BIOGEN INC

Ticker: BIIB CUSIP: 09062X103 Class: COM

RENAISSANCE TECHNOLOGIES LLC's Holding History (CIK: 0001037389)

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

Q4 2025

Shares 399,196 Value ($000) $70,255 Avg Close $163.37 Range $138.00 - $185.17

Q3 2025

Shares 964,406 Value ($000) $135,094 Avg Close $135.17 Range $121.05 - $150.28

Q2 2025

Shares 1,045,106 Value ($000) $131,255 Avg Close $124.60 Range $110.04 - $137.32

Q1 2025

Shares 804,506 Value ($000) $110,089 Avg Close $142.96 Range $128.51 - $157.09

Q4 2024

Shares 1,192,206 Value ($000) $182,312 Avg Close $168.67 Range $145.07 - $195.00

Q3 2024

Shares 952,706 Value ($000) $184,673 Avg Close $209.21 Range $188.78 - $238.00

Q2 2024

Shares 618,106 Value ($000) $143,289 Avg Close $217.32 Range $189.44 - $237.54

Q1 2024

Shares 884,704 Value ($000) $191 Avg Close $234.20 Range $211.02 - $268.30

Q4 2023

Shares 758,606 Value ($000) $196 Avg Close $245.62 Range $220.86 - $269.43

Q3 2023

Shares 1,086,397 Value ($000) $279 Avg Close $267.47 Range $251.85 - $287.60

Q2 2023

Shares 1,109,537 Value ($000) $316 Avg Close $297.86 Range $273.39 - $319.76

Q1 2023

Shares 1,263,837 Value ($000) $351 Avg Close $276.70 Range $254.80 - $295.90

Q4 2022

Shares 1,000,276 Value ($000) $277 Avg Close $282.44 Range $250.31 - $311.88

Q3 2022

Shares 1,154,507 Value ($000) $308,253 Avg Close $212.38 Range $193.65 - $283.44

Q2 2022

Shares 1,546,007 Value ($000) $315,293 Avg Close $204.43 Range $187.16 - $225.50

Q1 2022

Shares 1,044,207 Value ($000) $219,910 Avg Close $217.46 Range $192.67 - $249.00

Q4 2021

Shares 1,073,807 Value ($000) $257,628 Avg Close $257.12 Range $221.72 - $290.76

Q3 2021

Shares 981,707 Value ($000) $277,813 Avg Close $327.75 Range $282.64 - $372.12

Q2 2021

Shares 1,330,003 Value ($000) $460,540 Avg Close $302.94 Range $257.03 - $468.55

Q1 2021

Shares 1,938,162 Value ($000) $542,201 Avg Close $269.69 Range $238.40 - $296.38

Q4 2020

Shares 3,037,762 Value ($000) $743,826 Avg Close $259.08 Range $223.25 - $363.92

Q3 2020

Shares 3,816,961 Value ($000) $1,082,795 Avg Close $278.91 Range $261.87 - $312.00

Q2 2020

Shares 3,905,922 Value ($000) $1,045,029 Avg Close $300.59 Range $257.60 - $350.24

Q1 2020

Shares 4,473,912 Value ($000) $1,415,456 Avg Close $303.47 Range $262.25 - $374.99

Q4 2019

Shares 4,569,906 Value ($000) $1,356,028 Avg Close $277.46 Range $219.70 - $318.00

Q3 2019

Shares 4,221,206 Value ($000) $982,781 Avg Close $232.85 Range $215.78 - $246.99

Q2 2019

Shares 2,483,077 Value ($000) $580,717 Avg Close $230.90 Range $219.20 - $245.35

Q1 2019

Shares 1,631,814 Value ($000) $385,728 Avg Close $314.89 Range $216.12 - $344.00

Q4 2018

Shares 1,014,714 Value ($000) $305,348 Avg Close $319.14 Range $278.46 - $358.41

Q3 2018

Shares 846,075 Value ($000) $298,927 Avg Close $344.30 Range $288.13 - $388.67

Q2 2018

Shares 321,500 Value ($000) $93,312 Avg Close $281.15 Range $249.17 - $310.91

Q1 2018

Shares 627,661 Value ($000) $171,866 Avg Close $310.41 Range $259.76 - $370.57

Q3 2017

Shares 120,161 Value ($000) $37,625 Avg Close $296.11 Range $269.50 - $330.00

Q2 2017

Shares 762,861 Value ($000) $207,010 Avg Close $264.42 Range $244.28 - $291.90

Q1 2017

Shares 848,961 Value ($000) $232,123 Avg Close $282.75 Range $260.50 - $301.42

Q4 2016

Shares 707,495 Value ($000) $200,631 Avg Close $296.43 Range $268.00 - $329.83

Q3 2016

Shares 238,261 Value ($000) $74,583 Avg Close $296.18 Range $240.07 - $333.65

Q2 2016

Shares 40,400 Value ($000) $9,770 Avg Close $263.54 Range $223.02 - $292.69

Q1 2016

Shares 127,661 Value ($000) $33,233 Avg Close $264.15 Range $242.07 - $301.02

Q3 2015

Shares 34,961 Value ($000) $10,202 Avg Close $330.23 Range $265.00 - $412.24

Q2 2015

Shares 105,261 Value ($000) $42,519 Avg Close $401.33 Range $368.88 - $432.88

Q1 2015

Shares 30,300 Value ($000) $12,794 Avg Close $394.14 Range $334.40 - $480.18

Q4 2014

Shares 65,161 Value ($000) $22,119 Avg Close $323.51 Range $290.85 - $361.93

Q3 2014

Shares 92,661 Value ($000) $30,653 Avg Close $329.72 Range $298.31 - $349.00

Q2 2014

Shares 129,261 Value ($000) $40,757 Avg Close $300.97 Range $272.02 - $322.25

Q4 2013

Shares 542,338 Value ($000) $151,623 Avg Close $258.65 Range $221.07 - $298.82

Q3 2013

Shares 869,700 Value ($000) $209,389 Avg Close $223.81 Range $203.55 - $248.95

Q2 2013

Shares 1,393,500 Value ($000) $299,881 Avg Close $213.68 Range $191.80 - $242.64

Period	Shares	Value ($000)	Average Close	Price Range
Q4 2025	399,196	$70,255	$163.37	$138.00 - $185.17
Q3 2025	964,406	$135,094	$135.17	$121.05 - $150.28
Q2 2025	1,045,106	$131,255	$124.60	$110.04 - $137.32
Q1 2025	804,506	$110,089	$142.96	$128.51 - $157.09
Q4 2024	1,192,206	$182,312	$168.67	$145.07 - $195.00
Q3 2024	952,706	$184,673	$209.21	$188.78 - $238.00
Q2 2024	618,106	$143,289	$217.32	$189.44 - $237.54
Q1 2024	884,704	$191	$234.20	$211.02 - $268.30
Q4 2023	758,606	$196	$245.62	$220.86 - $269.43
Q3 2023	1,086,397	$279	$267.47	$251.85 - $287.60
Q2 2023	1,109,537	$316	$297.86	$273.39 - $319.76
Q1 2023	1,263,837	$351	$276.70	$254.80 - $295.90
Q4 2022	1,000,276	$277	$282.44	$250.31 - $311.88
Q3 2022	1,154,507	$308,253	$212.38	$193.65 - $283.44
Q2 2022	1,546,007	$315,293	$204.43	$187.16 - $225.50
Q1 2022	1,044,207	$219,910	$217.46	$192.67 - $249.00
Q4 2021	1,073,807	$257,628	$257.12	$221.72 - $290.76
Q3 2021	981,707	$277,813	$327.75	$282.64 - $372.12
Q2 2021	1,330,003	$460,540	$302.94	$257.03 - $468.55
Q1 2021	1,938,162	$542,201	$269.69	$238.40 - $296.38
Q4 2020	3,037,762	$743,826	$259.08	$223.25 - $363.92
Q3 2020	3,816,961	$1,082,795	$278.91	$261.87 - $312.00
Q2 2020	3,905,922	$1,045,029	$300.59	$257.60 - $350.24
Q1 2020	4,473,912	$1,415,456	$303.47	$262.25 - $374.99
Q4 2019	4,569,906	$1,356,028	$277.46	$219.70 - $318.00
Q3 2019	4,221,206	$982,781	$232.85	$215.78 - $246.99
Q2 2019	2,483,077	$580,717	$230.90	$219.20 - $245.35
Q1 2019	1,631,814	$385,728	$314.89	$216.12 - $344.00
Q4 2018	1,014,714	$305,348	$319.14	$278.46 - $358.41
Q3 2018	846,075	$298,927	$344.30	$288.13 - $388.67
Q2 2018	321,500	$93,312	$281.15	$249.17 - $310.91
Q1 2018	627,661	$171,866	$310.41	$259.76 - $370.57
Q3 2017	120,161	$37,625	$296.11	$269.50 - $330.00
Q2 2017	762,861	$207,010	$264.42	$244.28 - $291.90
Q1 2017	848,961	$232,123	$282.75	$260.50 - $301.42
Q4 2016	707,495	$200,631	$296.43	$268.00 - $329.83
Q3 2016	238,261	$74,583	$296.18	$240.07 - $333.65
Q2 2016	40,400	$9,770	$263.54	$223.02 - $292.69
Q1 2016	127,661	$33,233	$264.15	$242.07 - $301.02
Q3 2015	34,961	$10,202	$330.23	$265.00 - $412.24
Q2 2015	105,261	$42,519	$401.33	$368.88 - $432.88
Q1 2015	30,300	$12,794	$394.14	$334.40 - $480.18
Q4 2014	65,161	$22,119	$323.51	$290.85 - $361.93
Q3 2014	92,661	$30,653	$329.72	$298.31 - $349.00
Q2 2014	129,261	$40,757	$300.97	$272.02 - $322.25
Q4 2013	542,338	$151,623	$258.65	$221.07 - $298.82
Q3 2013	869,700	$209,389	$223.81	$203.55 - $248.95
Q2 2013	1,393,500	$299,881	$213.68	$191.80 - $242.64