Ticker: BIIB CUSIP: 09062X103 Class: COM
Note: Option positions (PUT/CALL) are excluded.
| Period | Shares | Value ($000) | Average Close | Price Range |
|---|---|---|---|---|
| Q4 2025 | 1,499 | $264 | $163.37 | $138.00 - $185.17 |
| Q4 2024 | 1,335 | $204 | $168.67 | $145.07 - $195.00 |
| Q3 2024 | 1,120 | $217 | $209.21 | $188.78 - $238.00 |
| Q2 2024 | 1,130 | $262 | $217.32 | $189.44 - $237.54 |
| Q1 2024 | 1,015 | $219 | $234.20 | $211.02 - $268.30 |
| Q4 2023 | 942 | $244 | $245.62 | $220.86 - $269.43 |
| Q3 2023 | 811 | $208 | $267.47 | $251.85 - $287.60 |
| Q2 2021 | 635 | $220 | $302.94 | $257.03 - $468.55 |
| Q1 2021 | 730 | $205 | $269.69 | $238.40 - $296.38 |
| Q3 2020 | 888 | $252 | $278.91 | $261.87 - $312.00 |
| Q2 2020 | 803 | $214 | $300.59 | $257.60 - $350.24 |
| Q4 2019 | 913 | $273 | $277.46 | $219.70 - $318.00 |
| Q3 2019 | 1,183 | $275 | $232.85 | $215.78 - $246.99 |
| Q2 2019 | 1,078 | $252 | $230.90 | $219.20 - $245.35 |
| Q1 2019 | 1,078 | $255 | $314.89 | $216.12 - $344.00 |
| Q4 2018 | 883 | $266 | $319.14 | $278.46 - $358.41 |
| Q3 2018 | 808 | $286 | $344.30 | $288.13 - $388.67 |
| Q2 2018 | 787 | $229 | $281.15 | $249.17 - $310.91 |
| Q1 2018 | 750 | $205 | $310.41 | $259.76 - $370.57 |
| Q4 2017 | 740 | $236 | $320.80 | $301.81 - $348.84 |
| Q3 2017 | 725 | $228 | $296.11 | $269.50 - $330.00 |
| Q4 2016 | 825 | $235 | $296.43 | $268.00 - $329.83 |
| Q3 2016 | 825 | $259 | $296.18 | $240.07 - $333.65 |
| Q2 2016 | 1,000 | $242 | $263.54 | $223.02 - $292.69 |
| Q4 2015 | 715 | $218 | $287.35 | $254.00 - $311.65 |
| Q3 2015 | 715 | $211 | $330.23 | $265.00 - $412.24 |
| Q2 2015 | 758 | $306 | $401.33 | $368.88 - $432.88 |
| Q1 2015 | 755 | $318 | $394.14 | $334.40 - $480.18 |
| Q4 2014 | 640 | $217 | $323.51 | $290.85 - $361.93 |
| Q3 2014 | 690 | $229 | $329.72 | $298.31 - $349.00 |
| Q2 2014 | 690 | $217 | $300.97 | $272.02 - $322.25 |
| Q1 2014 | 690 | $211 | $317.43 | $270.62 - $358.89 |