Ticker: BIIB CUSIP: 09062X103 Class: COM
Note: Option positions (PUT/CALL) are excluded.
| Period | Shares | Value ($000) | Average Close | Price Range |
|---|---|---|---|---|
| Q3 2025 | 3,967 | $1 | $135.17 | $121.05 - $150.28 |
| Q1 2025 | 2,884 | $0 | $142.96 | $128.51 - $157.09 |
| Q1 2024 | 9,269 | $2 | $234.20 | $211.02 - $268.30 |
| Q4 2023 | 6,304 | $2 | $245.62 | $220.86 - $269.43 |
| Q2 2023 | 2,198 | $1 | $297.86 | $273.39 - $319.76 |
| Q1 2022 | 1,165 | $245 | $217.46 | $192.67 - $249.00 |
| Q3 2021 | 2,794 | $791 | $327.75 | $282.64 - $372.12 |
| Q1 2021 | 1,532 | $429 | $269.69 | $238.40 - $296.38 |
| Q4 2019 | 11,686 | $3,468 | $277.46 | $219.70 - $318.00 |
| Q4 2018 | 1,207 | $363 | $319.14 | $278.46 - $358.41 |
| Q2 2018 | 24,681 | $7,163 | $281.15 | $249.17 - $310.91 |
| Q1 2018 | 9,887 | $2,707 | $310.41 | $259.76 - $370.57 |
| Q4 2017 | 8,724 | $2,779 | $320.80 | $301.81 - $348.84 |
| Q3 2017 | 13,635 | $4,269 | $296.11 | $269.50 - $330.00 |
| Q1 2017 | 20,998 | $5,741 | $282.75 | $260.50 - $301.42 |
| Q4 2016 | 31,490 | $8,930 | $296.43 | $268.00 - $329.83 |
| Q2 2016 | 9,552 | $2,310 | $263.54 | $223.02 - $292.69 |
| Q2 2015 | 1,474 | $595 | $401.33 | $368.88 - $432.88 |
| Q1 2015 | 9,588 | $4,048 | $394.14 | $334.40 - $480.18 |
| Q4 2014 | 1,217 | $413 | $323.51 | $290.85 - $361.93 |
| Q3 2014 | 70,671 | $23,379 | $329.72 | $298.31 - $349.00 |