Ticker: BIIB CUSIP: 09062X103 Class: COM
Note: Option positions (PUT/CALL) are excluded.
| Period | Shares | Value ($000) | Average Close | Price Range |
|---|---|---|---|---|
| Q4 2025 | 1,024,268 | $180,261 | $163.37 | $138.00 - $185.17 |
| Q3 2025 | 845,277 | $118,406 | $135.17 | $121.05 - $150.28 |
| Q2 2025 | 508,773 | $63,897 | $124.60 | $110.04 - $137.32 |
| Q2 2024 | 401,005 | $92,961 | $217.32 | $189.44 - $237.54 |
| Q1 2024 | 166,693 | $35,944 | $234.20 | $211.02 - $268.30 |
| Q4 2023 | 422,680 | $109,377 | $245.62 | $220.86 - $269.43 |
| Q3 2023 | 442,076 | $113,618 | $267.47 | $251.85 - $287.60 |
| Q2 2023 | 367,268 | $104,616 | $297.86 | $273.39 - $319.76 |
| Q4 2022 | 25,064 | $6,941 | $282.44 | $250.31 - $311.88 |
| Q2 2021 | 65,367 | $22,635 | $302.94 | $257.03 - $468.55 |
| Q2 2017 | 149,507 | $40,570 | $264.42 | $244.28 - $291.90 |
| Q3 2016 | 149,217 | $46,709 | $296.18 | $240.07 - $333.65 |
| Q1 2016 | 23,381 | $6,087 | $264.15 | $242.07 - $301.02 |
| Q4 2015 | 5,835 | $1,788 | $287.35 | $254.00 - $311.65 |
| Q2 2015 | 7,500 | $3,030 | $401.33 | $368.88 - $432.88 |
| Q2 2013 | 35,000 | $7,532 | $213.68 | $191.80 - $242.64 |