Ticker: BIIB CUSIP: 09062X103 Class: COM
Note: Option positions (PUT/CALL) are excluded.
| Period | Shares | Value ($000) | Average Close | Price Range |
|---|---|---|---|---|
| Q4 2025 | 2,731 | $481 | $163.37 | $138.00 - $185.17 |
| Q3 2025 | 2,731 | $383 | $135.17 | $121.05 - $150.28 |
| Q2 2025 | 2,731 | $343 | $124.60 | $110.04 - $137.32 |
| Q1 2025 | 2,731 | $374 | $142.96 | $128.51 - $157.09 |
| Q4 2024 | 2,731 | $418 | $168.67 | $145.07 - $195.00 |
| Q3 2024 | 2,956 | $573 | $209.21 | $188.78 - $238.00 |
| Q2 2024 | 3,056 | $708 | $217.32 | $189.44 - $237.54 |
| Q1 2024 | 3,131 | $675 | $234.20 | $211.02 - $268.30 |
| Q4 2023 | 3,143 | $813 | $245.62 | $220.86 - $269.43 |
| Q3 2023 | 3,143 | $808 | $267.47 | $251.85 - $287.60 |
| Q2 2023 | 1,825 | $520 | $297.86 | $273.39 - $319.76 |
| Q1 2023 | 1,570 | $437 | $276.70 | $254.80 - $295.90 |
| Q4 2022 | 1,570 | $435 | $282.44 | $250.31 - $311.88 |
| Q3 2022 | 1,570 | $419 | $212.38 | $193.65 - $283.44 |
| Q2 2017 | 60,947 | $16,538 | $264.42 | $244.28 - $291.90 |
| Q1 2017 | 61,846 | $16,910 | $282.75 | $260.50 - $301.42 |
| Q4 2016 | 61,756 | $17,513 | $296.43 | $268.00 - $329.83 |
| Q3 2016 | 57,976 | $18,148 | $296.18 | $240.07 - $333.65 |
| Q2 2016 | 57,904 | $14,003 | $263.54 | $223.02 - $292.69 |
| Q1 2016 | 54,918 | $14,296 | $264.15 | $242.07 - $301.02 |
| Q4 2015 | 53,086 | $16,263 | $287.35 | $254.00 - $311.65 |
| Q3 2015 | 53,318 | $15,558 | $330.23 | $265.00 - $412.24 |