Ticker: BIIB CUSIP: 09062X103 Class: COM
Note: Option positions (PUT/CALL) are excluded.
| Period | Shares | Value ($000) | Average Close | Price Range |
|---|---|---|---|---|
| Q4 2025 | 23,503 | $4,136 | $163.37 | $138.00 - $185.17 |
| Q3 2025 | 20,888 | $2,926 | $135.17 | $121.05 - $150.28 |
| Q2 2025 | 12,888 | $1,619 | $124.60 | $110.04 - $137.32 |
| Q1 2025 | 12,608 | $1,725 | $142.96 | $128.51 - $157.09 |
| Q4 2024 | 13,269 | $2,029 | $168.67 | $145.07 - $195.00 |
| Q3 2024 | 12,869 | $2,494 | $209.21 | $188.78 - $238.00 |
| Q2 2024 | 13,974 | $3,239 | $217.32 | $189.44 - $237.54 |
| Q1 2024 | 14,860 | $3,204 | $234.20 | $211.02 - $268.30 |
| Q4 2023 | 4,435 | $1,148 | $245.62 | $220.86 - $269.43 |
| Q3 2023 | 4,431 | $1,139 | $267.47 | $251.85 - $287.60 |
| Q2 2023 | 4,135 | $1,178 | $297.86 | $273.39 - $319.76 |
| Q1 2023 | 4,196 | $1,167 | $276.70 | $254.80 - $295.90 |
| Q4 2022 | 4,073 | $1,128 | $282.44 | $250.31 - $311.88 |
| Q3 2022 | 1,925 | $514 | $212.38 | $193.65 - $283.44 |
| Q2 2022 | 3,412 | $696 | $204.43 | $187.16 - $225.50 |
| Q1 2022 | 3,423 | $721 | $217.46 | $192.67 - $249.00 |
| Q4 2021 | 3,814 | $915 | $257.12 | $221.72 - $290.76 |
| Q3 2021 | 3,937 | $1,114 | $327.75 | $282.64 - $372.12 |
| Q2 2021 | 4,371 | $1,514 | $302.94 | $257.03 - $468.55 |
| Q1 2021 | 4,144 | $1,159 | $269.69 | $238.40 - $296.38 |
| Q4 2020 | 4,759 | $1,165 | $259.08 | $223.25 - $363.92 |
| Q3 2020 | 733 | $208 | $278.91 | $261.87 - $312.00 |
| Q1 2020 | 797 | $252 | $303.47 | $262.25 - $374.99 |
| Q4 2018 | 707 | $212 | $319.14 | $278.46 - $358.41 |
| Q3 2018 | 709 | $250 | $344.30 | $288.13 - $388.67 |
| Q2 2016 | 870 | $208 | $263.54 | $223.02 - $292.69 |
| Q1 2016 | 883 | $230 | $264.15 | $242.07 - $301.02 |
| Q4 2015 | 885 | $273 | $287.35 | $254.00 - $311.65 |