BIOGEN INC

Ticker: BIIB CUSIP: 09062X103 Class: COM

ACADIAN ASSET MANAGEMENT LLC's Holding History (CIK: 0000916542)

Note: Option positions (PUT/CALL) are excluded.

Q4 2025
Shares 187,457 Value ($000) $33 Avg Close $163.37 Range $138.00 - $185.17
Q3 2025
Shares 195,251 Value ($000) $27 Avg Close $135.17 Range $121.05 - $150.28
Q2 2025
Shares 199,462 Value ($000) $25 Avg Close $124.60 Range $110.04 - $137.32
Q1 2025
Shares 17,557 Value ($000) $2 Avg Close $142.96 Range $128.51 - $157.09
Q4 2024
Shares 3,200 Value ($000) $0 Avg Close $168.67 Range $145.07 - $195.00
Q3 2024
Shares 2,458 Value ($000) $0 Avg Close $209.21 Range $188.78 - $238.00
Q2 2024
Shares 5,702 Value ($000) $1 Avg Close $217.32 Range $189.44 - $237.54
Q1 2024
Shares 1,889 Value ($000) $0 Avg Close $234.20 Range $211.02 - $268.30
Q4 2023
Shares 1,927 Value ($000) $0 Avg Close $245.62 Range $220.86 - $269.43
Q3 2023
Shares 13,325 Value ($000) $3 Avg Close $267.47 Range $251.85 - $287.60
Q2 2023
Shares 46,040 Value ($000) $13 Avg Close $297.86 Range $273.39 - $319.76
Q1 2023
Shares 45,659 Value ($000) $13 Avg Close $276.70 Range $254.80 - $295.90
Q4 2022
Shares 59,621 Value ($000) $17 Avg Close $282.44 Range $250.31 - $311.88
Q3 2022
Shares 91,953 Value ($000) $24,547 Avg Close $212.38 Range $193.65 - $283.44
Q2 2022
Shares 75,075 Value ($000) $15,311 Avg Close $204.43 Range $187.16 - $225.50
Q1 2022
Shares 114,540 Value ($000) $24,120 Avg Close $217.46 Range $192.67 - $249.00
Q4 2021
Shares 27,794 Value ($000) $6,668 Avg Close $257.12 Range $221.72 - $290.76
Q3 2021
Shares 71,175 Value ($000) $20,132 Avg Close $327.75 Range $282.64 - $372.12
Q2 2021
Shares 179,221 Value ($000) $62,059 Avg Close $302.94 Range $257.03 - $468.55
Q1 2021
Shares 350,732 Value ($000) $98,121 Avg Close $269.69 Range $238.40 - $296.38
Q4 2020
Shares 503,200 Value ($000) $123,210 Avg Close $259.08 Range $223.25 - $363.92
Q3 2020
Shares 524,314 Value ($000) $148,737 Avg Close $278.91 Range $261.87 - $312.00
Q2 2020
Shares 384,302 Value ($000) $102,819 Avg Close $300.59 Range $257.60 - $350.24
Q1 2020
Shares 84,352 Value ($000) $26,687 Avg Close $303.47 Range $262.25 - $374.99
Q4 2019
Shares 2,775 Value ($000) $824 Avg Close $277.46 Range $219.70 - $318.00
Q3 2019
Shares 2,775 Value ($000) $646 Avg Close $232.85 Range $215.78 - $246.99
Q2 2019
Shares 3,909 Value ($000) $914 Avg Close $230.90 Range $219.20 - $245.35
Q1 2019
Shares 3,909 Value ($000) $924 Avg Close $314.89 Range $216.12 - $344.00
Q4 2018
Shares 13,161 Value ($000) $3,963 Avg Close $319.14 Range $278.46 - $358.41
Q3 2018
Shares 122,418 Value ($000) $43,254 Avg Close $344.30 Range $288.13 - $388.67
Q2 2018
Shares 5,349 Value ($000) $1,553 Avg Close $281.15 Range $249.17 - $310.91
Q1 2018
Shares 17,628 Value ($000) $4,827 Avg Close $310.41 Range $259.76 - $370.57
Q4 2017
Shares 9,385 Value ($000) $2,991 Avg Close $320.80 Range $301.81 - $348.84
Q3 2017
Shares 6,976 Value ($000) $2,185 Avg Close $296.11 Range $269.50 - $330.00
Q2 2017
Shares 11,923 Value ($000) $3,236 Avg Close $264.42 Range $244.28 - $291.90
Q1 2017
Shares 11,970 Value ($000) $3,273 Avg Close $282.75 Range $260.50 - $301.42
Q4 2016
Shares 10,434 Value ($000) $2,959 Avg Close $296.43 Range $268.00 - $329.83
Q3 2016
Shares 9,157 Value ($000) $2,866 Avg Close $296.18 Range $240.07 - $333.65
Q2 2016
Shares 4,305 Value ($000) $1,041 Avg Close $263.54 Range $223.02 - $292.69
Q1 2016
Shares 2,971 Value ($000) $773 Avg Close $264.15 Range $242.07 - $301.02
Q4 2015
Shares 5,661 Value ($000) $1,735 Avg Close $287.35 Range $254.00 - $311.65
Q3 2015
Shares 2,118 Value ($000) $618 Avg Close $330.23 Range $265.00 - $412.24
Q2 2015
Shares 2,405 Value ($000) $972 Avg Close $401.33 Range $368.88 - $432.88
Q1 2015
Shares 17 Value ($000) $7 Avg Close $394.14 Range $334.40 - $480.18
Q4 2014
Shares 17 Value ($000) $6 Avg Close $323.51 Range $290.85 - $361.93
Q1 2014
Shares 1,316 Value ($000) $403 Avg Close $317.43 Range $270.62 - $358.89
Q4 2013
Shares 616 Value ($000) $172 Avg Close $258.65 Range $221.07 - $298.82