Ticker: BIIB CUSIP: 09062X103 Class: COM
Note: Option positions (PUT/CALL) are excluded.
| Period | Shares | Value ($000) | Average Close | Price Range |
|---|---|---|---|---|
| Q3 2025 | 2,017 | $0 | $135.17 | $121.05 - $150.28 |
| Q2 2025 | 1,971 | $0 | $124.60 | $110.04 - $137.32 |
| Q1 2025 | 1,535 | $0 | $142.96 | $128.51 - $157.09 |
| Q3 2024 | 1,103 | $0 | $209.21 | $188.78 - $238.00 |
| Q2 2024 | 1,441 | $0 | $217.32 | $189.44 - $237.54 |
| Q1 2024 | 1,730 | $0 | $234.20 | $211.02 - $268.30 |
| Q4 2023 | 1,545 | $0 | $245.62 | $220.86 - $269.43 |
| Q3 2023 | 1,592 | $0 | $267.47 | $251.85 - $287.60 |
| Q2 2023 | 1,576 | $0 | $297.86 | $273.39 - $319.76 |
| Q1 2023 | 1,976 | $1 | $276.70 | $254.80 - $295.90 |
| Q4 2022 | 1,909 | $1 | $282.44 | $250.31 - $311.88 |
| Q3 2022 | 1,962 | $524 | $212.38 | $193.65 - $283.44 |
| Q2 2022 | 2,036 | $415 | $204.43 | $187.16 - $225.50 |
| Q1 2022 | 1,832 | $386 | $217.46 | $192.67 - $249.00 |
| Q4 2021 | 2,527 | $606 | $257.12 | $221.72 - $290.76 |
| Q3 2021 | 2,414 | $683 | $327.75 | $282.64 - $372.12 |
| Q2 2021 | 2,338 | $810 | $302.94 | $257.03 - $468.55 |
| Q1 2021 | 2,658 | $744 | $269.69 | $238.40 - $296.38 |
| Q4 2020 | 1,736 | $425 | $259.08 | $223.25 - $363.92 |
| Q3 2020 | 2,071 | $588 | $278.91 | $261.87 - $312.00 |
| Q2 2020 | 2,101 | $562 | $300.59 | $257.60 - $350.24 |
| Q1 2020 | 2,362 | $747 | $303.47 | $262.25 - $374.99 |
| Q4 2019 | 2,340 | $694 | $277.46 | $219.70 - $318.00 |
| Q3 2019 | 2,519 | $586 | $232.85 | $215.78 - $246.99 |
| Q2 2019 | 2,243 | $525 | $230.90 | $219.20 - $245.35 |
| Q1 2019 | 3,036 | $718 | $314.89 | $216.12 - $344.00 |
| Q4 2018 | 3,930 | $1,183 | $319.14 | $278.46 - $358.41 |
| Q3 2018 | 4,019 | $1,420 | $344.30 | $288.13 - $388.67 |
| Q2 2018 | 3,801 | $1,103 | $281.15 | $249.17 - $310.91 |
| Q1 2018 | 3,438 | $941 | $310.41 | $259.76 - $370.57 |
| Q4 2017 | 3,640 | $1,160 | $320.80 | $301.81 - $348.84 |
| Q3 2017 | 3,496 | $1,095 | $296.11 | $269.50 - $330.00 |
| Q2 2017 | 3,495 | $948 | $264.42 | $244.28 - $291.90 |
| Q1 2017 | 3,592 | $982 | $282.75 | $260.50 - $301.42 |
| Q4 2016 | 3,764 | $1,067 | $296.43 | $268.00 - $329.83 |
| Q3 2016 | 4,213 | $1,319 | $296.18 | $240.07 - $333.65 |
| Q2 2016 | 4,240 | $1,025 | $263.54 | $223.02 - $292.69 |
| Q1 2016 | 4,760 | $1,239 | $264.15 | $242.07 - $301.02 |
| Q4 2015 | 3,299 | $1,011 | $287.35 | $254.00 - $311.65 |
| Q3 2015 | 4,080 | $1,191 | $330.23 | $265.00 - $412.24 |
| Q2 2015 | 3,367 | $1,360 | $401.33 | $368.88 - $432.88 |
| Q1 2015 | 2,829 | $1,195 | $394.14 | $334.40 - $480.18 |
| Q4 2014 | 1,556 | $528 | $323.51 | $290.85 - $361.93 |
| Q3 2014 | 1,421 | $470 | $329.72 | $298.31 - $349.00 |
| Q2 2014 | 1,021 | $322 | $300.97 | $272.02 - $322.25 |
| Q1 2014 | 910 | $278 | $317.43 | $270.62 - $358.89 |
| Q4 2013 | 839 | $235 | $258.65 | $221.07 - $298.82 |
| Q3 2013 | 839 | $202 | $223.81 | $203.55 - $248.95 |