Ticker: BIIB CUSIP: 09062X103 Class: COM
Note: Option positions (PUT/CALL) are excluded.
| Period | Shares | Value ($000) | Average Close | Price Range |
|---|---|---|---|---|
| Q4 2025 | 4,782 | $842 | $163.37 | $138.00 - $185.17 |
| Q3 2025 | 4,480 | $628 | $135.17 | $121.05 - $150.28 |
| Q2 2025 | 3,246 | $408 | $124.60 | $110.04 - $137.32 |
| Q1 2025 | 3,362 | $460 | $142.96 | $128.51 - $157.09 |
| Q4 2024 | 2,795 | $427 | $168.67 | $145.07 - $195.00 |
| Q3 2024 | 2,397 | $459 | $209.21 | $188.78 - $238.00 |
| Q2 2024 | 2,697 | $625 | $217.32 | $189.44 - $237.54 |
| Q1 2024 | 2,262 | $488 | $234.20 | $211.02 - $268.30 |
| Q4 2023 | 2,282 | $591 | $245.62 | $220.86 - $269.43 |
| Q3 2023 | 1,949 | $501 | $267.47 | $251.85 - $287.60 |
| Q2 2023 | 2,190 | $624 | $297.86 | $273.39 - $319.76 |
| Q1 2023 | 2,150 | $598 | $276.70 | $254.80 - $295.90 |
| Q4 2022 | 2,170 | $601 | $282.44 | $250.31 - $311.88 |
| Q2 2022 | 2,002 | $408 | $204.43 | $187.16 - $225.50 |
| Q1 2022 | 1,203 | $253 | $217.46 | $192.67 - $249.00 |
| Q4 2021 | 1,472 | $353 | $257.12 | $221.72 - $290.76 |
| Q3 2021 | 1,094 | $310 | $327.75 | $282.64 - $372.12 |
| Q2 2021 | 1,170 | $405 | $302.94 | $257.03 - $468.55 |
| Q1 2021 | 885 | $248 | $269.69 | $238.40 - $296.38 |
| Q4 2020 | 1,084 | $265 | $259.08 | $223.25 - $363.92 |
| Q2 2020 | 772 | $207 | $300.59 | $257.60 - $350.24 |
| Q1 2020 | 816 | $258 | $303.47 | $262.25 - $374.99 |
| Q4 2019 | 993 | $294 | $277.46 | $219.70 - $318.00 |
| Q3 2019 | 894 | $208 | $232.85 | $215.78 - $246.99 |
| Q3 2018 | 742 | $262 | $344.30 | $288.13 - $388.67 |
| Q4 2017 | 987 | $314 | $320.80 | $301.81 - $348.84 |
| Q3 2017 | 762 | $239 | $296.11 | $269.50 - $330.00 |