Ticker: BIIB CUSIP: 09062X103 Class: COM
Note: Option positions (PUT/CALL) are excluded.
| Period | Shares | Value ($000) | Average Close | Price Range |
|---|---|---|---|---|
| Q4 2025 | 1,720,595 | $302,815 | $163.37 | $138.00 - $185.17 |
| Q4 2021 | 313,782 | $75,279 | $257.12 | $221.72 - $290.76 |
| Q3 2021 | 332,589 | $94,126 | $327.75 | $282.64 - $372.12 |
| Q2 2021 | 321,083 | $111,195 | $302.94 | $257.03 - $468.55 |
| Q1 2021 | 306,036 | $85,588 | $269.69 | $238.40 - $296.38 |
| Q4 2020 | 292,815 | $71,699 | $259.08 | $223.25 - $363.92 |
| Q3 2020 | 291,865 | $82,796 | $278.91 | $261.87 - $312.00 |
| Q2 2020 | 304,774 | $81,537 | $300.59 | $257.60 - $350.24 |
| Q1 2020 | 339,414 | $107,326 | $303.47 | $262.25 - $374.99 |
| Q4 2019 | 1,401,256 | $415,765 | $277.46 | $219.70 - $318.00 |
| Q3 2019 | 1,512,448 | $352,875 | $232.85 | $215.78 - $246.99 |
| Q2 2019 | 1,569,859 | $367,141 | $230.90 | $219.20 - $245.35 |
| Q1 2019 | 922,718 | $218,113 | $314.89 | $216.12 - $344.00 |
| Q4 2018 | 176,007 | $52,964 | $319.14 | $278.46 - $358.41 |
| Q3 2018 | 172,087 | $60,800 | $344.30 | $288.13 - $388.67 |
| Q2 2018 | 262,127 | $76,080 | $281.15 | $249.17 - $310.91 |