Ticker: BIIB CUSIP: 09062X103 Class: COM
Note: Option positions (PUT/CALL) are excluded.
| Period | Shares | Value ($000) | Average Close | Price Range |
|---|---|---|---|---|
| Q4 2025 | 10,676 | $1,879 | $163.37 | $138.00 - $185.17 |
| Q3 2025 | 34,786 | $4,873 | $135.17 | $121.05 - $150.28 |
| Q2 2025 | 35,761 | $4,491 | $124.60 | $110.04 - $137.32 |
| Q1 2025 | 38,112 | $5,215 | $142.96 | $128.51 - $157.09 |
| Q4 2024 | 21,669 | $3,314 | $168.67 | $145.07 - $195.00 |
| Q3 2024 | 24,111 | $4,674 | $209.21 | $188.78 - $238.00 |
| Q2 2024 | 34,581 | $8,017 | $217.32 | $189.44 - $237.54 |
| Q1 2024 | 27,076 | $5,838 | $234.20 | $211.02 - $268.30 |
| Q4 2023 | 84,463 | $21,856 | $245.62 | $220.86 - $269.43 |
| Q3 2023 | 214,472 | $55,121 | $267.47 | $251.85 - $287.60 |
| Q2 2023 | 335,308 | $95,512 | $297.86 | $273.39 - $319.76 |
| Q1 2023 | 328,393 | $91,303 | $276.70 | $254.80 - $295.90 |
| Q4 2022 | 229,810 | $63,639 | $282.44 | $250.31 - $311.88 |
| Q3 2022 | 72,742 | $19,422 | $212.38 | $193.65 - $283.44 |
| Q2 2022 | 32,666 | $6,662 | $204.43 | $187.16 - $225.50 |
| Q1 2022 | 70,066 | $14,756 | $217.46 | $192.67 - $249.00 |
| Q4 2021 | 59,651 | $14,311 | $257.12 | $221.72 - $290.76 |
| Q3 2021 | 118,756 | $33,608 | $327.75 | $282.64 - $372.12 |
| Q2 2021 | 143,550 | $49,708 | $302.94 | $257.03 - $468.55 |
| Q1 2021 | 116,433 | $32,572 | $269.69 | $238.40 - $296.38 |
| Q4 2020 | 142,201 | $34,819 | $259.08 | $223.25 - $363.92 |
| Q3 2020 | 143,209 | $40,626 | $278.91 | $261.87 - $312.00 |
| Q2 2020 | 186,633 | $49,932 | $300.59 | $257.60 - $350.24 |
| Q1 2020 | 278,738 | $88,186 | $303.47 | $262.25 - $374.99 |
| Q4 2019 | 276,302 | $81,986 | $277.46 | $219.70 - $318.00 |