Ticker: BIIB CUSIP: 09062X103 Class: COM
Note: Option positions (PUT/CALL) are excluded.
| Period | Shares | Value ($000) | Average Close | Price Range |
|---|---|---|---|---|
| Q4 2025 | 146,408 | $25,766 | $163.37 | $138.00 - $185.17 |
| Q3 2025 | 7,628 | $1,069 | $135.17 | $121.05 - $150.28 |
| Q2 2025 | 37,161 | $4,667 | $124.60 | $110.04 - $137.32 |
| Q1 2025 | 415,510 | $56,858 | $142.96 | $128.51 - $157.09 |
| Q4 2024 | 371,201 | $56,764 | $168.67 | $145.07 - $195.00 |
| Q3 2024 | 230,648 | $44,709 | $209.21 | $188.78 - $238.00 |
| Q2 2024 | 3,945 | $915 | $217.32 | $189.44 - $237.54 |
| Q1 2024 | 314,709 | $67,861 | $234.20 | $211.02 - $268.30 |
| Q4 2023 | 90,302 | $23,367 | $245.62 | $220.86 - $269.43 |
| Q3 2023 | 32,788 | $8,427 | $267.47 | $251.85 - $287.60 |
| Q2 2023 | 5,547 | $1,580 | $297.86 | $273.39 - $319.76 |
| Q4 2022 | 138,293 | $38,296 | $282.44 | $250.31 - $311.88 |
| Q3 2022 | 163,775 | $43,728 | $212.38 | $193.65 - $283.44 |
| Q2 2022 | 85,297 | $17,395 | $204.43 | $187.16 - $225.50 |
| Q1 2022 | 256,643 | $54,049 | $217.46 | $192.67 - $249.00 |
| Q4 2021 | 4,172 | $1,001 | $257.12 | $221.72 - $290.76 |
| Q3 2021 | 25,076 | $7,096 | $327.75 | $282.64 - $372.12 |
| Q2 2021 | 21,693 | $7,512 | $302.94 | $257.03 - $468.55 |
| Q4 2020 | 4,047 | $991 | $259.08 | $223.25 - $363.92 |
| Q2 2020 | 137,625 | $36,822 | $300.59 | $257.60 - $350.24 |
| Q1 2020 | 1,400 | $443 | $303.47 | $262.25 - $374.99 |
| Q3 2019 | 47,194 | $10,988 | $232.85 | $215.78 - $246.99 |
| Q2 2019 | 40,368 | $9,441 | $230.90 | $219.20 - $245.35 |
| Q1 2019 | 60,142 | $14,216 | $314.89 | $216.12 - $344.00 |
| Q4 2018 | 14,665 | $4,413 | $319.14 | $278.46 - $358.41 |
| Q3 2018 | 18,358 | $6,486 | $344.30 | $288.13 - $388.67 |
| Q2 2018 | 27,868 | $8,088 | $281.15 | $249.17 - $310.91 |
| Q1 2018 | 19,046 | $5,215 | $310.41 | $259.76 - $370.57 |
| Q4 2017 | 3,632 | $1,157 | $320.80 | $301.81 - $348.84 |
| Q3 2017 | 8,001 | $2,505 | $296.11 | $269.50 - $330.00 |
| Q1 2017 | 4,258 | $1,164 | $282.75 | $260.50 - $301.42 |
| Q4 2016 | 26,211 | $7,433 | $296.43 | $268.00 - $329.83 |
| Q1 2016 | 7,461 | $1,942 | $264.15 | $242.07 - $301.02 |
| Q1 2015 | 2,842 | $1,200 | $394.14 | $334.40 - $480.18 |