Ticker: BIIB CUSIP: 09062X103 Class: COM
Note: Option positions (PUT/CALL) are excluded.
| Period | Shares | Value ($000) | Average Close | Price Range |
|---|---|---|---|---|
| Q4 2025 | 175 | $31 | $163.37 | $138.00 - $185.17 |
| Q3 2025 | 155 | $22 | $135.17 | $121.05 - $150.28 |
| Q2 2025 | 166 | $21 | $124.60 | $110.04 - $137.32 |
| Q1 2025 | 229 | $31 | $142.96 | $128.51 - $157.09 |
| Q4 2024 | 131 | $20 | $168.67 | $145.07 - $195.00 |
| Q3 2024 | 251 | $49 | $209.21 | $188.78 - $238.00 |
| Q2 2024 | 477 | $111 | $217.32 | $189.44 - $237.54 |
| Q1 2024 | 958 | $207 | $234.20 | $211.02 - $268.30 |
| Q4 2023 | 559 | $145 | $245.62 | $220.86 - $269.43 |
| Q3 2023 | 594 | $153 | $267.47 | $251.85 - $287.60 |
| Q2 2023 | 559 | $159 | $297.86 | $273.39 - $319.76 |
| Q1 2023 | 523 | $145 | $276.70 | $254.80 - $295.90 |
| Q4 2022 | 461 | $0 | $282.44 | $250.31 - $311.88 |
| Q3 2022 | 476 | $127 | $212.38 | $193.65 - $283.44 |
| Q2 2022 | 483 | $99 | $204.43 | $187.16 - $225.50 |
| Q4 2021 | 1,232 | $296 | $257.12 | $221.72 - $290.76 |
| Q3 2021 | 1,323 | $374 | $327.75 | $282.64 - $372.12 |
| Q2 2021 | 1,358 | $470 | $302.94 | $257.03 - $468.55 |
| Q1 2021 | 1,660 | $464 | $269.69 | $238.40 - $296.38 |
| Q4 2020 | 1,701 | $416 | $259.08 | $223.25 - $363.92 |
| Q3 2020 | 1,910 | $541 | $278.91 | $261.87 - $312.00 |
| Q1 2020 | 664 | $210 | $303.47 | $262.25 - $374.99 |
| Q1 2019 | 1,584 | $374 | $314.89 | $216.12 - $344.00 |
| Q4 2018 | 1,453 | $437 | $319.14 | $278.46 - $358.41 |
| Q3 2018 | 1,514 | $534 | $344.30 | $288.13 - $388.67 |
| Q2 2018 | 1,462 | $424 | $281.15 | $249.17 - $310.91 |
| Q1 2018 | 1,405 | $384 | $310.41 | $259.76 - $370.57 |
| Q4 2017 | 1,299 | $413 | $320.80 | $301.81 - $348.84 |
| Q3 2017 | 795 | $248 | $296.11 | $269.50 - $330.00 |
| Q2 2017 | 764 | $207 | $264.42 | $244.28 - $291.90 |
| Q3 2014 | 497 | $164 | $329.72 | $298.31 - $349.00 |
| Q2 2014 | 474 | $149 | $300.97 | $272.02 - $322.25 |
| Q1 2014 | 458 | $140 | $317.43 | $270.62 - $358.89 |
| Q4 2013 | 388 | $108 | $258.65 | $221.07 - $298.82 |
| Q3 2013 | 389 | $94 | $223.81 | $203.55 - $248.95 |
| Q2 2013 | 380 | $82 | $213.68 | $191.80 - $242.64 |
| Q1 2013 | 380 | $82 | $161.63 | $139.72 - $192.92 |