Ticker: BIIB CUSIP: 09062X103 Class: COM
Note: Option positions (PUT/CALL) are excluded.
| Period | Shares | Value ($000) | Average Close | Price Range |
|---|---|---|---|---|
| Q4 2025 | 3,030 | $1 | $163.37 | $138.00 - $185.17 |
| Q3 2025 | 3,447 | $0 | $135.17 | $121.05 - $150.28 |
| Q2 2025 | 3,203 | $0 | $124.60 | $110.04 - $137.32 |
| Q1 2025 | 3,066 | $0 | $142.96 | $128.51 - $157.09 |
| Q4 2024 | 2,307 | $0 | $168.67 | $145.07 - $195.00 |
| Q3 2024 | 2,630 | $1 | $209.21 | $188.78 - $238.00 |
| Q2 2024 | 2,529 | $1 | $217.32 | $189.44 - $237.54 |
| Q1 2024 | 2,336 | $1 | $234.20 | $211.02 - $268.30 |
| Q4 2023 | 2,551 | $1 | $245.62 | $220.86 - $269.43 |
| Q3 2023 | 2,832 | $1 | $267.47 | $251.85 - $287.60 |
| Q4 2022 | 1,698 | $470 | $282.44 | $250.31 - $311.88 |
| Q3 2022 | 1,472 | $393,000 | $212.38 | $193.65 - $283.44 |
| Q2 2022 | 1,306 | $266 | $204.43 | $187.16 - $225.50 |
| Q1 2022 | 1,059 | $223 | $217.46 | $192.67 - $249.00 |
| Q4 2021 | 850 | $204,000 | $257.12 | $221.72 - $290.76 |
| Q3 2021 | 1,286 | $364 | $327.75 | $282.64 - $372.12 |
| Q2 2021 | 1,231 | $426 | $302.94 | $257.03 - $468.55 |
| Q1 2021 | 1,498 | $419 | $269.69 | $238.40 - $296.38 |
| Q4 2020 | 1,218 | $298 | $259.08 | $223.25 - $363.92 |
| Q3 2020 | 1,964 | $557 | $278.91 | $261.87 - $312.00 |
| Q2 2020 | 1,879 | $503 | $300.59 | $257.60 - $350.24 |
| Q1 2020 | 1,556 | $492 | $303.47 | $262.25 - $374.99 |
| Q4 2019 | 1,041 | $309 | $277.46 | $219.70 - $318.00 |
| Q3 2019 | 942 | $219 | $232.85 | $215.78 - $246.99 |
| Q2 2019 | 903 | $211 | $230.90 | $219.20 - $245.35 |
| Q1 2019 | 982 | $228 | $314.89 | $216.12 - $344.00 |
| Q4 2018 | 1,014 | $338 | $319.14 | $278.46 - $358.41 |
| Q3 2018 | 626 | $221 | $344.30 | $288.13 - $388.67 |