Ticker: BIIB CUSIP: 09062X103 Class: COM
Note: Option positions (PUT/CALL) are excluded.
| Period | Shares | Value ($000) | Average Close | Price Range |
|---|---|---|---|---|
| Q3 2025 | 192,872 | $27,018 | $135.17 | $121.05 - $150.28 |
| Q4 2024 | 179,191 | $27,402 | $168.67 | $145.07 - $195.00 |
| Q3 2024 | 152,661 | $29,592 | $209.21 | $188.78 - $238.00 |
| Q2 2024 | 148,514 | $34,429 | $217.32 | $189.44 - $237.54 |
| Q1 2024 | 181,524 | $39,142 | $234.20 | $211.02 - $268.30 |
| Q4 2023 | 127,488 | $32,990 | $245.62 | $220.86 - $269.43 |
| Q3 2023 | 118,204 | $30,380 | $267.47 | $251.85 - $287.60 |
| Q2 2023 | 106,815 | $30,426 | $297.86 | $273.39 - $319.76 |
| Q1 2023 | 141,626 | $39,376 | $276.70 | $254.80 - $295.90 |
| Q4 2022 | 134,427 | $37 | $282.44 | $250.31 - $311.88 |
| Q3 2021 | 105,756 | $29,928 | $327.75 | $282.64 - $372.12 |
| Q3 2020 | 100,861 | $28,612 | $278.91 | $261.87 - $312.00 |
| Q2 2020 | 129,351 | $34,608 | $300.59 | $257.60 - $350.24 |
| Q1 2020 | 105,606 | $33,412 | $303.47 | $262.25 - $374.99 |
| Q4 2019 | 134,086 | $39,787 | $277.46 | $219.70 - $318.00 |
| Q3 2019 | 158,830 | $36,979 | $232.85 | $215.78 - $246.99 |
| Q2 2019 | 145,599 | $34,051 | $230.90 | $219.20 - $245.35 |
| Q1 2019 | 119,733 | $28,302 | $314.89 | $216.12 - $344.00 |
| Q4 2018 | 104,389 | $31,413 | $319.14 | $278.46 - $358.41 |
| Q3 2018 | 100,873 | $35,639 | $344.30 | $288.13 - $388.67 |
| Q2 2018 | 102,624 | $29,786 | $281.15 | $249.17 - $310.91 |
| Q1 2018 | 121,720 | $33,329 | $310.41 | $259.76 - $370.57 |
| Q4 2017 | 139,331 | $44,387 | $320.80 | $301.81 - $348.84 |
| Q3 2017 | 135,083 | $42,297 | $296.11 | $269.50 - $330.00 |
| Q2 2017 | 150,199 | $40,758 | $264.42 | $244.28 - $291.90 |
| Q1 2017 | 157,807 | $43,148 | $282.75 | $260.50 - $301.42 |
| Q4 2016 | 182,558 | $51,770 | $296.43 | $268.00 - $329.83 |
| Q3 2016 | 158,799 | $49,709 | $296.18 | $240.07 - $333.65 |
| Q2 2016 | 192,777 | $46,617 | $263.54 | $223.02 - $292.69 |