Ticker: BIIB CUSIP: 09062X103 Class: COM
Note: Option positions (PUT/CALL) are excluded.
| Period | Shares | Value ($000) | Average Close | Price Range |
|---|---|---|---|---|
| Q4 2025 | 1,797 | $316 | $163.37 | $138.00 - $185.17 |
| Q3 2025 | 1,997 | $280 | $135.17 | $121.05 - $150.28 |
| Q2 2025 | 1,791 | $225 | $124.60 | $110.04 - $137.32 |
| Q4 2024 | 1,545 | $236 | $168.67 | $145.07 - $195.00 |
| Q2 2024 | 1,033 | $239 | $217.32 | $189.44 - $237.54 |
| Q3 2022 | 1,015 | $271 | $212.38 | $193.65 - $283.44 |
| Q2 2022 | 1,015 | $207 | $204.43 | $187.16 - $225.50 |
| Q1 2022 | 1,961 | $413 | $217.46 | $192.67 - $249.00 |
| Q4 2021 | 3,499 | $819 | $257.12 | $221.72 - $290.76 |
| Q3 2021 | 31,151 | $8,816 | $327.75 | $282.64 - $372.12 |
| Q2 2021 | 29,317 | $10,151 | $302.94 | $257.03 - $468.55 |
| Q1 2021 | 29,707 | $8,310 | $269.69 | $238.40 - $296.38 |
| Q4 2020 | 29,804 | $7,298 | $259.08 | $223.25 - $363.92 |
| Q3 2020 | 30,499 | $8,644 | $278.91 | $261.87 - $312.00 |
| Q2 2020 | 29,595 | $7,918 | $300.59 | $257.60 - $350.24 |
| Q1 2020 | 30,105 | $9,525 | $303.47 | $262.25 - $374.99 |
| Q4 2019 | 31,713 | $9,410 | $277.46 | $219.70 - $318.00 |
| Q3 2019 | 22,559 | $5,252 | $232.85 | $215.78 - $246.99 |
| Q2 2019 | 22,994 | $5,378 | $230.90 | $219.20 - $245.35 |
| Q1 2019 | 23,812 | $5,629 | $314.89 | $216.12 - $344.00 |
| Q4 2018 | 23,164 | $6,971 | $319.14 | $278.46 - $358.41 |
| Q3 2018 | 23,121 | $8,168 | $344.30 | $288.13 - $388.67 |
| Q2 2018 | 23,287 | $6,759 | $281.15 | $249.17 - $310.91 |
| Q1 2018 | 359 | $98 | $310.41 | $259.76 - $370.57 |
| Q4 2017 | 231 | $74 | $320.80 | $301.81 - $348.84 |
| Q3 2017 | 231 | $72 | $296.11 | $269.50 - $330.00 |
| Q4 2016 | 23 | $7 | $296.43 | $268.00 - $329.83 |
| Q3 2016 | 23 | $7 | $296.18 | $240.07 - $333.65 |
| Q2 2016 | 23 | $6 | $263.54 | $223.02 - $292.69 |
| Q1 2016 | 98 | $26 | $264.15 | $242.07 - $301.02 |
| Q4 2015 | 98 | $30 | $287.35 | $254.00 - $311.65 |