BIOGEN INC

Ticker: BIIB CUSIP: 09062X103 Class: COM

SCHRODER INVESTMENT MANAGEMENT GROUP's Holding History (CIK: 0001086619)

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

Q4 2025

Shares 57,272 Value ($000) $10,079 Avg Close $163.37 Range $138.00 - $185.17

Q3 2025

Shares 62,121 Value ($000) $8,605 Avg Close $135.17 Range $121.05 - $150.28

Q2 2025

Shares 13,767 Value ($000) $1,729 Avg Close $124.60 Range $110.04 - $137.32

Q1 2025

Shares 60,335 Value ($000) $8,349 Avg Close $142.96 Range $128.51 - $157.09

Q4 2024

Shares 42,615 Value ($000) $6,400 Avg Close $168.67 Range $145.07 - $195.00

Q3 2024

Shares 64,059 Value ($000) $12,470 Avg Close $209.21 Range $188.78 - $238.00

Q2 2024

Shares 35,980 Value ($000) $8,341 Avg Close $217.32 Range $189.44 - $237.54

Q1 2024

Shares 79,489 Value ($000) $17,140 Avg Close $234.20 Range $211.02 - $268.30

Q4 2023

Shares 92,631 Value ($000) $23,970 Avg Close $245.62 Range $220.86 - $269.43

Q3 2023

Shares 54,683 Value ($000) $14,054 Avg Close $267.47 Range $251.85 - $287.60

Q2 2023

Shares 75,960 Value ($000) $21,637 Avg Close $297.86 Range $273.39 - $319.76

Q1 2023

Shares 74,069 Value ($000) $20,593 Avg Close $276.70 Range $254.80 - $295.90

Q4 2022

Shares 17,509 Value ($000) $4,849 Avg Close $282.44 Range $250.31 - $311.88

Q3 2022

Shares 17,189 Value ($000) $4,590 Avg Close $212.38 Range $193.65 - $283.44

Q2 2022

Shares 17,598 Value ($000) $3,612 Avg Close $204.43 Range $187.16 - $225.50

Q1 2022

Shares 14,689 Value ($000) $3,100 Avg Close $217.46 Range $192.67 - $249.00

Q4 2021

Shares 9,754 Value ($000) $2,341 Avg Close $257.12 Range $221.72 - $290.76

Q3 2021

Shares 10,751 Value ($000) $3,042 Avg Close $327.75 Range $282.64 - $372.12

Q2 2021

Shares 12,886 Value ($000) $4,462 Avg Close $302.94 Range $257.03 - $468.55

Q1 2021

Shares 16,832 Value ($000) $4,709 Avg Close $269.69 Range $238.40 - $296.38

Q4 2020

Shares 279,608 Value ($000) $68,465 Avg Close $259.08 Range $223.25 - $363.92

Q3 2020

Shares 442,440 Value ($000) $122,840 Avg Close $278.91 Range $261.87 - $312.00

Q2 2020

Shares 603,037 Value ($000) $161,343 Avg Close $300.59 Range $257.60 - $350.24

Q1 2020

Shares 513,632 Value ($000) $159,940 Avg Close $303.47 Range $262.25 - $374.99

Q4 2019

Shares 486,109 Value ($000) $144,244 Avg Close $277.46 Range $219.70 - $318.00

Q3 2019

Shares 497,251 Value ($000) $114,477 Avg Close $232.85 Range $215.78 - $246.99

Q2 2019

Shares 447,550 Value ($000) $104,668 Avg Close $230.90 Range $219.20 - $245.35

Q1 2019

Shares 393,945 Value ($000) $93,120 Avg Close $314.89 Range $216.12 - $344.00

Q4 2018

Shares 416,480 Value ($000) $125,327 Avg Close $319.14 Range $278.46 - $358.41

Q3 2018

Shares 481,605 Value ($000) $170,156 Avg Close $344.30 Range $288.13 - $388.67

Q2 2018

Shares 681,877 Value ($000) $196,892 Avg Close $281.15 Range $249.17 - $310.91

Q1 2018

Shares 904,266 Value ($000) $247,606 Avg Close $310.41 Range $259.76 - $370.57

Q4 2017

Shares 795,969 Value ($000) $253,572 Avg Close $320.80 Range $301.81 - $348.84

Q3 2017

Shares 495,471 Value ($000) $153,596 Avg Close $296.11 Range $269.50 - $330.00

Q2 2017

Shares 305,970 Value ($000) $83,187 Avg Close $264.42 Range $244.28 - $291.90

Q1 2017

Shares 220,989 Value ($000) $59,459 Avg Close $282.75 Range $260.50 - $301.42

Q4 2016

Shares 278,353 Value ($000) $78,936 Avg Close $296.43 Range $268.00 - $329.83

Q3 2016

Shares 518,925 Value ($000) $162,440 Avg Close $296.18 Range $240.07 - $333.65

Q2 2016

Shares 365,393 Value ($000) $88,360 Avg Close $263.54 Range $223.02 - $292.69

Q1 2016

Shares 89,896 Value ($000) $22,850 Avg Close $264.15 Range $242.07 - $301.02

Q4 2015

Shares 91,282 Value ($000) $27,965 Avg Close $287.35 Range $254.00 - $311.65

Q3 2015

Shares 383,729 Value ($000) $111,976 Avg Close $330.23 Range $265.00 - $412.24

Q2 2015

Shares 137,538 Value ($000) $54,495 Avg Close $401.33 Range $368.88 - $432.88

Q1 2015

Shares 193,515 Value ($000) $83,186 Avg Close $394.14 Range $334.40 - $480.18

Q4 2014

Shares 192,434 Value ($000) $65,322 Avg Close $323.51 Range $290.85 - $361.93

Q3 2014

Shares 212,289 Value ($000) $70,227,325 Avg Close $329.72 Range $298.31 - $349.00

Q2 2014

Shares 241,739 Value ($000) $76,222,724 Avg Close $300.97 Range $272.02 - $322.25

Q1 2014

Shares 73,278 Value ($000) $22,413,542 Avg Close $317.43 Range $270.62 - $358.89

Q4 2013

Shares 49,470 Value ($000) $13,830,427 Avg Close $258.65 Range $221.07 - $298.82

Q3 2013

Shares 46,470 Value ($000) $11,188,117 Avg Close $223.81 Range $203.55 - $248.95

Q2 2013

Shares 67,687 Value ($000) $14,566,242 Avg Close $213.68 Range $191.80 - $242.64

Period	Shares	Value ($000)	Average Close	Price Range
Q4 2025	57,272	$10,079	$163.37	$138.00 - $185.17
Q3 2025	62,121	$8,605	$135.17	$121.05 - $150.28
Q2 2025	13,767	$1,729	$124.60	$110.04 - $137.32
Q1 2025	60,335	$8,349	$142.96	$128.51 - $157.09
Q4 2024	42,615	$6,400	$168.67	$145.07 - $195.00
Q3 2024	64,059	$12,470	$209.21	$188.78 - $238.00
Q2 2024	35,980	$8,341	$217.32	$189.44 - $237.54
Q1 2024	79,489	$17,140	$234.20	$211.02 - $268.30
Q4 2023	92,631	$23,970	$245.62	$220.86 - $269.43
Q3 2023	54,683	$14,054	$267.47	$251.85 - $287.60
Q2 2023	75,960	$21,637	$297.86	$273.39 - $319.76
Q1 2023	74,069	$20,593	$276.70	$254.80 - $295.90
Q4 2022	17,509	$4,849	$282.44	$250.31 - $311.88
Q3 2022	17,189	$4,590	$212.38	$193.65 - $283.44
Q2 2022	17,598	$3,612	$204.43	$187.16 - $225.50
Q1 2022	14,689	$3,100	$217.46	$192.67 - $249.00
Q4 2021	9,754	$2,341	$257.12	$221.72 - $290.76
Q3 2021	10,751	$3,042	$327.75	$282.64 - $372.12
Q2 2021	12,886	$4,462	$302.94	$257.03 - $468.55
Q1 2021	16,832	$4,709	$269.69	$238.40 - $296.38
Q4 2020	279,608	$68,465	$259.08	$223.25 - $363.92
Q3 2020	442,440	$122,840	$278.91	$261.87 - $312.00
Q2 2020	603,037	$161,343	$300.59	$257.60 - $350.24
Q1 2020	513,632	$159,940	$303.47	$262.25 - $374.99
Q4 2019	486,109	$144,244	$277.46	$219.70 - $318.00
Q3 2019	497,251	$114,477	$232.85	$215.78 - $246.99
Q2 2019	447,550	$104,668	$230.90	$219.20 - $245.35
Q1 2019	393,945	$93,120	$314.89	$216.12 - $344.00
Q4 2018	416,480	$125,327	$319.14	$278.46 - $358.41
Q3 2018	481,605	$170,156	$344.30	$288.13 - $388.67
Q2 2018	681,877	$196,892	$281.15	$249.17 - $310.91
Q1 2018	904,266	$247,606	$310.41	$259.76 - $370.57
Q4 2017	795,969	$253,572	$320.80	$301.81 - $348.84
Q3 2017	495,471	$153,596	$296.11	$269.50 - $330.00
Q2 2017	305,970	$83,187	$264.42	$244.28 - $291.90
Q1 2017	220,989	$59,459	$282.75	$260.50 - $301.42
Q4 2016	278,353	$78,936	$296.43	$268.00 - $329.83
Q3 2016	518,925	$162,440	$296.18	$240.07 - $333.65
Q2 2016	365,393	$88,360	$263.54	$223.02 - $292.69
Q1 2016	89,896	$22,850	$264.15	$242.07 - $301.02
Q4 2015	91,282	$27,965	$287.35	$254.00 - $311.65
Q3 2015	383,729	$111,976	$330.23	$265.00 - $412.24
Q2 2015	137,538	$54,495	$401.33	$368.88 - $432.88
Q1 2015	193,515	$83,186	$394.14	$334.40 - $480.18
Q4 2014	192,434	$65,322	$323.51	$290.85 - $361.93
Q3 2014	212,289	$70,227,325	$329.72	$298.31 - $349.00
Q2 2014	241,739	$76,222,724	$300.97	$272.02 - $322.25
Q1 2014	73,278	$22,413,542	$317.43	$270.62 - $358.89
Q4 2013	49,470	$13,830,427	$258.65	$221.07 - $298.82
Q3 2013	46,470	$11,188,117	$223.81	$203.55 - $248.95
Q2 2013	67,687	$14,566,242	$213.68	$191.80 - $242.64