Palo Alto Investors LP’s Biogen Inc Position
Does Palo Alto Investors LP own Biogen Inc (BIIB)? Yes — 140.7K shares worth $26M (+3.95% of its 13F portfolio) as of Q1 2026, down from 183.6K shares the prior filed quarter.
Position Value
$26M
Q1 2026
Shares
140.7K
% of Portfolio
+3.95%
Quarters Held
22
currently held
Position History BIIB
Reported value by quarter
| Quarter | Shares | Value | % of Portfolio |
|---|---|---|---|
| Q1 2026 | 140.7K | $26M | +3.95% |
| Q4 2025 | 183.6K | $32M | +4.50% |
| Q3 2025 | 185.7K | $26M | +4.81% |
| Q2 2025 | 205.8K | $26M | +5.50% |
| Q1 2025 | 204.9K | $28M | +5.34% |
| Q4 2024 | 190.1K | $29M | +4.51% |
| Q3 2024 | 228.9K | $44M | +5.76% |
| Q2 2024 | 289.1K | $67M | +7.76% |
| Q1 2024 | 290.0K | $63M | +7.05% |
| Q4 2023 | 380.4K | $98M | +8.87% |
| Q3 2023 | 381.3K | $98M | +9.27% |
| Q2 2023 | 381.3K | $109M | +8.77% |
| Q1 2023 | 381.3K | $106M | +8.78% |
| Q4 2022 | 380.1K | $105M | +8.97% |
| Q3 2022 | 361.0K | $96M | +7.62% |
| Q2 2022 | 361.0K | $74M | +6.42% |
| Q1 2022 | 361.0K | $76M | +5.88% |
| Q4 2021 | 385.0K | $92M | +5.90% |
| Q3 2021 | 361.6K | $102M | +6.18% |
| Q2 2021 | 361.6K | $125M | +6.90% |
| Q1 2021 | 343.2K | $96M | +5.47% |
| Q4 2020 | 234.3K | $57M | +3.01% |
Common-stock position only; options are excluded. Quarters where the fund filed no 13F or reported no position are absent. See Palo Alto Investors LP’s full portfolio or all institutional holders of BIIB.