Ticker: BIIB CUSIP: 09062X103 Class: COM
Note: Option positions (PUT/CALL) are excluded.
| Period | Shares | Value ($000) | Average Close | Price Range |
|---|---|---|---|---|
| Q4 2025 | 6,912 | $1,216 | $163.37 | $138.00 - $185.17 |
| Q3 2025 | 6,996 | $980 | $135.17 | $121.05 - $150.28 |
| Q2 2025 | 7,028 | $883 | $124.60 | $110.04 - $137.32 |
| Q1 2025 | 4,713 | $645 | $142.96 | $128.51 - $157.09 |
| Q4 2024 | 2,894 | $443 | $168.67 | $145.07 - $195.00 |
| Q3 2024 | 4,222 | $818 | $209.21 | $188.78 - $238.00 |
| Q2 2024 | 4,352 | $1,009 | $217.32 | $189.44 - $237.54 |
| Q1 2024 | 4,501 | $971 | $234.20 | $211.02 - $268.30 |
| Q4 2023 | 4,404 | $1,140 | $245.62 | $220.86 - $269.43 |
| Q3 2023 | 4,594 | $1,181 | $267.47 | $251.85 - $287.60 |
| Q2 2023 | 4,725 | $1,346 | $297.86 | $273.39 - $319.76 |
| Q1 2023 | 4,885 | $1,358 | $276.70 | $254.80 - $295.90 |
| Q4 2022 | 4,861 | $1,346 | $282.44 | $250.31 - $311.88 |
| Q3 2022 | 4,681 | $1,250 | $212.38 | $193.65 - $283.44 |
| Q2 2022 | 4,674 | $953 | $204.43 | $187.16 - $225.50 |
| Q4 2019 | 2,713 | $805 | $277.46 | $219.70 - $318.00 |
| Q3 2019 | 2,915 | $679 | $232.85 | $215.78 - $246.99 |
| Q2 2019 | 2,990 | $699 | $230.90 | $219.20 - $245.35 |
| Q1 2019 | 3,092 | $731 | $314.89 | $216.12 - $344.00 |
| Q4 2018 | 3,262 | $982 | $319.14 | $278.46 - $358.41 |
| Q3 2018 | 3,248 | $1,148 | $344.30 | $288.13 - $388.67 |
| Q2 2018 | 4,596 | $1,334 | $281.15 | $249.17 - $310.91 |
| Q1 2018 | 4,549 | $1,246 | $310.41 | $259.76 - $370.57 |
| Q4 2017 | 4,605 | $1,467 | $320.80 | $301.81 - $348.84 |
| Q3 2017 | 5,344 | $1,673 | $296.11 | $269.50 - $330.00 |
| Q2 2017 | 5,588 | $1,516 | $264.42 | $244.28 - $291.90 |
| Q1 2017 | 5,690 | $1,556 | $282.75 | $260.50 - $301.42 |
| Q4 2016 | 5,570 | $1,580 | $296.43 | $268.00 - $329.83 |
| Q3 2016 | 5,463 | $1,710 | $296.18 | $240.07 - $333.65 |
| Q2 2016 | 5,541 | $1,340 | $263.54 | $223.02 - $292.69 |
| Q1 2016 | 5,391 | $1,403 | $264.15 | $242.07 - $301.02 |
| Q4 2015 | 3,621 | $1,109 | $287.35 | $254.00 - $311.65 |
| Q3 2015 | 2,231 | $651 | $330.23 | $265.00 - $412.24 |