Ticker: BIIB CUSIP: 09062X103 Class: COM
Note: Option positions (PUT/CALL) are excluded.
| Period | Shares | Value ($000) | Average Close | Price Range |
|---|---|---|---|---|
| Q4 2025 | 216 | $38 | $163.37 | $138.00 - $185.17 |
| Q3 2025 | 51 | $7 | $135.17 | $121.05 - $150.28 |
| Q2 2025 | 50 | $6 | $124.60 | $110.04 - $137.32 |
| Q1 2025 | 38 | $5 | $142.96 | $128.51 - $157.09 |
| Q4 2024 | 54 | $8 | $168.67 | $145.07 - $195.00 |
| Q3 2024 | 954 | $185 | $209.21 | $188.78 - $238.00 |
| Q2 2024 | 1,273 | $295 | $217.32 | $189.44 - $237.54 |
| Q1 2024 | 32 | $7 | $234.20 | $211.02 - $268.30 |
| Q2 2023 | 12,210 | $3,478 | $297.86 | $273.39 - $319.76 |
| Q1 2023 | 3,547 | $986 | $276.70 | $254.80 - $295.90 |
| Q4 2022 | 7,715 | $2,136 | $282.44 | $250.31 - $311.88 |
| Q3 2022 | 6,399 | $1,708 | $212.38 | $193.65 - $283.44 |
| Q2 2022 | 934 | $190 | $204.43 | $187.16 - $225.50 |
| Q1 2022 | 1,241 | $261 | $217.46 | $192.67 - $249.00 |
| Q3 2021 | 27,178 | $7,691 | $327.75 | $282.64 - $372.12 |
| Q2 2021 | 20,515 | $7,104 | $302.94 | $257.03 - $468.55 |
| Q1 2021 | 4,803 | $1,344 | $269.69 | $238.40 - $296.38 |
| Q4 2020 | 921 | $226 | $259.08 | $223.25 - $363.92 |
| Q3 2020 | 19,441 | $5,516 | $278.91 | $261.87 - $312.00 |
| Q2 2020 | 14,765 | $3,951 | $300.59 | $257.60 - $350.24 |
| Q1 2020 | 12,806 | $4,053 | $303.47 | $262.25 - $374.99 |
| Q4 2019 | 28,305 | $8,398 | $277.46 | $219.70 - $318.00 |
| Q3 2019 | 37,013 | $8,618 | $232.85 | $215.78 - $246.99 |
| Q2 2019 | 33,729 | $7,889 | $230.90 | $219.20 - $245.35 |
| Q1 2019 | 23,813 | $5,629 | $314.89 | $216.12 - $344.00 |
| Q4 2018 | 21,918 | $6,596 | $319.14 | $278.46 - $358.41 |
| Q3 2018 | 20,139 | $7,115 | $344.30 | $288.13 - $388.67 |
| Q2 2018 | 22,328 | $6,480,479 | $281.15 | $249.17 - $310.91 |
| Q1 2018 | 17,230 | $4,718 | $310.41 | $259.76 - $370.57 |
| Q4 2017 | 15,538 | $4,949 | $320.80 | $301.81 - $348.84 |
| Q3 2017 | 9,753 | $3,054 | $296.11 | $269.50 - $330.00 |
| Q2 2017 | 5,927 | $1,608 | $264.42 | $244.28 - $291.90 |
| Q1 2017 | 9,707 | $2,653 | $282.75 | $260.50 - $301.42 |
| Q4 2016 | 5,232 | $1,483 | $296.43 | $268.00 - $329.83 |
| Q3 2016 | 4,774 | $1,494 | $296.18 | $240.07 - $333.65 |
| Q2 2016 | 6,433 | $1,556 | $263.54 | $223.02 - $292.69 |
| Q1 2016 | 5,814 | $1,513 | $264.15 | $242.07 - $301.02 |
| Q4 2015 | 1,551 | $475 | $287.35 | $254.00 - $311.65 |
| Q3 2015 | 12,564 | $3,667 | $330.23 | $265.00 - $412.24 |
| Q2 2015 | 9,965 | $4,025 | $401.33 | $368.88 - $432.88 |
| Q1 2015 | 2,200 | $929 | $394.14 | $334.40 - $480.18 |