Ticker: BIIB CUSIP: 09062X103 Class: COM
Note: Option positions (PUT/CALL) are excluded.
| Period | Shares | Value ($000) | Average Close | Price Range |
|---|---|---|---|---|
| Q2 2025 | 3,144 | $395 | $124.60 | $110.04 - $137.32 |
| Q1 2025 | 2,863 | $392 | $142.96 | $128.51 - $157.09 |
| Q4 2024 | 2,024 | $310 | $168.67 | $145.07 - $195.00 |
| Q3 2024 | 1,865 | $362 | $209.21 | $188.78 - $238.00 |
| Q2 2024 | 2,008 | $465 | $217.32 | $189.44 - $237.54 |
| Q1 2024 | 1,908 | $411 | $234.20 | $211.02 - $268.30 |
| Q4 2023 | 1,943 | $503 | $245.62 | $220.86 - $269.43 |
| Q3 2023 | 2,127 | $547 | $267.47 | $251.85 - $287.60 |
| Q2 2023 | 2,373 | $676 | $297.86 | $273.39 - $319.76 |
| Q1 2023 | 3,056 | $850 | $276.70 | $254.80 - $295.90 |
| Q4 2022 | 3,215 | $890 | $282.44 | $250.31 - $311.88 |
| Q3 2022 | 2,714 | $724,617 | $212.38 | $193.65 - $283.44 |
| Q2 2022 | 2,626 | $535,468 | $204.43 | $187.16 - $225.50 |
| Q1 2022 | 2,666 | $562 | $217.46 | $192.67 - $249.00 |
| Q4 2021 | 2,777 | $666 | $257.12 | $221.72 - $290.76 |
| Q3 2021 | 2,796 | $791 | $327.75 | $282.64 - $372.12 |
| Q2 2021 | 4,861 | $1,683 | $302.94 | $257.03 - $468.55 |
| Q1 2021 | 4,944 | $1,383 | $269.69 | $238.40 - $296.38 |
| Q4 2020 | 4,905 | $1,201 | $259.08 | $223.25 - $363.92 |
| Q3 2020 | 5,458 | $1,548 | $278.91 | $261.87 - $312.00 |
| Q2 2020 | 6,372 | $1,705 | $300.59 | $257.60 - $350.24 |
| Q1 2020 | 7,503 | $2,541 | $303.47 | $262.25 - $374.99 |
| Q4 2019 | 7,284 | $2,161 | $277.46 | $219.70 - $318.00 |
| Q3 2019 | 7,141 | $1,662 | $232.85 | $215.78 - $246.99 |
| Q2 2019 | 8,361 | $1,955 | $230.90 | $219.20 - $245.35 |
| Q1 2019 | 8,391 | $1,983 | $314.89 | $216.12 - $344.00 |
| Q4 2018 | 10,309 | $3,102 | $319.14 | $278.46 - $358.41 |
| Q3 2018 | 10,555 | $3,660 | $344.30 | $288.13 - $388.67 |
| Q2 2018 | 14,660 | $4,255 | $281.15 | $249.17 - $310.91 |
| Q1 2018 | 6,070 | $1,662 | $310.41 | $259.76 - $370.57 |
| Q4 2017 | 7,172 | $2,285 | $320.80 | $301.81 - $348.84 |
| Q3 2017 | 6,738 | $2,110 | $296.11 | $269.50 - $330.00 |
| Q2 2017 | 4,182 | $1,135 | $264.42 | $244.28 - $291.90 |
| Q1 2017 | 6,052 | $1,655 | $282.75 | $260.50 - $301.42 |
| Q4 2016 | 4,633 | $1,314 | $296.43 | $268.00 - $329.83 |
| Q3 2016 | 5,867 | $1,837 | $296.18 | $240.07 - $333.65 |
| Q2 2016 | 7,015 | $1,696 | $263.54 | $223.02 - $292.69 |
| Q1 2016 | 5,739 | $1,494 | $264.15 | $242.07 - $301.02 |
| Q4 2015 | 5,437 | $1,666 | $287.35 | $254.00 - $311.65 |
| Q3 2015 | 6,828 | $383 | $330.23 | $265.00 - $412.24 |
| Q2 2015 | 3,520 | $1,422 | $401.33 | $368.88 - $432.88 |
| Q1 2015 | 2,423 | $1,023 | $394.14 | $334.40 - $480.18 |
| Q4 2014 | 1,230 | $417 | $323.51 | $290.85 - $361.93 |