BIOGEN INC

Ticker: BIIB CUSIP: 09062X103 Class: COM

CAISSE DE DEPOT ET PLACEMENT DU QUEBEC's Holding History (CIK: 0000898286)

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

Q4 2025

Shares 588,545 Value ($000) $103,578 Avg Close $163.37 Range $138.00 - $185.17

Q3 2025

Shares 569,253 Value ($000) $79,741 Avg Close $135.17 Range $121.05 - $150.28

Q2 2025

Shares 69,577 Value ($000) $8,738 Avg Close $124.60 Range $110.04 - $137.32

Q1 2025

Shares 81,900 Value ($000) $11,207 Avg Close $142.96 Range $128.51 - $157.09

Q2 2023

Shares 8,185 Value ($000) $2,331 Avg Close $297.86 Range $273.39 - $319.76

Q3 2022

Shares 19,411 Value ($000) $5,183 Avg Close $212.38 Range $193.65 - $283.44

Q2 2022

Shares 39,531 Value ($000) $8,062 Avg Close $204.43 Range $187.16 - $225.50

Q1 2022

Shares 56,531 Value ($000) $11,905 Avg Close $217.46 Range $192.67 - $249.00

Q4 2021

Shares 157,831 Value ($000) $37,867 Avg Close $257.12 Range $221.72 - $290.76

Q3 2021

Shares 136,477 Value ($000) $38,622 Avg Close $327.75 Range $282.64 - $372.12

Q2 2021

Shares 84,664 Value ($000) $29,317 Avg Close $302.94 Range $257.03 - $468.55

Q1 2021

Shares 28,362 Value ($000) $7,934 Avg Close $269.69 Range $238.40 - $296.38

Q4 2020

Shares 20,372 Value ($000) $4,988 Avg Close $259.08 Range $223.25 - $363.92

Q3 2020

Shares 18,852 Value ($000) $5,348 Avg Close $278.91 Range $261.87 - $312.00

Q2 2020

Shares 20,652 Value ($000) $5,525 Avg Close $300.59 Range $257.60 - $350.24

Q1 2020

Shares 38,952 Value ($000) $12,324 Avg Close $303.47 Range $262.25 - $374.99

Q4 2019

Shares 36,652 Value ($000) $10,876 Avg Close $277.46 Range $219.70 - $318.00

Q3 2019

Shares 38,052 Value ($000) $8,859 Avg Close $232.85 Range $215.78 - $246.99

Q2 2019

Shares 47,691 Value ($000) $11,153 Avg Close $230.90 Range $219.20 - $245.35

Q1 2019

Shares 73,833 Value ($000) $17,453 Avg Close $314.89 Range $216.12 - $344.00

Q4 2018

Shares 91,071 Value ($000) $27,405 Avg Close $319.14 Range $278.46 - $358.41

Q3 2018

Shares 78,852 Value ($000) $27,859 Avg Close $344.30 Range $288.13 - $388.67

Q2 2018

Shares 6,552 Value ($000) $1,902 Avg Close $281.15 Range $249.17 - $310.91

Q1 2018

Shares 45,652 Value ($000) $12,500 Avg Close $310.41 Range $259.76 - $370.57

Q4 2017

Shares 33,891 Value ($000) $10,797 Avg Close $320.80 Range $301.81 - $348.84

Q3 2017

Shares 47,352 Value ($000) $14,889 Avg Close $296.11 Range $269.50 - $330.00

Q2 2017

Shares 46,452 Value ($000) $12,570 Avg Close $264.42 Range $244.28 - $291.90

Q1 2017

Shares 40,152 Value ($000) $10,990 Avg Close $282.75 Range $260.50 - $301.42

Q4 2016

Shares 40,752 Value ($000) $11,542 Avg Close $296.43 Range $268.00 - $329.83

Q3 2016

Shares 1,952 Value ($000) $611 Avg Close $296.18 Range $240.07 - $333.65

Q2 2016

Shares 56,152 Value ($000) $13,579 Avg Close $263.54 Range $223.02 - $292.69

Q1 2016

Shares 40,252 Value ($000) $10,478 Avg Close $264.15 Range $242.07 - $301.02

Q4 2015

Shares 94,778 Value ($000) $29,035 Avg Close $287.35 Range $254.00 - $311.65

Q3 2015

Shares 103,878 Value ($000) $30,313 Avg Close $330.23 Range $265.00 - $412.24

Q2 2015

Shares 103,278 Value ($000) $41,718 Avg Close $401.33 Range $368.88 - $432.88

Q1 2015

Shares 103,578 Value ($000) $43,735 Avg Close $394.14 Range $334.40 - $480.18

Q4 2014

Shares 114,578 Value ($000) $38,894 Avg Close $323.51 Range $290.85 - $361.93

Q3 2014

Shares 124,878 Value ($000) $41,311 Avg Close $329.72 Range $298.31 - $349.00

Q2 2014

Shares 129,678 Value ($000) $40,889 Avg Close $300.97 Range $272.02 - $322.25

Q1 2014

Shares 135,678 Value ($000) $41,500 Avg Close $317.43 Range $270.62 - $358.89

Q4 2013

Shares 133,178 Value ($000) $37,257 Avg Close $258.65 Range $221.07 - $298.82

Q3 2013

Shares 152,578 Value ($000) $36,735 Avg Close $223.81 Range $203.55 - $248.95

Q2 2013

Shares 181,478 Value ($000) $39,054 Avg Close $213.68 Range $191.80 - $242.64

Period	Shares	Value ($000)	Average Close	Price Range
Q4 2025	588,545	$103,578	$163.37	$138.00 - $185.17
Q3 2025	569,253	$79,741	$135.17	$121.05 - $150.28
Q2 2025	69,577	$8,738	$124.60	$110.04 - $137.32
Q1 2025	81,900	$11,207	$142.96	$128.51 - $157.09
Q2 2023	8,185	$2,331	$297.86	$273.39 - $319.76
Q3 2022	19,411	$5,183	$212.38	$193.65 - $283.44
Q2 2022	39,531	$8,062	$204.43	$187.16 - $225.50
Q1 2022	56,531	$11,905	$217.46	$192.67 - $249.00
Q4 2021	157,831	$37,867	$257.12	$221.72 - $290.76
Q3 2021	136,477	$38,622	$327.75	$282.64 - $372.12
Q2 2021	84,664	$29,317	$302.94	$257.03 - $468.55
Q1 2021	28,362	$7,934	$269.69	$238.40 - $296.38
Q4 2020	20,372	$4,988	$259.08	$223.25 - $363.92
Q3 2020	18,852	$5,348	$278.91	$261.87 - $312.00
Q2 2020	20,652	$5,525	$300.59	$257.60 - $350.24
Q1 2020	38,952	$12,324	$303.47	$262.25 - $374.99
Q4 2019	36,652	$10,876	$277.46	$219.70 - $318.00
Q3 2019	38,052	$8,859	$232.85	$215.78 - $246.99
Q2 2019	47,691	$11,153	$230.90	$219.20 - $245.35
Q1 2019	73,833	$17,453	$314.89	$216.12 - $344.00
Q4 2018	91,071	$27,405	$319.14	$278.46 - $358.41
Q3 2018	78,852	$27,859	$344.30	$288.13 - $388.67
Q2 2018	6,552	$1,902	$281.15	$249.17 - $310.91
Q1 2018	45,652	$12,500	$310.41	$259.76 - $370.57
Q4 2017	33,891	$10,797	$320.80	$301.81 - $348.84
Q3 2017	47,352	$14,889	$296.11	$269.50 - $330.00
Q2 2017	46,452	$12,570	$264.42	$244.28 - $291.90
Q1 2017	40,152	$10,990	$282.75	$260.50 - $301.42
Q4 2016	40,752	$11,542	$296.43	$268.00 - $329.83
Q3 2016	1,952	$611	$296.18	$240.07 - $333.65
Q2 2016	56,152	$13,579	$263.54	$223.02 - $292.69
Q1 2016	40,252	$10,478	$264.15	$242.07 - $301.02
Q4 2015	94,778	$29,035	$287.35	$254.00 - $311.65
Q3 2015	103,878	$30,313	$330.23	$265.00 - $412.24
Q2 2015	103,278	$41,718	$401.33	$368.88 - $432.88
Q1 2015	103,578	$43,735	$394.14	$334.40 - $480.18
Q4 2014	114,578	$38,894	$323.51	$290.85 - $361.93
Q3 2014	124,878	$41,311	$329.72	$298.31 - $349.00
Q2 2014	129,678	$40,889	$300.97	$272.02 - $322.25
Q1 2014	135,678	$41,500	$317.43	$270.62 - $358.89
Q4 2013	133,178	$37,257	$258.65	$221.07 - $298.82
Q3 2013	152,578	$36,735	$223.81	$203.55 - $248.95
Q2 2013	181,478	$39,054	$213.68	$191.80 - $242.64