Ticker: BIIB CUSIP: 09062X103 Class: COM
Note: Option positions (PUT/CALL) are excluded.
| Period | Shares | Value ($000) | Average Close | Price Range |
|---|---|---|---|---|
| Q4 2025 | 1,714 | $302 | $163.37 | $138.00 - $185.17 |
| Q3 2025 | 1,462 | $205 | $135.17 | $121.05 - $150.28 |
| Q1 2025 | 1,731 | $237 | $142.96 | $128.51 - $157.09 |
| Q4 2024 | 1,590 | $243 | $168.67 | $145.07 - $195.00 |
| Q2 2024 | 1,118 | $259 | $217.32 | $189.44 - $237.54 |
| Q4 2023 | 2,014 | $493 | $245.62 | $220.86 - $269.43 |
| Q3 2023 | 1,666 | $428 | $267.47 | $251.85 - $287.60 |
| Q2 2023 | 1,268 | $361 | $297.86 | $273.39 - $319.76 |
| Q1 2023 | 1,347 | $374 | $276.70 | $254.80 - $295.90 |
| Q4 2022 | 854 | $236 | $282.44 | $250.31 - $311.88 |
| Q3 2022 | 20,896 | $5,579 | $212.38 | $193.65 - $283.44 |
| Q3 2021 | 1,085 | $307 | $327.75 | $282.64 - $372.12 |
| Q2 2021 | 808 | $280 | $302.94 | $257.03 - $468.55 |
| Q1 2021 | 13,515 | $3,781 | $269.69 | $238.40 - $296.38 |
| Q4 2020 | 7,562 | $1,852 | $259.08 | $223.25 - $363.92 |
| Q3 2020 | 13,914 | $3,947 | $278.91 | $261.87 - $312.00 |
| Q2 2020 | 6,437 | $1,722 | $300.59 | $257.60 - $350.24 |
| Q1 2020 | 1,913 | $605 | $303.47 | $262.25 - $374.99 |
| Q4 2019 | 1,954 | $580 | $277.46 | $219.70 - $318.00 |
| Q3 2019 | 1,574 | $366 | $232.85 | $215.78 - $246.99 |
| Q2 2019 | 3,685 | $862 | $230.90 | $219.20 - $245.35 |
| Q1 2019 | 1,002 | $237 | $314.89 | $216.12 - $344.00 |