Ticker: BIIB CUSIP: 09062X103 Class: COM
Note: Option positions (PUT/CALL) are excluded.
| Period | Shares | Value ($000) | Average Close | Price Range |
|---|---|---|---|---|
| Q4 2025 | 226,845 | $39,922 | $163.37 | $138.00 - $185.17 |
| Q3 2022 | 21,074 | $5,629 | $212.38 | $193.65 - $283.44 |
| Q2 2020 | 21,186 | $5,684 | $300.59 | $257.60 - $350.24 |
| Q1 2020 | 44,272 | $14,024 | $303.47 | $262.25 - $374.99 |
| Q4 2019 | 50,133 | $14,863 | $277.46 | $219.70 - $318.00 |
| Q3 2019 | 83,496 | $19,413 | $232.85 | $215.78 - $246.99 |
| Q2 2019 | 79,661 | $18,597 | $230.90 | $219.20 - $245.35 |
| Q1 2019 | 61,760 | $14,608 | $314.89 | $216.12 - $344.00 |
| Q4 2018 | 37,299 | $11,222 | $319.14 | $278.46 - $358.41 |
| Q3 2018 | 48,967 | $17,303 | $344.30 | $288.13 - $388.67 |
| Q2 2018 | 19,723 | $5,725 | $281.15 | $249.17 - $310.91 |
| Q1 2018 | 19,325 | $5,291 | $310.41 | $259.76 - $370.57 |
| Q4 2017 | 24,847 | $7,917 | $320.80 | $301.81 - $348.84 |
| Q3 2017 | 73,990 | $23,154 | $296.11 | $269.50 - $330.00 |
| Q2 2017 | 14,339 | $3,890 | $264.42 | $244.28 - $291.90 |
| Q1 2017 | 12,999 | $3,555 | $282.75 | $260.50 - $301.42 |
| Q4 2016 | 40,999 | $11,633 | $296.43 | $268.00 - $329.83 |
| Q3 2016 | 20,004 | $6,262 | $296.18 | $240.07 - $333.65 |
| Q2 2016 | 55,166 | $13,342 | $263.54 | $223.02 - $292.69 |
| Q1 2016 | 18,151 | $4,726 | $264.15 | $242.07 - $301.02 |
| Q4 2015 | 26,307 | $8,058 | $287.35 | $254.00 - $311.65 |
| Q1 2015 | 18,388 | $7,769 | $394.14 | $334.40 - $480.18 |
| Q4 2014 | 18,500 | $6,285 | $323.51 | $290.85 - $361.93 |
| Q3 2014 | 18,800 | $6,219 | $329.72 | $298.31 - $349.00 |