Ticker: BIIB CUSIP: 09062X103 Class: COM
Note: Option positions (PUT/CALL) are excluded.
| Period | Shares | Value ($000) | Average Close | Price Range |
|---|---|---|---|---|
| Q4 2025 | 39,855 | $7 | $163.37 | $138.00 - $185.17 |
| Q3 2025 | 37,490 | $5,150 | $135.17 | $121.05 - $150.28 |
| Q2 2025 | 35,752 | $4,490 | $124.60 | $110.04 - $137.32 |
| Q1 2025 | 33,729 | $4,615 | $142.96 | $128.51 - $157.09 |
| Q4 2024 | 33,425 | $5,111 | $168.67 | $145.07 - $195.00 |
| Q3 2024 | 34,013 | $6,593 | $209.21 | $188.78 - $238.00 |
| Q2 2024 | 34,260 | $7,942 | $217.32 | $189.44 - $237.54 |
| Q1 2024 | 34,188 | $7,372 | $234.20 | $211.02 - $268.30 |
| Q4 2023 | 34,188 | $9 | $245.62 | $220.86 - $269.43 |
| Q3 2023 | 33,075 | $8,501 | $267.47 | $251.85 - $287.60 |
| Q2 2023 | 31,413 | $8,948 | $297.86 | $273.39 - $319.76 |
| Q1 2023 | 31,844 | $8,854 | $276.70 | $254.80 - $295.90 |
| Q4 2022 | 31,041 | $8,596 | $282.44 | $250.31 - $311.88 |
| Q3 2022 | 27,810 | $7,425 | $212.38 | $193.65 - $283.44 |
| Q2 2022 | 26,833 | $5,472 | $204.43 | $187.16 - $225.50 |
| Q1 2022 | 23,597 | $4,970 | $217.46 | $192.67 - $249.00 |
| Q4 2021 | 20,221 | $4,851 | $257.12 | $221.72 - $290.76 |
| Q3 2021 | 20,449 | $5,787 | $327.75 | $282.64 - $372.12 |
| Q2 2021 | 20,529 | $7,109 | $302.94 | $257.03 - $468.55 |
| Q1 2021 | 17,293 | $4,838 | $269.69 | $238.40 - $296.38 |
| Q4 2020 | 15,462 | $3,786 | $259.08 | $223.25 - $363.92 |
| Q3 2020 | 13,800 | $3,915 | $278.91 | $261.87 - $312.00 |
| Q2 2020 | 13,004 | $3,479 | $300.59 | $257.60 - $350.24 |
| Q1 2020 | 18,441 | $5,830 | $303.47 | $262.25 - $374.99 |
| Q4 2019 | 19,663 | $5,835 | $277.46 | $219.70 - $318.00 |
| Q3 2019 | 21,184 | $4,932 | $232.85 | $215.78 - $246.99 |
| Q2 2019 | 14,171 | $3,314 | $230.90 | $219.20 - $245.35 |
| Q1 2019 | 13,369 | $3,160 | $314.89 | $216.12 - $344.00 |
| Q4 2018 | 11,887 | $3,577 | $319.14 | $278.46 - $358.41 |
| Q3 2018 | 11,124 | $3,930 | $344.30 | $288.13 - $388.67 |
| Q2 2018 | 9,532 | $2,767 | $281.15 | $249.17 - $310.91 |
| Q1 2018 | 6,585 | $1,803 | $310.41 | $259.76 - $370.57 |
| Q4 2017 | 5,934 | $1,890 | $320.80 | $301.81 - $348.84 |
| Q3 2017 | 6,030 | $1,888 | $296.11 | $269.50 - $330.00 |
| Q2 2017 | 5,949 | $1,614 | $264.42 | $244.28 - $291.90 |
| Q1 2017 | 4,458 | $1,219 | $282.75 | $260.50 - $301.42 |
| Q4 2016 | 2,854 | $809 | $296.43 | $268.00 - $329.83 |