Ticker: BIIB CUSIP: 09062X103 Class: COM
Note: Option positions (PUT/CALL) are excluded.
| Period | Shares | Value ($000) | Average Close | Price Range |
|---|---|---|---|---|
| Q4 2025 | 1,425 | $251 | $163.37 | $138.00 - $185.17 |
| Q4 2024 | 1,471 | $225 | $168.67 | $145.07 - $195.00 |
| Q2 2024 | 1,510 | $350 | $217.32 | $189.44 - $237.54 |
| Q4 2023 | 1,779 | $460 | $245.62 | $220.86 - $269.43 |
| Q3 2023 | 1,686 | $433 | $267.47 | $251.85 - $287.60 |
| Q1 2023 | 1,686 | $469 | $276.70 | $254.80 - $295.90 |
| Q4 2022 | 1,724 | $0 | $282.44 | $250.31 - $311.88 |
| Q3 2022 | 1,724 | $460 | $212.38 | $193.65 - $283.44 |
| Q4 2021 | 1,084 | $260 | $257.12 | $221.72 - $290.76 |
| Q3 2021 | 1,084 | $306 | $327.75 | $282.64 - $372.12 |
| Q2 2021 | 1,084 | $375 | $302.94 | $257.03 - $468.55 |
| Q1 2021 | 1,132 | $316 | $269.69 | $238.40 - $296.38 |
| Q4 2020 | 1,169 | $286 | $259.08 | $223.25 - $363.92 |
| Q3 2020 | 1,292 | $366 | $278.91 | $261.87 - $312.00 |
| Q2 2020 | 992 | $265 | $300.59 | $257.60 - $350.24 |
| Q1 2020 | 1,009 | $319 | $303.47 | $262.25 - $374.99 |
| Q4 2019 | 965 | $286 | $277.46 | $219.70 - $318.00 |
| Q3 2019 | 1,037 | $241 | $232.85 | $215.78 - $246.99 |
| Q2 2019 | 2,853 | $667 | $230.90 | $219.20 - $245.35 |
| Q1 2019 | 2,909 | $687 | $314.89 | $216.12 - $344.00 |
| Q4 2018 | 3,236 | $973 | $319.14 | $278.46 - $358.41 |
| Q3 2018 | 3,105 | $1,097 | $344.30 | $288.13 - $388.67 |
| Q2 2018 | 3,048 | $884 | $281.15 | $249.17 - $310.91 |
| Q1 2018 | 2,978 | $815 | $310.41 | $259.76 - $370.57 |
| Q4 2017 | 3,135 | $998 | $320.80 | $301.81 - $348.84 |