Ticker: BIIB CUSIP: 09062X103 Class: COM
Note: Option positions (PUT/CALL) are excluded.
| Period | Shares | Value ($000) | Average Close | Price Range |
|---|---|---|---|---|
| Q2 2025 | 6,000 | $754 | $124.60 | $110.04 - $137.32 |
| Q1 2025 | 105,851 | $14,485 | $142.96 | $128.51 - $157.09 |
| Q4 2024 | 22,003 | $3,365 | $168.67 | $145.07 - $195.00 |
| Q3 2024 | 53,711 | $10,411 | $209.21 | $188.78 - $238.00 |
| Q2 2024 | 8,668 | $2,009 | $217.32 | $189.44 - $237.54 |
| Q1 2024 | 45,042 | $9,712 | $234.20 | $211.02 - $268.30 |
| Q4 2022 | 4,995 | $1 | $282.44 | $250.31 - $311.88 |
| Q3 2022 | 9,543 | $2,548 | $212.38 | $193.65 - $283.44 |
| Q2 2022 | 1,733 | $353 | $204.43 | $187.16 - $225.50 |
| Q1 2022 | 4,992 | $1,051 | $217.46 | $192.67 - $249.00 |
| Q3 2021 | 8,595 | $2,432 | $327.75 | $282.64 - $372.12 |
| Q2 2021 | 3,989 | $1,381 | $302.94 | $257.03 - $468.55 |
| Q4 2020 | 3,438 | $842 | $259.08 | $223.25 - $363.92 |
| Q2 2020 | 4,820 | $1,290 | $300.59 | $257.60 - $350.24 |
| Q1 2020 | 4,338 | $1,372 | $303.47 | $262.25 - $374.99 |
| Q4 2019 | 3,748 | $1,112 | $277.46 | $219.70 - $318.00 |
| Q3 2019 | 52,679 | $12,265 | $232.85 | $215.78 - $246.99 |
| Q2 2019 | 33,437 | $7,820 | $230.90 | $219.20 - $245.35 |
| Q1 2019 | 40,311 | $9,529 | $314.89 | $216.12 - $344.00 |
| Q4 2018 | 24,710 | $7,436 | $319.14 | $278.46 - $358.41 |
| Q3 2018 | 18,462 | $6,523 | $344.30 | $288.13 - $388.67 |
| Q2 2018 | 7,591 | $2,203 | $281.15 | $249.17 - $310.91 |
| Q1 2018 | 5,638 | $1,544 | $310.41 | $259.76 - $370.57 |
| Q4 2017 | 3,354 | $1,068 | $320.80 | $301.81 - $348.84 |
| Q1 2017 | 1,752 | $479 | $282.75 | $260.50 - $301.42 |
| Q4 2016 | 7,815 | $2,216 | $296.43 | $268.00 - $329.83 |
| Q3 2016 | 125,668 | $39,338 | $296.18 | $240.07 - $333.65 |
| Q2 2016 | 18,123 | $4,383 | $263.54 | $223.02 - $292.69 |
| Q1 2016 | 1,000 | $260 | $264.15 | $242.07 - $301.02 |
| Q4 2015 | 4,368 | $1,338 | $287.35 | $254.00 - $311.65 |
| Q2 2015 | 600 | $242 | $401.33 | $368.88 - $432.88 |
| Q1 2015 | 4,880 | $2,061 | $394.14 | $334.40 - $480.18 |
| Q4 2014 | 27,786 | $9,432 | $323.51 | $290.85 - $361.93 |
| Q3 2014 | 3,061 | $1,013 | $329.72 | $298.31 - $349.00 |
| Q2 2014 | 899 | $283 | $300.97 | $272.02 - $322.25 |
| Q1 2014 | 3,299 | $1,009 | $317.43 | $270.62 - $358.89 |
| Q4 2013 | 1,767 | $494 | $258.65 | $221.07 - $298.82 |
| Q3 2013 | 1,500 | $361 | $223.81 | $203.55 - $248.95 |
| Q2 2013 | 3,800 | $818 | $213.68 | $191.80 - $242.64 |