Biogen Inc.

Historical 13F Holders

Symbol
BIIB
CUSIP
09062X103
All holders as of
Q3 2025
Type
Equity
Class
COM
Reported Value, Excluding Options
Total Filings
Period Filings Shares, Excl. Options Value, Excl. Options
2025 Q3 954 132 M $18.5 B
2025 Q2 914 131 M $16.5 B
2025 Q1 930 127 M $17.4 B
2024 Q4 936 132 M $20.1 B
2024 Q3 985 135 M $26.0 B
2024 Q2 1,004 135 M $31.2 B
2024 Q1 1,022 137 M $29.5 B
2023 Q4 1,067 136 M $35.3 B
2023 Q3 1,029 125 M $32.1 B
2023 Q2 1,062 127 M $36.0 B
2023 Q1 1,069 128 M $35.0 B
2022 Q4 1,104 132 M $36.7 B
2022 Q3 1,075 124 M $33.3 B
2022 Q2 1,004 122 M $25.2 B
2022 Q1 1,028 123 M $26.1 B
2021 Q4 1,102 125 M $30.2 B
2021 Q3 1,116 123 M $35.2 B
2021 Q2 1,195 126 M $43.7 B
2021 Q1 1,174 130 M $35.7 B
2020 Q4 1,157 131 M $32.3 B
2020 Q3 1,136 132 M $37.5 B
2020 Q2 1,134 136 M $36.4 B
2020 Q1 1,187 146 M $46.1 B
2019 Q4 1,190 157 M $46.5 B
2019 Q3 1,067 161 M $37.6 B
2019 Q2 1,104 164 M $38.4 B
2019 Q1 1,176 172 M $40.7 B
2018 Q4 1,218 180 M $54.1 B
2018 Q3 1,233 184 M $64.9 B
2018 Q2 1,178 182 M $52.8 B
2018 Q1 1,184 192 M $52.5 B
2017 Q4 1,203 190 M $60.6 B
2017 Q3 1,095 189 M $59.1 B
2017 Q2 1,066 187 M $50.9 B
2017 Q1 1,089 190 M $51.9 B
2016 Q4 1,121 191 M $54.1 B
2016 Q3 1,107 192 M $60.1 B
2016 Q2 1,044 192 M $46.7 B
2016 Q1 1,023 205 M $49.9 B
2015 Q4 1,048 196 M $60.3 B
2015 Q3 988 202 M $59.1 B
2015 Q2 1,036 212 M $85.5 B
2015 Q1 1,033 214 M $90.3 B
2014 Q4 957 215 M $73.3 B
2014 Q3 881 215 M $71.1 B
2014 Q2 849 220 M $69.5 B
2014 Q1 840 216 M $66.0 B