BIOGEN INC

Ticker: BIIB CUSIP: 09062X103 Class: COM

WELLINGTON MANAGEMENT GROUP LLP's Holding History (CIK: 0000902219)

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

Q4 2025
Shares 3,551,269 Value ($000) $624,988 Avg Close $163.37 Range $138.00 - $185.17
Q3 2025
Shares 4,246,504 Value ($000) $594,850 Avg Close $135.17 Range $121.05 - $150.28
Q2 2025
Shares 4,798,420 Value ($000) $602,634 Avg Close $124.60 Range $110.04 - $137.32
Q1 2025
Shares 4,672,437 Value ($000) $639,376 Avg Close $142.96 Range $128.51 - $157.09
Q4 2024
Shares 4,930,723 Value ($000) $754,006 Avg Close $168.67 Range $145.07 - $195.00
Q3 2024
Shares 5,131,193 Value ($000) $994,630 Avg Close $209.21 Range $188.78 - $238.00
Q2 2024
Shares 5,166,491 Value ($000) $1,197,696 Avg Close $217.32 Range $189.44 - $237.54
Q1 2024
Shares 5,120,142 Value ($000) $1,104,056 Avg Close $234.20 Range $211.02 - $268.30
Q4 2023
Shares 5,324,396 Value ($000) $1,377,794 Avg Close $245.62 Range $220.86 - $269.43
Q3 2023
Shares 5,374,310 Value ($000) $1,381,251 Avg Close $267.47 Range $251.85 - $287.60
Q2 2023
Shares 5,346,359 Value ($000) $1,522,910 Avg Close $297.86 Range $273.39 - $319.76
Q1 2023
Shares 5,452,888 Value ($000) $1,516,066 Avg Close $276.70 Range $254.80 - $295.90
Q4 2022
Shares 5,411,213 Value ($000) $1,498,473 Avg Close $282.44 Range $250.31 - $311.88
Q3 2022
Shares 5,135,617 Value ($000) $1,371,210 Avg Close $212.38 Range $193.65 - $283.44
Q2 2022
Shares 6,286,725 Value ($000) $1,282,115 Avg Close $204.43 Range $187.16 - $225.50
Q1 2022
Shares 6,249,526 Value ($000) $1,316,151 Avg Close $217.46 Range $192.67 - $249.00
Q4 2021
Shares 6,184,455 Value ($000) $1,483,776 Avg Close $257.12 Range $221.72 - $290.76
Q3 2021
Shares 5,577,720 Value ($000) $1,578,439 Avg Close $327.75 Range $282.64 - $372.12
Q2 2021
Shares 5,601,861 Value ($000) $1,939,756 Avg Close $302.94 Range $257.03 - $468.55
Q1 2021
Shares 5,902,841 Value ($000) $1,651,320 Avg Close $269.69 Range $238.40 - $296.38
Q4 2020
Shares 5,781,973 Value ($000) $1,415,774 Avg Close $259.08 Range $223.25 - $363.92
Q3 2020
Shares 4,857,192 Value ($000) $1,377,888 Avg Close $278.91 Range $261.87 - $312.00
Q2 2020
Shares 4,773,760 Value ($000) $1,277,219 Avg Close $300.59 Range $257.60 - $350.24
Q1 2020
Shares 4,095,239 Value ($000) $1,295,651 Avg Close $303.47 Range $262.25 - $374.99
Q4 2019
Shares 4,655,756 Value ($000) $1,381,503 Avg Close $277.46 Range $219.70 - $318.00
Q3 2019
Shares 3,672,196 Value ($000) $854,961 Avg Close $232.85 Range $215.78 - $246.99
Q2 2019
Shares 3,798,965 Value ($000) $888,464 Avg Close $230.90 Range $219.20 - $245.35
Q1 2019
Shares 5,208,902 Value ($000) $1,231,280 Avg Close $314.89 Range $216.12 - $344.00
Q4 2018
Shares 5,400,991 Value ($000) $1,625,267 Avg Close $319.14 Range $278.46 - $358.41
Q3 2018
Shares 5,534,010 Value ($000) $1,955,221 Avg Close $344.30 Range $288.13 - $388.67
Q2 2018
Shares 5,060,130 Value ($000) $1,468,653 Avg Close $281.15 Range $249.17 - $310.91
Q1 2018
Shares 5,073,805 Value ($000) $1,389,310 Avg Close $310.41 Range $259.76 - $370.57
Q4 2017
Shares 5,109,262 Value ($000) $1,627,659 Avg Close $320.80 Range $301.81 - $348.84
Q3 2017
Shares 5,167,662 Value ($000) $1,618,099 Avg Close $296.11 Range $269.50 - $330.00
Q2 2017
Shares 5,228,480 Value ($000) $1,418,801 Avg Close $264.42 Range $244.28 - $291.90
Q1 2017
Shares 5,712,355 Value ($000) $1,561,872 Avg Close $282.75 Range $260.50 - $301.42
Q4 2016
Shares 5,844,274 Value ($000) $1,657,318 Avg Close $296.43 Range $268.00 - $329.83
Q3 2016
Shares 4,537,579 Value ($000) $1,420,398 Avg Close $296.18 Range $240.07 - $333.65
Q2 2016
Shares 4,811,659 Value ($000) $1,163,555 Avg Close $263.54 Range $223.02 - $292.69
Q1 2016
Shares 4,658,269 Value ($000) $1,212,640 Avg Close $264.15 Range $242.07 - $301.02
Q4 2015
Shares 5,279,240 Value ($000) $1,617,295 Avg Close $287.35 Range $254.00 - $311.65
Q3 2015
Shares 5,662,893 Value ($000) $1,652,489 Avg Close $330.23 Range $265.00 - $412.24
Q2 2015
Shares 4,834,187 Value ($000) $1,952,721 Avg Close $401.33 Range $368.88 - $432.88
Q1 2015
Shares 3,467,280 Value ($000) $1,464,025 Avg Close $394.14 Range $334.40 - $480.18
Q4 2014
Shares 2,535,845 Value ($000) $860,792 Avg Close $323.51 Range $290.85 - $361.93
Q3 2014
Shares 1,529,050 Value ($000) $505,825 Avg Close $329.72 Range $298.31 - $349.00
Q2 2014
Shares 1,801,125 Value ($000) $567,912 Avg Close $300.97 Range $272.02 - $322.25
Q1 2014
Shares 2,641,911 Value ($000) $808,081 Avg Close $317.43 Range $270.62 - $358.89
Q4 2013
Shares 3,173,597 Value ($000) $887,814 Avg Close $258.65 Range $221.07 - $298.82
Q3 2013
Shares 3,766,804 Value ($000) $906,895 Avg Close $223.81 Range $203.55 - $248.95
Q2 2013
Shares 3,543,369 Value ($000) $762,532 Avg Close $213.68 Range $191.80 - $242.64