BIOGEN INC

Ticker: BIIB CUSIP: 09062X103 Class: COM

TD Asset Management Inc's Holding History (CIK: 0001056053)

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

Q4 2025

Shares 135,352 Value ($000) $23,821 Avg Close $163.37 Range $138.00 - $185.17

Q3 2025

Shares 161,195 Value ($000) $22,580 Avg Close $135.17 Range $121.05 - $150.28

Q2 2025

Shares 143,027 Value ($000) $17,963 Avg Close $124.60 Range $110.04 - $137.32

Q1 2025

Shares 284,376 Value ($000) $38,914 Avg Close $142.96 Range $128.51 - $157.09

Q4 2024

Shares 355,706 Value ($000) $54,395 Avg Close $168.67 Range $145.07 - $195.00

Q3 2024

Shares 371,001 Value ($000) $72,223 Avg Close $209.21 Range $188.78 - $238.00

Q2 2024

Shares 380,788 Value ($000) $88,274 Avg Close $217.32 Range $189.44 - $237.54

Q1 2024

Shares 367,236 Value ($000) $79,187 Avg Close $234.20 Range $211.02 - $268.30

Q4 2023

Shares 389,984 Value ($000) $100,916 Avg Close $245.62 Range $220.86 - $269.43

Q3 2023

Shares 281,028 Value ($000) $72,227 Avg Close $267.47 Range $251.85 - $287.60

Q2 2023

Shares 216,184 Value ($000) $61,580 Avg Close $297.86 Range $273.39 - $319.76

Q1 2023

Shares 155,859 Value ($000) $43,333 Avg Close $276.70 Range $254.80 - $295.90

Q4 2022

Shares 159,719 Value ($000) $44,229 Avg Close $282.44 Range $250.31 - $311.88

Q3 2022

Shares 164,451 Value ($000) $43,462 Avg Close $212.38 Range $193.65 - $283.44

Q2 2022

Shares 154,438 Value ($000) $31,496 Avg Close $204.43 Range $187.16 - $225.50

Q1 2022

Shares 146,389 Value ($000) $30,830 Avg Close $217.46 Range $192.67 - $249.00

Q4 2021

Shares 149,484 Value ($000) $35,864 Avg Close $257.12 Range $221.72 - $290.76

Q3 2021

Shares 146,929 Value ($000) $41,579 Avg Close $327.75 Range $282.64 - $372.12

Q2 2021

Shares 121,610 Value ($000) $39,733 Avg Close $302.94 Range $257.03 - $468.55

Q1 2021

Shares 133,035 Value ($000) $37,217 Avg Close $269.69 Range $238.40 - $296.38

Q4 2020

Shares 130,822 Value ($000) $32,033 Avg Close $259.08 Range $223.25 - $363.92

Q3 2020

Shares 114,001 Value ($000) $32,340 Avg Close $278.91 Range $261.87 - $312.00

Q2 2020

Shares 89,972 Value ($000) $24,072 Avg Close $300.59 Range $257.60 - $350.24

Q1 2020

Shares 125,168 Value ($000) $39,601 Avg Close $303.47 Range $262.25 - $374.99

Q4 2019

Shares 95,499 Value ($000) $28,337 Avg Close $277.46 Range $219.70 - $318.00

Q3 2019

Shares 84,143 Value ($000) $19,590 Avg Close $232.85 Range $215.78 - $246.99

Q2 2019

Shares 89,013 Value ($000) $20,817 Avg Close $230.90 Range $219.20 - $245.35

Q1 2019

Shares 87,456 Value ($000) $20,673 Avg Close $314.89 Range $216.12 - $344.00

Q4 2018

Shares 109,474 Value ($000) $32,943 Avg Close $319.14 Range $278.46 - $358.41

Q3 2018

Shares 113,022 Value ($000) $39,932 Avg Close $344.30 Range $288.13 - $388.67

Q2 2018

Shares 119,335 Value ($000) $34,636 Avg Close $281.15 Range $249.17 - $310.91

Q1 2018

Shares 156,714 Value ($000) $42,911 Avg Close $310.41 Range $259.76 - $370.57

Q4 2017

Shares 173,710 Value ($000) $55,339 Avg Close $320.80 Range $301.81 - $348.84

Q3 2017

Shares 186,825 Value ($000) $58,499 Avg Close $296.11 Range $269.50 - $330.00

Q2 2017

Shares 179,174 Value ($000) $48,621 Avg Close $264.42 Range $244.28 - $291.90

Q1 2017

Shares 189,935 Value ($000) $51,932 Avg Close $282.75 Range $260.50 - $301.42

Q4 2016

Shares 193,725 Value ($000) $54,937 Avg Close $296.43 Range $268.00 - $329.83

Q3 2016

Shares 204,566 Value ($000) $64,035 Avg Close $296.18 Range $240.07 - $333.65

Q2 2016

Shares 196,750 Value ($000) $47,578 Avg Close $263.54 Range $223.02 - $292.69

Q1 2016

Shares 205,208 Value ($000) $53,420 Avg Close $264.15 Range $242.07 - $301.02

Q4 2015

Shares 222,769 Value ($000) $68,245 Avg Close $287.35 Range $254.00 - $311.65

Q3 2015

Shares 210,620 Value ($000) $61,461 Avg Close $330.23 Range $265.00 - $412.24

Q2 2015

Shares 261,020 Value ($000) $105,436 Avg Close $401.33 Range $368.88 - $432.88

Q1 2015

Shares 270,264 Value ($000) $114,116 Avg Close $394.14 Range $334.40 - $480.18

Q4 2014

Shares 286,700 Value ($000) $97,320 Avg Close $323.51 Range $290.85 - $361.93

Q3 2014

Shares 292,536 Value ($000) $96,774 Avg Close $329.72 Range $298.31 - $349.00

Q2 2014

Shares 270,739 Value ($000) $85,367 Avg Close $300.97 Range $272.02 - $322.25

Q1 2014

Shares 279,139 Value ($000) $85,380 Avg Close $317.43 Range $270.62 - $358.89

Q4 2013

Shares 269,665 Value ($000) $75,439 Avg Close $258.65 Range $221.07 - $298.82

Q3 2013

Shares 260,165 Value ($000) $62,637 Avg Close $223.81 Range $203.55 - $248.95

Q2 2013

Shares 264,965 Value ($000) $57,020 Avg Close $213.68 Range $191.80 - $242.64

Period	Shares	Value ($000)	Average Close	Price Range
Q4 2025	135,352	$23,821	$163.37	$138.00 - $185.17
Q3 2025	161,195	$22,580	$135.17	$121.05 - $150.28
Q2 2025	143,027	$17,963	$124.60	$110.04 - $137.32
Q1 2025	284,376	$38,914	$142.96	$128.51 - $157.09
Q4 2024	355,706	$54,395	$168.67	$145.07 - $195.00
Q3 2024	371,001	$72,223	$209.21	$188.78 - $238.00
Q2 2024	380,788	$88,274	$217.32	$189.44 - $237.54
Q1 2024	367,236	$79,187	$234.20	$211.02 - $268.30
Q4 2023	389,984	$100,916	$245.62	$220.86 - $269.43
Q3 2023	281,028	$72,227	$267.47	$251.85 - $287.60
Q2 2023	216,184	$61,580	$297.86	$273.39 - $319.76
Q1 2023	155,859	$43,333	$276.70	$254.80 - $295.90
Q4 2022	159,719	$44,229	$282.44	$250.31 - $311.88
Q3 2022	164,451	$43,462	$212.38	$193.65 - $283.44
Q2 2022	154,438	$31,496	$204.43	$187.16 - $225.50
Q1 2022	146,389	$30,830	$217.46	$192.67 - $249.00
Q4 2021	149,484	$35,864	$257.12	$221.72 - $290.76
Q3 2021	146,929	$41,579	$327.75	$282.64 - $372.12
Q2 2021	121,610	$39,733	$302.94	$257.03 - $468.55
Q1 2021	133,035	$37,217	$269.69	$238.40 - $296.38
Q4 2020	130,822	$32,033	$259.08	$223.25 - $363.92
Q3 2020	114,001	$32,340	$278.91	$261.87 - $312.00
Q2 2020	89,972	$24,072	$300.59	$257.60 - $350.24
Q1 2020	125,168	$39,601	$303.47	$262.25 - $374.99
Q4 2019	95,499	$28,337	$277.46	$219.70 - $318.00
Q3 2019	84,143	$19,590	$232.85	$215.78 - $246.99
Q2 2019	89,013	$20,817	$230.90	$219.20 - $245.35
Q1 2019	87,456	$20,673	$314.89	$216.12 - $344.00
Q4 2018	109,474	$32,943	$319.14	$278.46 - $358.41
Q3 2018	113,022	$39,932	$344.30	$288.13 - $388.67
Q2 2018	119,335	$34,636	$281.15	$249.17 - $310.91
Q1 2018	156,714	$42,911	$310.41	$259.76 - $370.57
Q4 2017	173,710	$55,339	$320.80	$301.81 - $348.84
Q3 2017	186,825	$58,499	$296.11	$269.50 - $330.00
Q2 2017	179,174	$48,621	$264.42	$244.28 - $291.90
Q1 2017	189,935	$51,932	$282.75	$260.50 - $301.42
Q4 2016	193,725	$54,937	$296.43	$268.00 - $329.83
Q3 2016	204,566	$64,035	$296.18	$240.07 - $333.65
Q2 2016	196,750	$47,578	$263.54	$223.02 - $292.69
Q1 2016	205,208	$53,420	$264.15	$242.07 - $301.02
Q4 2015	222,769	$68,245	$287.35	$254.00 - $311.65
Q3 2015	210,620	$61,461	$330.23	$265.00 - $412.24
Q2 2015	261,020	$105,436	$401.33	$368.88 - $432.88
Q1 2015	270,264	$114,116	$394.14	$334.40 - $480.18
Q4 2014	286,700	$97,320	$323.51	$290.85 - $361.93
Q3 2014	292,536	$96,774	$329.72	$298.31 - $349.00
Q2 2014	270,739	$85,367	$300.97	$272.02 - $322.25
Q1 2014	279,139	$85,380	$317.43	$270.62 - $358.89
Q4 2013	269,665	$75,439	$258.65	$221.07 - $298.82
Q3 2013	260,165	$62,637	$223.81	$203.55 - $248.95
Q2 2013	264,965	$57,020	$213.68	$191.80 - $242.64