Ticker: BIIB CUSIP: 09062X103 Class: COM
Note: Option positions (PUT/CALL) are excluded.
| Period | Shares | Value ($000) | Average Close | Price Range |
|---|---|---|---|---|
| Q4 2025 | 572,429 | $100,742 | $163.37 | $138.00 - $185.17 |
| Q3 2025 | 618,309 | $95,251 | $135.17 | $121.05 - $150.28 |
| Q2 2025 | 579,797 | $77,223 | $124.60 | $110.04 - $137.32 |
| Q1 2025 | 1,315,947 | $172,007 | $142.96 | $128.51 - $157.09 |
| Q4 2024 | 1,216,990 | $183,461 | $168.67 | $145.07 - $195.00 |
| Q3 2024 | 897,512 | $163,616 | $209.21 | $188.78 - $238.00 |
| Q2 2024 | 684,820 | $153,817 | $217.32 | $189.44 - $237.54 |
| Q1 2024 | 985,802 | $187,815 | $234.20 | $211.02 - $268.30 |
| Q4 2023 | 1,201,706 | $307,444 | $245.62 | $220.86 - $269.43 |
| Q3 2023 | 1,093,524 | $286,788 | $267.47 | $251.85 - $287.60 |
| Q2 2023 | 1,187,313 | $338,907 | $297.86 | $273.39 - $319.76 |
| Q1 2023 | 578,293 | $164,229 | $276.70 | $254.80 - $295.90 |
| Q4 2022 | 818,633 | $233,335 | $282.44 | $250.31 - $311.88 |
| Q3 2022 | 648,896 | $169,810 | $212.38 | $193.65 - $283.44 |
| Q2 2022 | 407,835 | $87,385 | $204.43 | $187.16 - $225.50 |
| Q1 2022 | 347,256 | $73,494 | $217.46 | $192.67 - $249.00 |
| Q4 2021 | 803,594 | $190,186 | $257.12 | $221.72 - $290.76 |
| Q3 2021 | 855,003 | $241,957 | $327.75 | $282.64 - $372.12 |
| Q2 2021 | 619,698 | $214,583 | $302.94 | $257.03 - $468.55 |