Ticker: BIIB CUSIP: 09062X103 Class: COM
Note: Option positions (PUT/CALL) are excluded.
| Period | Shares | Value ($000) | Average Close | Price Range |
|---|---|---|---|---|
| Q4 2025 | 17,382 | $3,059 | $163.37 | $138.00 - $185.17 |
| Q3 2025 | 61,049 | $8,552 | $135.17 | $121.05 - $150.28 |
| Q2 2025 | 61,266 | $7,694 | $124.60 | $110.04 - $137.32 |
| Q1 2025 | 2,158 | $295 | $142.96 | $128.51 - $157.09 |
| Q4 2024 | 2,041 | $312 | $168.67 | $145.07 - $195.00 |
| Q3 2024 | 2,438 | $473 | $209.21 | $188.78 - $238.00 |
| Q2 2024 | 2,698 | $625 | $217.32 | $189.44 - $237.54 |
| Q1 2024 | 2,690 | $580 | $234.20 | $211.02 - $268.30 |
| Q4 2023 | 2,551 | $660 | $245.62 | $220.86 - $269.43 |
| Q3 2023 | 2,499 | $642 | $267.47 | $251.85 - $287.60 |
| Q2 2023 | 2,525 | $719 | $297.86 | $273.39 - $319.76 |
| Q1 2023 | 2,507 | $697 | $276.70 | $254.80 - $295.90 |
| Q4 2022 | 3,434 | $1 | $282.44 | $250.31 - $311.88 |
| Q3 2022 | 6,805 | $1,817 | $212.38 | $193.65 - $283.44 |
| Q2 2022 | 1,724 | $352 | $204.43 | $187.16 - $225.50 |
| Q1 2022 | 9,694 | $2,042 | $217.46 | $192.67 - $249.00 |
| Q4 2021 | 8,094 | $1,942 | $257.12 | $221.72 - $290.76 |
| Q3 2021 | 8,342 | $2,361 | $327.75 | $282.64 - $372.12 |
| Q2 2021 | 7,853 | $2,719 | $302.94 | $257.03 - $468.55 |
| Q1 2021 | 2,302 | $644 | $269.69 | $238.40 - $296.38 |
| Q3 2020 | 5,942 | $1,686 | $278.91 | $261.87 - $312.00 |
| Q2 2020 | 10,926 | $2,923 | $300.59 | $257.60 - $350.24 |
| Q1 2020 | 2,233 | $706 | $303.47 | $262.25 - $374.99 |
| Q4 2019 | 3,659 | $1,086 | $277.46 | $219.70 - $318.00 |
| Q3 2019 | 1,271 | $296 | $232.85 | $215.78 - $246.99 |
| Q2 2019 | 1,370 | $320 | $230.90 | $219.20 - $245.35 |
| Q1 2019 | 1,094 | $259 | $314.89 | $216.12 - $344.00 |
| Q3 2016 | 1,610 | $504 | $296.18 | $240.07 - $333.65 |
| Q1 2016 | 1,933 | $503 | $264.15 | $242.07 - $301.02 |