Ticker: BIIB CUSIP: 09062X103 Class: COM
Note: Option positions (PUT/CALL) are excluded.
| Period | Shares | Value ($000) | Average Close | Price Range |
|---|---|---|---|---|
| Q4 2025 | 1,564 | $275 | $163.37 | $138.00 - $185.17 |
| Q3 2025 | 1,664 | $233 | $135.17 | $121.05 - $150.28 |
| Q2 2023 | 744 | $212 | $297.86 | $273.39 - $319.76 |
| Q1 2023 | 868 | $241 | $276.70 | $254.80 - $295.90 |
| Q4 2022 | 868 | $240 | $282.44 | $250.31 - $311.88 |
| Q3 2022 | 868 | $232 | $212.38 | $193.65 - $283.44 |
| Q4 2021 | 878 | $211 | $257.12 | $221.72 - $290.76 |
| Q3 2021 | 878 | $248 | $327.75 | $282.64 - $372.12 |
| Q2 2021 | 878 | $304 | $302.94 | $257.03 - $468.55 |
| Q1 2021 | 778 | $218 | $269.69 | $238.40 - $296.38 |
| Q3 2020 | 778 | $221 | $278.91 | $261.87 - $312.00 |
| Q2 2020 | 778 | $208 | $300.59 | $257.60 - $350.24 |
| Q1 2020 | 767 | $243 | $303.47 | $262.25 - $374.99 |
| Q4 2019 | 757 | $225 | $277.46 | $219.70 - $318.00 |
| Q4 2016 | 33 | $9 | $296.43 | $268.00 - $329.83 |
| Q3 2016 | 33 | $10 | $296.18 | $240.07 - $333.65 |
| Q2 2016 | 33 | $8 | $263.54 | $223.02 - $292.69 |
| Q1 2016 | 73 | $19 | $264.15 | $242.07 - $301.02 |
| Q4 2015 | 73 | $22 | $287.35 | $254.00 - $311.65 |
| Q3 2015 | 73 | $21 | $330.23 | $265.00 - $412.24 |
| Q2 2015 | 107 | $43 | $401.33 | $368.88 - $432.88 |
| Q1 2015 | 73 | $31 | $394.14 | $334.40 - $480.18 |
| Q4 2014 | 33 | $11 | $323.51 | $290.85 - $361.93 |
| Q3 2014 | 40 | $13 | $329.72 | $298.31 - $349.00 |