Ticker: BIIB CUSIP: 09062X103 Class: COM
Note: Option positions (PUT/CALL) are excluded.
| Period | Shares | Value ($000) | Average Close | Price Range |
|---|---|---|---|---|
| Q4 2025 | 129,780 | $22,840 | $163.37 | $138.00 - $185.17 |
| Q3 2025 | 120,620 | $16,896 | $135.17 | $121.05 - $150.28 |
| Q2 2025 | 117,655 | $14,776 | $124.60 | $110.04 - $137.32 |
| Q1 2025 | 115,610 | $15,820 | $142.96 | $128.51 - $157.09 |
| Q4 2024 | 119,582 | $18,286 | $168.67 | $145.07 - $195.00 |
| Q3 2024 | 132,912 | $25,764 | $209.21 | $188.78 - $238.00 |
| Q2 2024 | 112,672 | $26,120 | $217.32 | $189.44 - $237.54 |
| Q1 2024 | 105,307 | $22,707 | $234.20 | $211.02 - $268.30 |
| Q4 2023 | 104,414 | $27,019 | $245.62 | $220.86 - $269.43 |
| Q3 2023 | 108,219 | $27,813 | $267.47 | $251.85 - $287.60 |
| Q2 2023 | 109,185 | $31,101 | $297.86 | $273.39 - $319.76 |
| Q1 2023 | 115,725 | $32,175 | $276.70 | $254.80 - $295.90 |
| Q4 2022 | 116,058 | $32,139 | $282.44 | $250.31 - $311.88 |
| Q3 2022 | 119,328 | $31,861 | $212.38 | $193.65 - $283.44 |
| Q2 2022 | 122,273 | $24,936 | $204.43 | $187.16 - $225.50 |
| Q1 2022 | 122,118 | $25,718 | $217.46 | $192.67 - $249.00 |
| Q4 2021 | 123,371 | $29,599 | $257.12 | $221.72 - $290.76 |
| Q3 2021 | 119,996 | $33,958 | $327.75 | $282.64 - $372.12 |
| Q2 2021 | 124,636 | $43,158 | $302.94 | $257.03 - $468.55 |
| Q1 2021 | 126,568 | $35,407 | $269.69 | $238.40 - $296.38 |
| Q4 2020 | 130,888 | $32,049 | $259.08 | $223.25 - $363.92 |
| Q3 2020 | 141,603 | $40,170 | $278.91 | $261.87 - $312.00 |
| Q2 2020 | 156,598 | $41,898 | $300.59 | $257.60 - $350.24 |
| Q1 2020 | 164,046 | $51,901 | $303.47 | $262.25 - $374.99 |
| Q4 2019 | 161,763 | $48,000 | $277.46 | $219.70 - $318.00 |
| Q3 2019 | 168,633 | $39,261 | $232.85 | $215.78 - $246.99 |
| Q2 2019 | 179,148 | $41,897 | $230.90 | $219.20 - $245.35 |
| Q1 2019 | 185,943 | $43,953 | $314.89 | $216.12 - $344.00 |
| Q4 2018 | 191,288 | $57,562 | $319.14 | $278.46 - $358.41 |
| Q3 2018 | 201,761 | $71,284 | $344.30 | $288.13 - $388.67 |
| Q2 2018 | 207,848 | $60,326 | $281.15 | $249.17 - $310.91 |
| Q1 2018 | 208,138 | $56,992 | $310.41 | $259.76 - $370.57 |
| Q4 2017 | 213,513 | $68,019 | $320.80 | $301.81 - $348.84 |
| Q3 2017 | 217,803 | $68,198 | $296.11 | $269.50 - $330.00 |
| Q2 2017 | 216,948 | $58,871 | $264.42 | $244.28 - $291.90 |
| Q1 2017 | 215,876 | $59,025 | $282.75 | $260.50 - $301.42 |
| Q4 2016 | 218,341 | $61,917 | $296.43 | $268.00 - $329.83 |
| Q3 2016 | 194,241 | $60,803 | $296.18 | $240.07 - $333.65 |
| Q2 2016 | 127,665 | $30,872 | $263.54 | $223.02 - $292.69 |