Ticker: BIIB CUSIP: 09062X103 Class: COM
Note: Option positions (PUT/CALL) are excluded.
| Period | Shares | Value ($000) | Average Close | Price Range |
|---|---|---|---|---|
| Q4 2025 | 1,268 | $223 | $163.37 | $138.00 - $185.17 |
| Q2 2025 | 9,594 | $1,205 | $124.60 | $110.04 - $137.32 |
| Q2 2023 | 769 | $219 | $297.86 | $273.39 - $319.76 |
| Q1 2023 | 744 | $207 | $276.70 | $254.80 - $295.90 |
| Q4 2022 | 744 | $206 | $282.44 | $250.31 - $311.88 |
| Q3 2021 | 744 | $211 | $327.75 | $282.64 - $372.12 |
| Q2 2021 | 786 | $272 | $302.94 | $257.03 - $468.55 |
| Q1 2021 | 1,009 | $282 | $269.69 | $238.40 - $296.38 |
| Q4 2020 | 1,016 | $249 | $259.08 | $223.25 - $363.92 |
| Q3 2020 | 1,016 | $288 | $278.91 | $261.87 - $312.00 |
| Q2 2020 | 4,023 | $1,076 | $300.59 | $257.60 - $350.24 |
| Q2 2015 | 623 | $252 | $401.33 | $368.88 - $432.88 |