Ticker: BIIB CUSIP: 09062X103 Class: COM
Note: Option positions (PUT/CALL) are excluded.
| Period | Shares | Value ($000) | Average Close | Price Range |
|---|---|---|---|---|
| Q4 2025 | 8,661 | $1,524 | $163.37 | $138.00 - $185.17 |
| Q3 2025 | 9,032 | $1,265 | $135.17 | $121.05 - $150.28 |
| Q2 2025 | 9,723 | $1,221 | $124.60 | $110.04 - $137.32 |
| Q1 2025 | 8,101 | $1,109 | $142.96 | $128.51 - $157.09 |
| Q4 2024 | 8,636 | $1,321 | $168.67 | $145.07 - $195.00 |
| Q3 2024 | 5,565 | $1,079 | $209.21 | $188.78 - $238.00 |
| Q3 2019 | 15,166 | $3,531 | $232.85 | $215.78 - $246.99 |
| Q2 2019 | 35,966 | $8,411 | $230.90 | $219.20 - $245.35 |
| Q1 2019 | 24,203 | $5,721 | $314.89 | $216.12 - $344.00 |
| Q4 2018 | 24,888 | $7,489 | $319.14 | $278.46 - $358.41 |
| Q3 2018 | 24,708 | $8,730 | $344.30 | $288.13 - $388.67 |
| Q1 2018 | 28,718 | $7,864 | $310.41 | $259.76 - $370.57 |
| Q4 2017 | 25,388 | $8,088 | $320.80 | $301.81 - $348.84 |
| Q3 2017 | 9,828 | $3,077 | $296.11 | $269.50 - $330.00 |
| Q2 2017 | 1,121 | $304 | $264.42 | $244.28 - $291.90 |
| Q1 2017 | 27,317 | $7,469 | $282.75 | $260.50 - $301.42 |
| Q2 2015 | 530 | $214 | $401.33 | $368.88 - $432.88 |
| Q2 2014 | 1,403 | $442 | $300.97 | $272.02 - $322.25 |
| Q4 2013 | 840 | $235 | $258.65 | $221.07 - $298.82 |
| Q3 2013 | 15,586 | $3,752 | $223.81 | $203.55 - $248.95 |