Ticker: BIIB CUSIP: 09062X103 Class: COM
Note: Option positions (PUT/CALL) are excluded.
| Period | Shares | Value ($000) | Average Close | Price Range |
|---|---|---|---|---|
| Q4 2025 | 2,541 | $447 | $163.37 | $138.00 - $185.17 |
| Q3 2025 | 2,388 | $335 | $135.17 | $121.05 - $150.28 |
| Q2 2025 | 7,497 | $942 | $124.60 | $110.04 - $137.32 |
| Q1 2025 | 6,809 | $932 | $142.96 | $128.51 - $157.09 |
| Q4 2024 | 4,133 | $632 | $168.67 | $145.07 - $195.00 |
| Q3 2024 | 5,861 | $1,118 | $209.21 | $188.78 - $238.00 |
| Q2 2024 | 5,657 | $1,311 | $217.32 | $189.44 - $237.54 |
| Q1 2024 | 4,289 | $925 | $234.20 | $211.02 - $268.30 |
| Q4 2023 | 3,969 | $1,027 | $245.62 | $220.86 - $269.43 |
| Q3 2023 | 3,992 | $1,026 | $267.47 | $251.85 - $287.60 |
| Q2 2023 | 3,654 | $1,041 | $297.86 | $273.39 - $319.76 |
| Q4 2022 | 3,607 | $999 | $282.44 | $250.31 - $311.88 |
| Q3 2022 | 3,767 | $1,006 | $212.38 | $193.65 - $283.44 |
| Q2 2022 | 3,792 | $806 | $204.43 | $187.16 - $225.50 |
| Q1 2022 | 3,932 | $828 | $217.46 | $192.67 - $249.00 |
| Q4 2021 | 3,809 | $914 | $257.12 | $221.72 - $290.76 |
| Q3 2021 | 3,874 | $1,096 | $327.75 | $282.64 - $372.12 |
| Q2 2021 | 4,129 | $1,430 | $302.94 | $257.03 - $468.55 |
| Q1 2021 | 3,237 | $906 | $269.69 | $238.40 - $296.38 |
| Q4 2020 | 3,642 | $892 | $259.08 | $223.25 - $363.92 |
| Q3 2020 | 3,370 | $962 | $278.91 | $261.87 - $312.00 |
| Q2 2020 | 3,132 | $838 | $300.59 | $257.60 - $350.24 |
| Q1 2020 | 3,012 | $953 | $303.47 | $262.25 - $374.99 |
| Q4 2019 | 3,198 | $949 | $277.46 | $219.70 - $318.00 |
| Q3 2019 | 3,278 | $763 | $232.85 | $215.78 - $246.99 |
| Q2 2019 | 3,305 | $773 | $230.90 | $219.20 - $245.35 |
| Q1 2019 | 3,119 | $737 | $314.89 | $216.12 - $344.00 |
| Q4 2018 | 2,514 | $757 | $319.14 | $278.46 - $358.41 |
| Q3 2018 | 2,610 | $922 | $344.30 | $288.13 - $388.67 |
| Q2 2018 | 2,214 | $643 | $281.15 | $249.17 - $310.91 |
| Q1 2018 | 1,974 | $541 | $310.41 | $259.76 - $370.57 |