Ticker: BIIB CUSIP: 09062X103 Class: COM
Note: Option positions (PUT/CALL) are excluded.
| Period | Shares | Value ($000) | Average Close | Price Range |
|---|---|---|---|---|
| Q4 2025 | 11,440 | $2,013 | $163.37 | $138.00 - $185.17 |
| Q3 2025 | 4,828 | $676 | $135.17 | $121.05 - $150.28 |
| Q2 2025 | 8,587 | $1,078 | $124.60 | $110.04 - $137.32 |
| Q1 2025 | 7,466 | $1,022 | $142.96 | $128.51 - $157.09 |
| Q4 2024 | 6,846 | $1,047 | $168.67 | $145.07 - $195.00 |
| Q3 2024 | 6,092 | $1,181 | $209.21 | $188.78 - $238.00 |
| Q2 2024 | 7,329 | $1,699 | $217.32 | $189.44 - $237.54 |
| Q1 2024 | 7,189 | $1,550 | $234.20 | $211.02 - $268.30 |
| Q4 2023 | 8,515 | $2,197 | $245.62 | $220.86 - $269.43 |
| Q3 2023 | 9,469 | $2,434 | $267.47 | $251.85 - $287.60 |
| Q2 2023 | 9,153 | $10,607 | $297.86 | $273.39 - $319.76 |
| Q1 2023 | 9,111 | $2,533 | $276.70 | $254.80 - $295.90 |
| Q4 2022 | 7,975 | $2,209 | $282.44 | $250.31 - $311.88 |
| Q3 2022 | 11,192 | $2,988 | $212.38 | $193.65 - $283.44 |
| Q2 2022 | 10,415 | $2,124 | $204.43 | $187.16 - $225.50 |
| Q1 2022 | 7,210 | $1,519 | $217.46 | $192.67 - $249.00 |
| Q4 2021 | 9,707 | $2,329 | $257.12 | $221.72 - $290.76 |
| Q3 2021 | 8,880 | $3,075 | $327.75 | $282.64 - $372.12 |
| Q2 2021 | 8,880 | $3,075 | $302.94 | $257.03 - $468.55 |
| Q1 2021 | 8,471 | $2,370 | $269.69 | $238.40 - $296.38 |
| Q4 2020 | 15,702 | $3,845 | $259.08 | $223.25 - $363.92 |
| Q3 2020 | 7,685 | $2,180 | $278.91 | $261.87 - $312.00 |
| Q4 2019 | 195 | $58 | $277.46 | $219.70 - $318.00 |
| Q3 2019 | 191 | $44 | $232.85 | $215.78 - $246.99 |
| Q2 2019 | 660 | $154 | $230.90 | $219.20 - $245.35 |
| Q1 2019 | 228 | $54 | $314.89 | $216.12 - $344.00 |
| Q4 2018 | 14 | $4 | $319.14 | $278.46 - $358.41 |
| Q3 2018 | 14 | $5 | $344.30 | $288.13 - $388.67 |
| Q2 2018 | 14 | $4 | $281.15 | $249.17 - $310.91 |
| Q2 2017 | 4 | $1 | $264.42 | $244.28 - $291.90 |
| Q3 2016 | 1 | $0 | $296.18 | $240.07 - $333.65 |
| Q2 2016 | 3,346 | $809 | $263.54 | $223.02 - $292.69 |
| Q1 2016 | 2,040 | $531 | $264.15 | $242.07 - $301.02 |
| Q4 2015 | 1,944 | $596 | $287.35 | $254.00 - $311.65 |
| Q3 2015 | 1,876 | $547 | $330.23 | $265.00 - $412.24 |