Ticker: BIIB CUSIP: 09062X103 Class: COM
Note: Option positions (PUT/CALL) are excluded.
| Period | Shares | Value ($000) | Average Close | Price Range |
|---|---|---|---|---|
| Q4 2025 | 17,375 | $3,058 | $163.37 | $138.00 - $185.17 |
| Q3 2025 | 16,532 | $2,316 | $135.17 | $121.05 - $150.28 |
| Q2 2025 | 14,595 | $1,833 | $124.60 | $110.04 - $137.32 |
| Q1 2025 | 12,582 | $1,722 | $142.96 | $128.51 - $157.09 |
| Q4 2024 | 9,712 | $1,485 | $168.67 | $145.07 - $195.00 |
| Q3 2024 | 6,494 | $1,259 | $209.21 | $188.78 - $238.00 |
| Q2 2024 | 7,309 | $1,694 | $217.32 | $189.44 - $237.54 |
| Q1 2024 | 7,474 | $1,612 | $234.20 | $211.02 - $268.30 |
| Q4 2023 | 10,160 | $2,629 | $245.62 | $220.86 - $269.43 |
| Q3 2023 | 10,334 | $2,656 | $267.47 | $251.85 - $287.60 |
| Q2 2023 | 11,091 | $3,159 | $297.86 | $273.39 - $319.76 |
| Q1 2023 | 8,553 | $2,378 | $276.70 | $254.80 - $295.90 |
| Q4 2022 | 8,786 | $2,433 | $282.44 | $250.31 - $311.88 |
| Q3 2022 | 7,758 | $2,071 | $212.38 | $193.65 - $283.44 |
| Q2 2022 | 7,108 | $1,450 | $204.43 | $187.16 - $225.50 |
| Q1 2022 | 5,827 | $1,227 | $217.46 | $192.67 - $249.00 |
| Q4 2021 | 6,693 | $1,606 | $257.12 | $221.72 - $290.76 |
| Q3 2021 | 6,599 | $1,867 | $327.75 | $282.64 - $372.12 |
| Q2 2021 | 6,042 | $2,092 | $302.94 | $257.03 - $468.55 |
| Q1 2021 | 6,172 | $1,727 | $269.69 | $238.40 - $296.38 |
| Q4 2020 | 5,163 | $1,264 | $259.08 | $223.25 - $363.92 |
| Q3 2020 | 4,829 | $1,379 | $278.91 | $261.87 - $312.00 |
| Q2 2020 | 5,149 | $1,363 | $300.59 | $257.60 - $350.24 |
| Q1 2020 | 4,103 | $1,203 | $303.47 | $262.25 - $374.99 |
| Q4 2019 | 4,271 | $1,257 | $277.46 | $219.70 - $318.00 |
| Q3 2019 | 1,300 | $303 | $232.85 | $215.78 - $246.99 |
| Q2 2019 | 1,279 | $299 | $230.90 | $219.20 - $245.35 |
| Q1 2019 | 1,385 | $327 | $314.89 | $216.12 - $344.00 |
| Q4 2018 | 1,799 | $541 | $319.14 | $278.46 - $358.41 |
| Q3 2018 | 1,645 | $581 | $344.30 | $288.13 - $388.67 |
| Q2 2018 | 354 | $103 | $281.15 | $249.17 - $310.91 |
| Q1 2018 | 584 | $156 | $310.41 | $259.76 - $370.57 |
| Q4 2017 | 355 | $113 | $320.80 | $301.81 - $348.84 |
| Q3 2017 | 20 | $6 | $296.11 | $269.50 - $330.00 |