Ticker: BIIB CUSIP: 09062X103 Class: COM
Note: Option positions (PUT/CALL) are excluded.
| Period | Shares | Value ($000) | Average Close | Price Range |
|---|---|---|---|---|
| Q4 2025 | 5,571 | $1 | $163.37 | $138.00 - $185.17 |
| Q3 2025 | 5,688 | $1 | $135.17 | $121.05 - $150.28 |
| Q2 2025 | 6,626 | $1 | $124.60 | $110.04 - $137.32 |
| Q1 2025 | 5,285 | $1 | $142.96 | $128.51 - $157.09 |
| Q4 2024 | 6,614 | $1 | $168.67 | $145.07 - $195.00 |
| Q3 2024 | 7,171 | $1 | $209.21 | $188.78 - $238.00 |
| Q2 2024 | 5,894 | $1 | $217.32 | $189.44 - $237.54 |
| Q1 2024 | 5,509 | $1 | $234.20 | $211.02 - $268.30 |
| Q4 2023 | 5,763 | $1 | $245.62 | $220.86 - $269.43 |
| Q3 2023 | 6,527 | $2 | $267.47 | $251.85 - $287.60 |
| Q2 2023 | 7,737 | $2 | $297.86 | $273.39 - $319.76 |
| Q1 2023 | 6,079 | $2 | $276.70 | $254.80 - $295.90 |
| Q4 2022 | 3,900 | $1 | $282.44 | $250.31 - $311.88 |
| Q3 2022 | 1,155 | $308 | $212.38 | $193.65 - $283.44 |
| Q2 2022 | 395 | $81 | $204.43 | $187.16 - $225.50 |
| Q4 2021 | 2,271 | $545 | $257.12 | $221.72 - $290.76 |
| Q3 2021 | 2,271 | $643 | $327.75 | $282.64 - $372.12 |
| Q2 2021 | 3,133 | $1,085 | $302.94 | $257.03 - $468.55 |
| Q1 2021 | 3,133 | $876 | $269.69 | $238.40 - $296.38 |
| Q4 2020 | 20,923 | $5,123 | $259.08 | $223.25 - $363.92 |
| Q3 2020 | 46,240 | $13,117 | $278.91 | $261.87 - $312.00 |
| Q2 2020 | 39,779 | $10,643 | $300.59 | $257.60 - $350.24 |
| Q1 2020 | 17,268 | $5,463 | $303.47 | $262.25 - $374.99 |
| Q4 2019 | 15,332 | $4,549 | $277.46 | $219.70 - $318.00 |
| Q3 2019 | 25,270 | $5,883 | $232.85 | $215.78 - $246.99 |
| Q2 2019 | 4,400 | $1,029 | $230.90 | $219.20 - $245.35 |