BIOGEN INC

Ticker: BIIB CUSIP: 09062X103 Class: COM

AVIVA PLC's Holding History (CIK: 0001140022)

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

Q4 2025

Shares 124,898 Value ($000) $21,981 Avg Close $163.37 Range $138.00 - $185.17

Q3 2025

Shares 115,706 Value ($000) $16,208 Avg Close $135.17 Range $121.05 - $150.28

Q2 2025

Shares 108,674 Value ($000) $13,648 Avg Close $124.60 Range $110.04 - $137.32

Q1 2025

Shares 101,729 Value ($000) $13,921 Avg Close $142.96 Range $128.51 - $157.09

Q4 2024

Shares 87,731 Value ($000) $13,416 Avg Close $168.67 Range $145.07 - $195.00

Q3 2024

Shares 18,532 Value ($000) $3,592 Avg Close $209.21 Range $188.78 - $238.00

Q2 2024

Shares 18,274 Value ($000) $4,236 Avg Close $217.32 Range $189.44 - $237.54

Q1 2024

Shares 32,123 Value ($000) $6,927 Avg Close $234.20 Range $211.02 - $268.30

Q4 2023

Shares 66,959 Value ($000) $17,327 Avg Close $245.62 Range $220.86 - $269.43

Q3 2023

Shares 49,189 Value ($000) $12,642 Avg Close $267.47 Range $251.85 - $287.60

Q2 2023

Shares 57,261 Value ($000) $16,311 Avg Close $297.86 Range $273.39 - $319.76

Q1 2023

Shares 32,768 Value ($000) $9,110 Avg Close $276.70 Range $254.80 - $295.90

Q4 2022

Shares 46,060 Value ($000) $12,755 Avg Close $282.44 Range $250.31 - $311.88

Q3 2022

Shares 21,948 Value ($000) $5,860 Avg Close $212.38 Range $193.65 - $283.44

Q2 2022

Shares 25,086 Value ($000) $5,116 Avg Close $204.43 Range $187.16 - $225.50

Q1 2022

Shares 37,369 Value ($000) $7,870 Avg Close $217.46 Range $192.67 - $249.00

Q4 2021

Shares 46,102 Value ($000) $11,061 Avg Close $257.12 Range $221.72 - $290.76

Q3 2021

Shares 49,629 Value ($000) $14,045 Avg Close $327.75 Range $282.64 - $372.12

Q2 2021

Shares 48,560 Value ($000) $16,815 Avg Close $302.94 Range $257.03 - $468.55

Q1 2021

Shares 50,583 Value ($000) $14,151 Avg Close $269.69 Range $238.40 - $296.38

Q4 2020

Shares 52,193 Value ($000) $12,780 Avg Close $259.08 Range $223.25 - $363.92

Q3 2020

Shares 51,005 Value ($000) $14,469 Avg Close $278.91 Range $261.87 - $312.00

Q2 2020

Shares 54,208 Value ($000) $14,503 Avg Close $300.59 Range $257.60 - $350.24

Q1 2020

Shares 61,098 Value ($000) $19,330 Avg Close $303.47 Range $262.25 - $374.99

Q4 2019

Shares 63,836 Value ($000) $18,942 Avg Close $277.46 Range $219.70 - $318.00

Q3 2019

Shares 64,989 Value ($000) $15,131 Avg Close $232.85 Range $215.78 - $246.99

Q2 2019

Shares 72,121 Value ($000) $16,867 Avg Close $230.90 Range $219.20 - $245.35

Q1 2019

Shares 74,458 Value ($000) $17,600 Avg Close $314.89 Range $216.12 - $344.00

Q4 2018

Shares 76,025 Value ($000) $22,877 Avg Close $319.14 Range $278.46 - $358.41

Q3 2018

Shares 97,541 Value ($000) $34,462 Avg Close $344.30 Range $288.13 - $388.67

Q2 2018

Shares 106,503 Value ($000) $30,911 Avg Close $281.15 Range $249.17 - $310.91

Q1 2018

Shares 107,892 Value ($000) $29,543 Avg Close $310.41 Range $259.76 - $370.57

Q4 2017

Shares 117,987 Value ($000) $37,587 Avg Close $320.80 Range $301.81 - $348.84

Q3 2017

Shares 135,360 Value ($000) $42,360 Avg Close $296.11 Range $269.50 - $330.00

Q2 2017

Shares 134,700 Value ($000) $36,541 Avg Close $264.42 Range $244.28 - $291.90

Q1 2017

Shares 134,440 Value ($000) $36,763 Avg Close $282.75 Range $260.50 - $301.42

Q4 2016

Shares 143,407 Value ($000) $40,693 Avg Close $296.43 Range $268.00 - $329.83

Q3 2016

Shares 143,189 Value ($000) $44,824 Avg Close $296.18 Range $240.07 - $333.65

Q2 2016

Shares 144,989 Value ($000) $35,066 Avg Close $263.54 Range $223.02 - $292.69

Q1 2016

Shares 124,421 Value ($000) $32,389 Avg Close $264.15 Range $242.07 - $301.02

Q4 2015

Shares 127,598 Value ($000) $39,089 Avg Close $287.35 Range $254.00 - $311.65

Q3 2015

Shares 130,565 Value ($000) $38,100 Avg Close $330.23 Range $265.00 - $412.24

Q2 2015

Shares 143,758 Value ($000) $58,070 Avg Close $401.33 Range $368.88 - $432.88

Q1 2015

Shares 136,880 Value ($000) $57,796 Avg Close $394.14 Range $334.40 - $480.18

Q4 2014

Shares 134,946 Value ($000) $45,807 Avg Close $323.51 Range $290.85 - $361.93

Q3 2014

Shares 114,980 Value ($000) $38,037 Avg Close $329.72 Range $298.31 - $349.00

Q2 2014

Shares 115,618 Value ($000) $36,456 Avg Close $300.97 Range $272.02 - $322.25

Q1 2014

Shares 115,565 Value ($000) $35,348 Avg Close $317.43 Range $270.62 - $358.89

Q4 2013

Shares 116,482 Value ($000) $32,586 Avg Close $258.65 Range $221.07 - $298.82

Q3 2013

Shares 116,446 Value ($000) $28,036 Avg Close $223.81 Range $203.55 - $248.95

Q2 2013

Shares 102,846 Value ($000) $22,132 Avg Close $213.68 Range $191.80 - $242.64

Period	Shares	Value ($000)	Average Close	Price Range
Q4 2025	124,898	$21,981	$163.37	$138.00 - $185.17
Q3 2025	115,706	$16,208	$135.17	$121.05 - $150.28
Q2 2025	108,674	$13,648	$124.60	$110.04 - $137.32
Q1 2025	101,729	$13,921	$142.96	$128.51 - $157.09
Q4 2024	87,731	$13,416	$168.67	$145.07 - $195.00
Q3 2024	18,532	$3,592	$209.21	$188.78 - $238.00
Q2 2024	18,274	$4,236	$217.32	$189.44 - $237.54
Q1 2024	32,123	$6,927	$234.20	$211.02 - $268.30
Q4 2023	66,959	$17,327	$245.62	$220.86 - $269.43
Q3 2023	49,189	$12,642	$267.47	$251.85 - $287.60
Q2 2023	57,261	$16,311	$297.86	$273.39 - $319.76
Q1 2023	32,768	$9,110	$276.70	$254.80 - $295.90
Q4 2022	46,060	$12,755	$282.44	$250.31 - $311.88
Q3 2022	21,948	$5,860	$212.38	$193.65 - $283.44
Q2 2022	25,086	$5,116	$204.43	$187.16 - $225.50
Q1 2022	37,369	$7,870	$217.46	$192.67 - $249.00
Q4 2021	46,102	$11,061	$257.12	$221.72 - $290.76
Q3 2021	49,629	$14,045	$327.75	$282.64 - $372.12
Q2 2021	48,560	$16,815	$302.94	$257.03 - $468.55
Q1 2021	50,583	$14,151	$269.69	$238.40 - $296.38
Q4 2020	52,193	$12,780	$259.08	$223.25 - $363.92
Q3 2020	51,005	$14,469	$278.91	$261.87 - $312.00
Q2 2020	54,208	$14,503	$300.59	$257.60 - $350.24
Q1 2020	61,098	$19,330	$303.47	$262.25 - $374.99
Q4 2019	63,836	$18,942	$277.46	$219.70 - $318.00
Q3 2019	64,989	$15,131	$232.85	$215.78 - $246.99
Q2 2019	72,121	$16,867	$230.90	$219.20 - $245.35
Q1 2019	74,458	$17,600	$314.89	$216.12 - $344.00
Q4 2018	76,025	$22,877	$319.14	$278.46 - $358.41
Q3 2018	97,541	$34,462	$344.30	$288.13 - $388.67
Q2 2018	106,503	$30,911	$281.15	$249.17 - $310.91
Q1 2018	107,892	$29,543	$310.41	$259.76 - $370.57
Q4 2017	117,987	$37,587	$320.80	$301.81 - $348.84
Q3 2017	135,360	$42,360	$296.11	$269.50 - $330.00
Q2 2017	134,700	$36,541	$264.42	$244.28 - $291.90
Q1 2017	134,440	$36,763	$282.75	$260.50 - $301.42
Q4 2016	143,407	$40,693	$296.43	$268.00 - $329.83
Q3 2016	143,189	$44,824	$296.18	$240.07 - $333.65
Q2 2016	144,989	$35,066	$263.54	$223.02 - $292.69
Q1 2016	124,421	$32,389	$264.15	$242.07 - $301.02
Q4 2015	127,598	$39,089	$287.35	$254.00 - $311.65
Q3 2015	130,565	$38,100	$330.23	$265.00 - $412.24
Q2 2015	143,758	$58,070	$401.33	$368.88 - $432.88
Q1 2015	136,880	$57,796	$394.14	$334.40 - $480.18
Q4 2014	134,946	$45,807	$323.51	$290.85 - $361.93
Q3 2014	114,980	$38,037	$329.72	$298.31 - $349.00
Q2 2014	115,618	$36,456	$300.97	$272.02 - $322.25
Q1 2014	115,565	$35,348	$317.43	$270.62 - $358.89
Q4 2013	116,482	$32,586	$258.65	$221.07 - $298.82
Q3 2013	116,446	$28,036	$223.81	$203.55 - $248.95
Q2 2013	102,846	$22,132	$213.68	$191.80 - $242.64