Ticker: BIIB CUSIP: 09062X103 Class: COM
Note: Option positions (PUT/CALL) are excluded.
| Period | Shares | Value ($000) | Average Close | Price Range |
|---|---|---|---|---|
| Q4 2025 | 15,551 | $2,737 | $163.37 | $138.00 - $185.17 |
| Q3 2025 | 11,324 | $1,586 | $135.17 | $121.05 - $150.28 |
| Q2 2025 | 8,684 | $1,091 | $124.60 | $110.04 - $137.32 |
| Q1 2025 | 3,785 | $518 | $142.96 | $128.51 - $157.09 |
| Q4 2024 | 1,836 | $281 | $168.67 | $145.07 - $195.00 |
| Q3 2024 | 3,152 | $611 | $209.21 | $188.78 - $238.00 |
| Q2 2024 | 3,523 | $817 | $217.32 | $189.44 - $237.54 |
| Q1 2024 | 5,661 | $1,221 | $234.20 | $211.02 - $268.30 |
| Q4 2023 | 5,932 | $1,535 | $245.62 | $220.86 - $269.43 |
| Q3 2023 | 5,600 | $1,439 | $267.47 | $251.85 - $287.60 |
| Q2 2023 | 10,541 | $3,003 | $297.86 | $273.39 - $319.76 |
| Q1 2023 | 10,336 | $2,874 | $276.70 | $254.80 - $295.90 |
| Q4 2022 | 6,511 | $1,803 | $282.44 | $250.31 - $311.88 |
| Q3 2022 | 6,378 | $1,703 | $212.38 | $193.65 - $283.44 |
| Q2 2022 | 4,509 | $920 | $204.43 | $187.16 - $225.50 |
| Q1 2022 | 10,035 | $2,113 | $217.46 | $192.67 - $249.00 |
| Q4 2021 | 2,527 | $606 | $257.12 | $221.72 - $290.76 |
| Q3 2021 | 10,604 | $3,001 | $327.75 | $282.64 - $372.12 |
| Q2 2021 | 10,773 | $3,730 | $302.94 | $257.03 - $468.55 |
| Q1 2021 | 9,201 | $2,574 | $269.69 | $238.40 - $296.38 |
| Q4 2020 | 6,329 | $1,549 | $259.08 | $223.25 - $363.92 |
| Q3 2020 | 5,779 | $1,639 | $278.91 | $261.87 - $312.00 |
| Q2 2020 | 7,933 | $2,122 | $300.59 | $257.60 - $350.24 |
| Q1 2020 | 9,907 | $3,134 | $303.47 | $262.25 - $374.99 |
| Q4 2019 | 8,642 | $2,564 | $277.46 | $219.70 - $318.00 |
| Q3 2019 | 4,656 | $1,084 | $232.85 | $215.78 - $246.99 |
| Q2 2019 | 4,455 | $1,042 | $230.90 | $219.20 - $245.35 |
| Q1 2019 | 1,797 | $425 | $314.89 | $216.12 - $344.00 |
| Q4 2018 | 8,998 | $2,708 | $319.14 | $278.46 - $358.41 |