Ticker: BIIB CUSIP: 09062X103 Class: COM
Note: Option positions (PUT/CALL) are excluded.
| Period | Shares | Value ($000) | Average Close | Price Range |
|---|---|---|---|---|
| Q4 2025 | 1,506 | $265 | $163.37 | $138.00 - $185.17 |
| Q1 2020 | 639 | $202 | $303.47 | $262.25 - $374.99 |
| Q3 2018 | 617 | $218 | $344.30 | $288.13 - $388.67 |
| Q4 2016 | 943 | $268 | $296.43 | $268.00 - $329.83 |
| Q3 2016 | 1,056 | $330 | $296.18 | $240.07 - $333.65 |
| Q1 2016 | 1,313 | $341 | $264.15 | $242.07 - $301.02 |
| Q4 2015 | 1,543 | $472 | $287.35 | $254.00 - $311.65 |
| Q3 2015 | 1,447 | $422 | $330.23 | $265.00 - $412.24 |
| Q2 2015 | 1,404 | $566 | $401.33 | $368.88 - $432.88 |
| Q1 2015 | 1,361 | $574 | $394.14 | $334.40 - $480.18 |
| Q4 2014 | 1,546 | $524 | $323.51 | $290.85 - $361.93 |
| Q3 2014 | 1,237 | $410 | $329.72 | $298.31 - $349.00 |
| Q2 2014 | 1,104 | $348 | $300.97 | $272.02 - $322.25 |
| Q1 2014 | 1,135 | $348 | $317.43 | $270.62 - $358.89 |
| Q4 2013 | 1,261 | $352 | $258.65 | $221.07 - $298.82 |
| Q3 2013 | 1,043 | $251 | $223.81 | $203.55 - $248.95 |
| Q2 2013 | 1,135 | $245 | $213.68 | $191.80 - $242.64 |