Ticker: BIIB CUSIP: 09062X103 Class: COM
Note: Option positions (PUT/CALL) are excluded.
| Period | Shares | Value ($000) | Average Close | Price Range |
|---|---|---|---|---|
| Q4 2025 | 2,275 | $400 | $163.37 | $138.00 - $185.17 |
| Q3 2025 | 22,161 | $3,104 | $135.17 | $121.05 - $150.28 |
| Q2 2025 | 6,852 | $861 | $124.60 | $110.04 - $137.32 |
| Q1 2025 | 4,846 | $663 | $142.96 | $128.51 - $157.09 |
| Q3 2024 | 1,411 | $274 | $209.21 | $188.78 - $238.00 |
| Q2 2024 | 1,276 | $296 | $217.32 | $189.44 - $237.54 |
| Q1 2024 | 1,464 | $316 | $234.20 | $211.02 - $268.30 |
| Q4 2023 | 1,563 | $404 | $245.62 | $220.86 - $269.43 |
| Q3 2023 | 1,704 | $438 | $267.47 | $251.85 - $287.60 |
| Q2 2023 | 1,624 | $463 | $297.86 | $273.39 - $319.76 |
| Q1 2023 | 3,972 | $1,104 | $276.70 | $254.80 - $295.90 |
| Q4 2022 | 4,172 | $1,155 | $282.44 | $250.31 - $311.88 |
| Q3 2022 | 720 | $192 | $212.38 | $193.65 - $283.44 |
| Q2 2022 | 6,300 | $1,285 | $204.43 | $187.16 - $225.50 |
| Q1 2022 | 2,197 | $463 | $217.46 | $192.67 - $249.00 |
| Q4 2021 | 1,545 | $371 | $257.12 | $221.72 - $290.76 |
| Q3 2021 | 1,663 | $471 | $327.75 | $282.64 - $372.12 |
| Q2 2021 | 1,049 | $340 | $302.94 | $257.03 - $468.55 |
| Q4 2020 | 2,040 | $537 | $259.08 | $223.25 - $363.92 |