Ticker: BIIB CUSIP: 09062X103 Class: COM
Note: Option positions (PUT/CALL) are excluded.
| Period | Shares | Value ($000) | Average Close | Price Range |
|---|---|---|---|---|
| Q4 2025 | 6,667 | $1,173 | $163.37 | $138.00 - $185.17 |
| Q2 2023 | 3,390 | $966 | $297.86 | $273.39 - $319.76 |
| Q1 2023 | 3,361 | $934 | $276.70 | $254.80 - $295.90 |
| Q4 2022 | 2,855 | $791 | $282.44 | $250.31 - $311.88 |
| Q1 2020 | 1,355 | $429 | $303.47 | $262.25 - $374.99 |
| Q4 2018 | 1,354 | $407 | $319.14 | $278.46 - $358.41 |
| Q3 2018 | 1,049 | $371 | $344.30 | $288.13 - $388.67 |
| Q1 2018 | 1,782 | $488 | $310.41 | $259.76 - $370.57 |
| Q4 2017 | 1,497 | $477 | $320.80 | $301.81 - $348.84 |
| Q3 2017 | 1,292 | $405 | $296.11 | $269.50 - $330.00 |
| Q2 2017 | 1,295 | $351 | $264.42 | $244.28 - $291.90 |
| Q1 2017 | 1,305 | $357 | $282.75 | $260.50 - $301.42 |
| Q4 2016 | 1,370 | $389 | $296.43 | $268.00 - $329.83 |
| Q3 2016 | 1,370 | $429 | $296.18 | $240.07 - $333.65 |
| Q4 2015 | 697 | $214 | $287.35 | $254.00 - $311.65 |
| Q3 2015 | 721 | $210 | $330.23 | $265.00 - $412.24 |
| Q2 2015 | 1,971 | $796 | $401.33 | $368.88 - $432.88 |
| Q1 2015 | 3,984 | $1,682 | $394.14 | $334.40 - $480.18 |
| Q4 2014 | 4,214 | $1,430 | $323.51 | $290.85 - $361.93 |
| Q3 2014 | 4,214 | $1,394 | $329.72 | $298.31 - $349.00 |
| Q1 2014 | 4,565 | $1,396 | $317.43 | $270.62 - $358.89 |
| Q4 2013 | 5,635 | $1,575 | $258.65 | $221.07 - $298.82 |
| Q3 2013 | 4,095 | $986 | $223.81 | $203.55 - $248.95 |
| Q2 2013 | 4,235 | $911 | $213.68 | $191.80 - $242.64 |