Ticker: BIIB CUSIP: 09062X103 Class: COM
Note: Option positions (PUT/CALL) are excluded.
| Period | Shares | Value ($000) | Average Close | Price Range |
|---|---|---|---|---|
| Q4 2025 | 110,268 | $19,406 | $163.37 | $138.00 - $185.17 |
| Q3 2025 | 59,989 | $8,403 | $135.17 | $121.05 - $150.28 |
| Q2 2025 | 28,312 | $3,556 | $124.60 | $110.04 - $137.32 |
| Q1 2025 | 2,476 | $339 | $142.96 | $128.51 - $157.09 |
| Q4 2024 | 1,670 | $255 | $168.67 | $145.07 - $195.00 |
| Q3 2024 | 3,596 | $689 | $209.21 | $188.78 - $238.00 |
| Q2 2024 | 4,832 | $1,120 | $217.32 | $189.44 - $237.54 |
| Q1 2024 | 3,940 | $849 | $234.20 | $211.02 - $268.30 |
| Q4 2023 | 3,752 | $971 | $245.62 | $220.86 - $269.43 |
| Q3 2023 | 5,203 | $1,337 | $267.47 | $251.85 - $287.60 |
| Q2 2023 | 5,145 | $1,466 | $297.86 | $273.39 - $319.76 |
| Q1 2023 | 4,896 | $1,361 | $276.70 | $254.80 - $295.90 |
| Q4 2022 | 5,174 | $1,433 | $282.44 | $250.31 - $311.88 |
| Q3 2022 | 47,908 | $12,792 | $212.38 | $193.65 - $283.44 |
| Q2 2022 | 74,932 | $15,282 | $204.43 | $187.16 - $225.50 |
| Q1 2022 | 61,994 | $13,056 | $217.46 | $192.67 - $249.00 |
| Q4 2021 | 82,312 | $19,748 | $257.12 | $221.72 - $290.76 |
| Q3 2021 | 89,301 | $25,271 | $327.75 | $282.64 - $372.12 |
| Q2 2021 | 93,592 | $32,407 | $302.94 | $257.03 - $468.55 |
| Q1 2021 | 133,037 | $37,216 | $269.69 | $238.40 - $296.38 |
| Q4 2020 | 150,044 | $36,740 | $259.08 | $223.25 - $363.92 |
| Q3 2020 | 226,125 | $64,189 | $278.91 | $261.87 - $312.00 |
| Q2 2020 | 132,804 | $35,543 | $300.59 | $257.60 - $350.24 |
| Q1 2020 | 104,173 | $32,988 | $303.47 | $262.25 - $374.99 |
| Q4 2019 | 20,741 | $6,153 | $277.46 | $219.70 - $318.00 |
| Q3 2019 | 7 | $2 | $232.85 | $215.78 - $246.99 |
| Q2 2019 | 1 | $0 | $230.90 | $219.20 - $245.35 |
| Q1 2015 | 18 | $8 | $394.14 | $334.40 - $480.18 |
| Q4 2014 | 10,050 | $3,411 | $323.51 | $290.85 - $361.93 |
| Q3 2014 | 12,098 | $4,002 | $329.72 | $298.31 - $349.00 |
| Q2 2014 | 22,350 | $7,047 | $300.97 | $272.02 - $322.25 |
| Q1 2014 | 25,880 | $7,916 | $317.43 | $270.62 - $358.89 |
| Q4 2013 | 22,172 | $6,199 | $258.65 | $221.07 - $298.82 |
| Q3 2013 | 21,416 | $5,156 | $223.81 | $203.55 - $248.95 |
| Q2 2013 | 8,675 | $1,867 | $213.68 | $191.80 - $242.64 |