+0.11%
Q4 2022163.7K$45M+0.11%
Q3 2022162.9K$43M+0.11%
Q2 2022160.8K$33M+0.08%
Q1 2022164.8K$35M+0.07%
Q4 2021176.1K$42M+0.08%
Q3 2021183.1K$52M+0.11%
Q2 2021189.4K$66M+0.14%
Q1 2021201.0K$56M+0.12%
Q4 2020231.1K$57M+0.12%
Q3 2020248.8K$71M+0.17%
Q2 2020268.6K$72M+0.18%
Q1 2020292.9K$93M+0.28%
Q4 2019304.9K$90M+0.21%
Q3 2019311.8K$73M+0.18%
Q2 2019312.7K$73M+0.19%
Q1 2019330.7K$78M+0.20%
Q4 2018329.5K$99M+0.28%

Common-stock position only; options are excluded. Quarters where the fund filed no 13F or reported no position are absent. See New York State Teachers Retirement System’s full portfolio or all institutional holders of BIIB.