Ticker: BIIB CUSIP: 09062X103 Class: COM
Note: Option positions (PUT/CALL) are excluded.
| Period | Shares | Value ($000) | Average Close | Price Range |
|---|---|---|---|---|
| Q4 2025 | 5,079 | $894 | $163.37 | $138.00 - $185.17 |
| Q3 2025 | 5,079 | $711 | $135.17 | $121.05 - $150.28 |
| Q2 2025 | 5,060 | $635 | $124.60 | $110.04 - $137.32 |
| Q1 2025 | 5,056 | $692 | $142.96 | $128.51 - $157.09 |
| Q4 2024 | 5,055 | $773 | $168.67 | $145.07 - $195.00 |
| Q3 2024 | 5,055 | $980 | $209.21 | $188.78 - $238.00 |
| Q2 2024 | 5,055 | $1,172 | $217.32 | $189.44 - $237.54 |
| Q1 2024 | 5,280 | $1,139 | $234.20 | $211.02 - $268.30 |
| Q4 2023 | 5,280 | $1,366 | $245.62 | $220.86 - $269.43 |
| Q3 2023 | 5,280 | $1,357 | $267.47 | $251.85 - $287.60 |
| Q2 2023 | 5,280 | $1,504 | $297.86 | $273.39 - $319.76 |
| Q1 2023 | 5,280 | $1,468 | $276.70 | $254.80 - $295.90 |
| Q4 2022 | 5,280 | $1,462 | $282.44 | $250.31 - $311.88 |
| Q3 2022 | 5,280 | $1,410 | $212.38 | $193.65 - $283.44 |
| Q1 2017 | 7,115 | $1,945 | $282.75 | $260.50 - $301.42 |
| Q4 2016 | 7,115 | $2,018 | $296.43 | $268.00 - $329.83 |
| Q3 2016 | 7,241 | $2,267 | $296.18 | $240.07 - $333.65 |
| Q2 2016 | 7,241 | $1,751 | $263.54 | $223.02 - $292.69 |
| Q1 2016 | 7,241 | $1,885 | $264.15 | $242.07 - $301.02 |
| Q4 2015 | 7,241 | $2,218 | $287.35 | $254.00 - $311.65 |
| Q3 2015 | 6,268 | $1,829 | $330.23 | $265.00 - $412.24 |
| Q2 2015 | 5,376 | $2,172 | $401.33 | $368.88 - $432.88 |
| Q1 2015 | 5,376 | $2,270 | $394.14 | $334.40 - $480.18 |
| Q4 2014 | 5,376 | $1,825 | $323.51 | $290.85 - $361.93 |
| Q3 2014 | 5,376 | $1,778 | $329.72 | $298.31 - $349.00 |
| Q2 2014 | 5,280 | $1,665 | $300.97 | $272.02 - $322.25 |
| Q1 2014 | 5,280 | $1,615 | $317.43 | $270.62 - $358.89 |
| Q4 2013 | 5,380 | $1,504 | $258.65 | $221.07 - $298.82 |
| Q3 2013 | 5,380 | $1,295 | $223.81 | $203.55 - $248.95 |
| Q2 2013 | 5,880 | $1,265 | $213.68 | $191.80 - $242.64 |