Ticker: BIIB CUSIP: 09062X103 Class: COM
Note: Option positions (PUT/CALL) are excluded.
| Period | Shares | Value ($000) | Average Close | Price Range |
|---|---|---|---|---|
| Q3 2025 | 47,727 | $6,686 | $135.17 | $121.05 - $150.28 |
| Q2 2025 | 117,694 | $14,781 | $124.60 | $110.04 - $137.32 |
| Q1 2025 | 213,015 | $29,149 | $142.96 | $128.51 - $157.09 |
| Q4 2024 | 240,343 | $36,753 | $168.67 | $145.07 - $195.00 |
| Q3 2024 | 185,937 | $36,042 | $209.21 | $188.78 - $238.00 |
| Q2 2024 | 93,224 | $21,611 | $217.32 | $189.44 - $237.54 |
| Q1 2024 | 147,430 | $31,790 | $234.20 | $211.02 - $268.30 |
| Q4 2022 | 17,431 | $4,827 | $282.44 | $250.31 - $311.88 |
| Q3 2022 | 31,923 | $8,523,441 | $212.38 | $193.65 - $283.44 |
| Q4 2021 | 23,743 | $5,696,420 | $257.12 | $221.72 - $290.76 |
| Q3 2021 | 20,022 | $5,666,025 | $327.75 | $282.64 - $372.12 |
| Q3 2020 | 55,464 | $15,734,027 | $278.91 | $261.87 - $312.00 |
| Q2 2020 | 105,703 | $28,280,837 | $300.59 | $257.60 - $350.24 |
| Q1 2020 | 89,000 | $28,158 | $303.47 | $262.25 - $374.99 |
| Q4 2019 | 110,091 | $32,667 | $277.46 | $219.70 - $318.00 |
| Q3 2019 | 86,487 | $20,136 | $232.85 | $215.78 - $246.99 |
| Q2 2019 | 79,193 | $18,521 | $230.90 | $219.20 - $245.35 |
| Q1 2019 | 44,645 | $10,553 | $314.89 | $216.12 - $344.00 |
| Q4 2018 | 7,327 | $2,205 | $319.14 | $278.46 - $358.41 |
| Q2 2018 | 105,767 | $30,698 | $281.15 | $249.17 - $310.91 |
| Q1 2018 | 28,865 | $7,904 | $310.41 | $259.76 - $370.57 |
| Q2 2017 | 39,350 | $10,678 | $264.42 | $244.28 - $291.90 |
| Q1 2017 | 95,915 | $26,225 | $282.75 | $260.50 - $301.42 |
| Q4 2016 | 82,219 | $23,316 | $296.43 | $268.00 - $329.83 |
| Q2 2016 | 48,664 | $11,768 | $263.54 | $223.02 - $292.69 |
| Q3 2015 | 57,636 | $16,819 | $330.23 | $265.00 - $412.24 |
| Q2 2015 | 19,164 | $7,741 | $401.33 | $368.88 - $432.88 |
| Q4 2014 | 27,543 | $9,349 | $323.51 | $290.85 - $361.93 |
| Q3 2014 | 41,766 | $13,817 | $329.72 | $298.31 - $349.00 |
| Q1 2014 | 800 | $245 | $317.43 | $270.62 - $358.89 |
| Q2 2013 | 97,336 | $20,947 | $213.68 | $191.80 - $242.64 |