Ticker: BIIB CUSIP: 09062X103 Class: COM
Note: Option positions (PUT/CALL) are excluded.
| Period | Shares | Value ($000) | Average Close | Price Range |
|---|---|---|---|---|
| Q4 2025 | 57,961 | $10,201 | $163.37 | $138.00 - $185.17 |
| Q3 2025 | 9,043 | $1,267 | $135.17 | $121.05 - $150.28 |
| Q2 2025 | 8,343 | $1,048 | $124.60 | $110.04 - $137.32 |
| Q1 2025 | 7,054 | $965 | $142.96 | $128.51 - $157.09 |
| Q4 2024 | 4,277 | $654 | $168.67 | $145.07 - $195.00 |
| Q3 2024 | 18,908 | $3,665 | $209.21 | $188.78 - $238.00 |
| Q2 2024 | 3,402 | $789 | $217.32 | $189.44 - $237.54 |
| Q1 2024 | 10,394 | $2,241 | $234.20 | $211.02 - $268.30 |
| Q4 2023 | 2,507 | $649 | $245.62 | $220.86 - $269.43 |
| Q3 2023 | 1,922 | $494 | $267.47 | $251.85 - $287.60 |
| Q2 2023 | 1,510 | $430 | $297.86 | $273.39 - $319.76 |
| Q1 2023 | 1,088 | $302 | $276.70 | $254.80 - $295.90 |
| Q1 2021 | 11,138 | $2,727 | $269.69 | $238.40 - $296.38 |
| Q4 2020 | 11,138 | $2,727 | $259.08 | $223.25 - $363.92 |
| Q3 2020 | 10,441 | $2,962 | $278.91 | $261.87 - $312.00 |
| Q2 2020 | 9,063 | $2,425 | $300.59 | $257.60 - $350.24 |
| Q1 2020 | 6,472 | $2,048 | $303.47 | $262.25 - $374.99 |
| Q4 2019 | 8,606 | $2,554 | $277.46 | $219.70 - $318.00 |
| Q3 2019 | 9,781 | $2,277 | $232.85 | $215.78 - $246.99 |
| Q2 2019 | 9,511 | $2,224 | $230.90 | $219.20 - $245.35 |
| Q2 2018 | 10,225 | $2,952 | $281.15 | $249.17 - $310.91 |
| Q1 2018 | 11,278 | $3,066 | $310.41 | $259.76 - $370.57 |