Ticker: BIIB CUSIP: 09062X103 Class: COM
Note: Option positions (PUT/CALL) are excluded.
| Period | Shares | Value ($000) | Average Close | Price Range |
|---|---|---|---|---|
| Q4 2025 | 31 | $5 | $163.37 | $138.00 - $185.17 |
| Q3 2025 | 31 | $4 | $135.17 | $121.05 - $150.28 |
| Q2 2025 | 82 | $10 | $124.60 | $110.04 - $137.32 |
| Q1 2025 | 87 | $12 | $142.96 | $128.51 - $157.09 |
| Q3 2024 | 638 | $124 | $209.21 | $188.78 - $238.00 |
| Q2 2024 | 2,748 | $637 | $217.32 | $189.44 - $237.54 |
| Q1 2024 | 2,710 | $584 | $234.20 | $211.02 - $268.30 |
| Q4 2023 | 2,750 | $712 | $245.62 | $220.86 - $269.43 |
| Q3 2023 | 2,894 | $759 | $267.47 | $251.85 - $287.60 |
| Q2 2023 | 2,744 | $751 | $297.86 | $273.39 - $319.76 |
| Q1 2023 | 2,314 | $643 | $276.70 | $254.80 - $295.90 |
| Q4 2022 | 2,196 | $608 | $282.44 | $250.31 - $311.88 |
| Q3 2022 | 2,219 | $592 | $212.38 | $193.65 - $283.44 |
| Q2 2022 | 2,422 | $494 | $204.43 | $187.16 - $225.50 |
| Q1 2022 | 2,552 | $537 | $217.46 | $192.67 - $249.00 |
| Q4 2021 | 2,396 | $575 | $257.12 | $221.72 - $290.76 |
| Q3 2021 | 3,171 | $897 | $327.75 | $282.64 - $372.12 |
| Q2 2021 | 2,903 | $1,005 | $302.94 | $257.03 - $468.55 |
| Q1 2021 | 2,871 | $803 | $269.69 | $238.40 - $296.38 |
| Q4 2020 | 2,251 | $551 | $259.08 | $223.25 - $363.92 |
| Q3 2020 | 2,398 | $680 | $278.91 | $261.87 - $312.00 |
| Q2 2020 | 2,698 | $722 | $300.59 | $257.60 - $350.24 |
| Q1 2020 | 2,263 | $716 | $303.47 | $262.25 - $374.99 |
| Q4 2019 | 1,691 | $502 | $277.46 | $219.70 - $318.00 |
| Q3 2019 | 1,386 | $323 | $232.85 | $215.78 - $246.99 |
| Q2 2019 | 1,344 | $314 | $230.90 | $219.20 - $245.35 |
| Q1 2019 | 1,243 | $294 | $314.89 | $216.12 - $344.00 |
| Q4 2018 | 1,183 | $356 | $319.14 | $278.46 - $358.41 |
| Q3 2018 | 1,293 | $457 | $344.30 | $288.13 - $388.67 |
| Q2 2018 | 1,393 | $404 | $281.15 | $249.17 - $310.91 |
| Q1 2018 | 1,193 | $327 | $310.41 | $259.76 - $370.57 |
| Q4 2017 | 1,193 | $380 | $320.80 | $301.81 - $348.84 |
| Q3 2017 | 1,080 | $338 | $296.11 | $269.50 - $330.00 |
| Q2 2017 | 1,080 | $293 | $264.42 | $244.28 - $291.90 |
| Q1 2017 | 945 | $258 | $282.75 | $260.50 - $301.42 |
| Q4 2016 | 795 | $225 | $296.43 | $268.00 - $329.83 |
| Q3 2016 | 690 | $216 | $296.18 | $240.07 - $333.65 |
| Q4 2015 | 690 | $211 | $287.35 | $254.00 - $311.65 |
| Q3 2015 | 690 | $201 | $330.23 | $265.00 - $412.24 |
| Q2 2015 | 690 | $207 | $401.33 | $368.88 - $432.88 |
| Q1 2015 | 690 | $291 | $394.14 | $334.40 - $480.18 |
| Q4 2014 | 690 | $234 | $323.51 | $290.85 - $361.93 |
| Q3 2014 | 690 | $228 | $329.72 | $298.31 - $349.00 |
| Q2 2014 | 690 | $218 | $300.97 | $272.02 - $322.25 |
| Q1 2014 | 695 | $210 | $317.43 | $270.62 - $358.89 |