Ticker: BIIB CUSIP: 09062X103 Class: COM
Note: Option positions (PUT/CALL) are excluded.
| Period | Shares | Value ($000) | Average Close | Price Range |
|---|---|---|---|---|
| Q4 2025 | 7,576 | $1,333 | $163.37 | $138.00 - $185.17 |
| Q3 2025 | 3,240 | $454 | $135.17 | $121.05 - $150.28 |
| Q3 2024 | 1,200 | $233 | $209.21 | $188.78 - $238.00 |
| Q2 2024 | 1,460 | $338 | $217.32 | $189.44 - $237.54 |
| Q1 2024 | 1,070 | $231 | $234.20 | $211.02 - $268.30 |
| Q3 2023 | 1,100 | $283 | $267.47 | $251.85 - $287.60 |
| Q1 2023 | 950 | $264 | $276.70 | $254.80 - $295.90 |
| Q4 2022 | 950 | $263 | $282.44 | $250.31 - $311.88 |
| Q3 2021 | 2,870 | $812 | $327.75 | $282.64 - $372.12 |
| Q2 2021 | 5,300 | $1,835 | $302.94 | $257.03 - $468.55 |
| Q1 2021 | 5,850 | $1,637 | $269.69 | $238.40 - $296.38 |
| Q4 2020 | 8,650 | $2,118 | $259.08 | $223.25 - $363.92 |
| Q3 2020 | 5,200 | $1,475 | $278.91 | $261.87 - $312.00 |
| Q2 2020 | 5,760 | $1,541 | $300.59 | $257.60 - $350.24 |
| Q1 2020 | 1,540 | $487 | $303.47 | $262.25 - $374.99 |
| Q2 2018 | 9,800 | $2,844 | $281.15 | $249.17 - $310.91 |
| Q1 2018 | 12,350 | $3,382 | $310.41 | $259.76 - $370.57 |
| Q4 2017 | 12,460 | $3,969 | $320.80 | $301.81 - $348.84 |
| Q3 2017 | 14,450 | $4,525 | $296.11 | $269.50 - $330.00 |
| Q2 2017 | 15,950 | $4,328 | $264.42 | $244.28 - $291.90 |
| Q1 2017 | 18,860 | $5,157 | $282.75 | $260.50 - $301.42 |
| Q4 2016 | 19,250 | $5,459 | $296.43 | $268.00 - $329.83 |