BIOGEN INC

Ticker: BIIB CUSIP: 09062X103 Class: COM

STIFEL FINANCIAL CORP's Holding History (CIK: 0000720672)

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

Q4 2025

Shares 51,246 Value ($000) $9,019 Avg Close $163.37 Range $138.00 - $185.17

Q3 2025

Shares 37,591 Value ($000) $5,266 Avg Close $135.17 Range $121.05 - $150.28

Q2 2025

Shares 11,114 Value ($000) $1,396 Avg Close $124.60 Range $110.04 - $137.32

Q1 2025

Shares 19,076 Value ($000) $2,610 Avg Close $142.96 Range $128.51 - $157.09

Q4 2024

Shares 12,756 Value ($000) $1,951 Avg Close $168.67 Range $145.07 - $195.00

Q3 2024

Shares 47,554 Value ($000) $9,218 Avg Close $209.21 Range $188.78 - $238.00

Q2 2024

Shares 46,686 Value ($000) $10,823 Avg Close $217.32 Range $189.44 - $237.54

Q1 2024

Shares 59,475 Value ($000) $12,825 Avg Close $234.20 Range $211.02 - $268.30

Q4 2023

Shares 51,648 Value ($000) $13,365 Avg Close $245.62 Range $220.86 - $269.43

Q3 2023

Shares 55,727 Value ($000) $14,322 Avg Close $267.47 Range $251.85 - $287.60

Q2 2023

Shares 45,918 Value ($000) $13,080 Avg Close $297.86 Range $273.39 - $319.76

Q1 2023

Shares 39,705 Value ($000) $11,039 Avg Close $276.70 Range $254.80 - $295.90

Q4 2022

Shares 41,536 Value ($000) $11,502 Avg Close $282.44 Range $250.31 - $311.88

Q3 2022

Shares 36,137 Value ($000) $9,648 Avg Close $212.38 Range $193.65 - $283.44

Q2 2022

Shares 38,076 Value ($000) $7,764 Avg Close $204.43 Range $187.16 - $225.50

Q1 2022

Shares 44,995 Value ($000) $9,477 Avg Close $217.46 Range $192.67 - $249.00

Q4 2021

Shares 43,825 Value ($000) $10,514 Avg Close $257.12 Range $221.72 - $290.76

Q3 2021

Shares 47,245 Value ($000) $13,370 Avg Close $327.75 Range $282.64 - $372.12

Q2 2021

Shares 49,935 Value ($000) $17,290 Avg Close $302.94 Range $257.03 - $468.55

Q1 2021

Shares 60,271 Value ($000) $16,860 Avg Close $269.69 Range $238.40 - $296.38

Q4 2020

Shares 53,146 Value ($000) $13,012 Avg Close $259.08 Range $223.25 - $363.92

Q3 2020

Shares 52,428 Value ($000) $14,873 Avg Close $278.91 Range $261.87 - $312.00

Q2 2020

Shares 54,246 Value ($000) $14,513 Avg Close $300.59 Range $257.60 - $350.24

Q1 2020

Shares 56,362 Value ($000) $17,857 Avg Close $303.47 Range $262.25 - $374.99

Q4 2019

Shares 128,903 Value ($000) $38,168 Avg Close $277.46 Range $219.70 - $318.00

Q3 2019

Shares 81,312 Value ($000) $18,916 Avg Close $232.85 Range $215.78 - $246.99

Q2 2019

Shares 152,087 Value ($000) $35,576 Avg Close $230.90 Range $219.20 - $245.35

Q1 2019

Shares 184,347 Value ($000) $43,490 Avg Close $314.89 Range $216.12 - $344.00

Q4 2018

Shares 242,942 Value ($000) $73,327 Avg Close $319.14 Range $278.46 - $358.41

Q3 2018

Shares 240,258 Value ($000) $84,702 Avg Close $344.30 Range $288.13 - $388.67

Q2 2018

Shares 221,655 Value ($000) $64,172 Avg Close $281.15 Range $249.17 - $310.91

Q1 2018

Shares 207,841 Value ($000) $56,807 Avg Close $310.41 Range $259.76 - $370.57

Q4 2017

Shares 189,558 Value ($000) $60,528 Avg Close $320.80 Range $301.81 - $348.84

Q3 2017

Shares 177,094 Value ($000) $55,594 Avg Close $296.11 Range $269.50 - $330.00

Q2 2017

Shares 148,278 Value ($000) $40,169 Avg Close $264.42 Range $244.28 - $291.90

Q1 2017

Shares 113,286 Value ($000) $30,951 Avg Close $282.75 Range $260.50 - $301.42

Q4 2016

Shares 101,306 Value ($000) $28,743 Avg Close $296.43 Range $268.00 - $329.83

Q3 2016

Shares 86,591 Value ($000) $27,138 Avg Close $296.18 Range $240.07 - $333.65

Q2 2016

Shares 93,863 Value ($000) $22,700 Avg Close $263.54 Range $223.02 - $292.69

Q1 2016

Shares 104,137 Value ($000) $27,097 Avg Close $264.15 Range $242.07 - $301.02

Q4 2015

Shares 151,666 Value ($000) $46,459 Avg Close $287.35 Range $254.00 - $311.65

Q3 2015

Shares 151,672 Value ($000) $44,257 Avg Close $330.23 Range $265.00 - $412.24

Q2 2015

Shares 143,195 Value ($000) $57,795 Avg Close $401.33 Range $368.88 - $432.88

Q1 2015

Shares 136,741 Value ($000) $57,736 Avg Close $394.14 Range $334.40 - $480.18

Q4 2014

Shares 150,819 Value ($000) $51,194 Avg Close $323.51 Range $290.85 - $361.93

Q3 2014

Shares 145,083 Value ($000) $47,994 Avg Close $329.72 Range $298.31 - $349.00

Q2 2014

Shares 146,768 Value ($000) $46,277 Avg Close $300.97 Range $272.02 - $322.25

Q1 2014

Shares 149,421 Value ($000) $45,703 Avg Close $317.43 Range $270.62 - $358.89

Period	Shares	Value ($000)	Average Close	Price Range
Q4 2025	51,246	$9,019	$163.37	$138.00 - $185.17
Q3 2025	37,591	$5,266	$135.17	$121.05 - $150.28
Q2 2025	11,114	$1,396	$124.60	$110.04 - $137.32
Q1 2025	19,076	$2,610	$142.96	$128.51 - $157.09
Q4 2024	12,756	$1,951	$168.67	$145.07 - $195.00
Q3 2024	47,554	$9,218	$209.21	$188.78 - $238.00
Q2 2024	46,686	$10,823	$217.32	$189.44 - $237.54
Q1 2024	59,475	$12,825	$234.20	$211.02 - $268.30
Q4 2023	51,648	$13,365	$245.62	$220.86 - $269.43
Q3 2023	55,727	$14,322	$267.47	$251.85 - $287.60
Q2 2023	45,918	$13,080	$297.86	$273.39 - $319.76
Q1 2023	39,705	$11,039	$276.70	$254.80 - $295.90
Q4 2022	41,536	$11,502	$282.44	$250.31 - $311.88
Q3 2022	36,137	$9,648	$212.38	$193.65 - $283.44
Q2 2022	38,076	$7,764	$204.43	$187.16 - $225.50
Q1 2022	44,995	$9,477	$217.46	$192.67 - $249.00
Q4 2021	43,825	$10,514	$257.12	$221.72 - $290.76
Q3 2021	47,245	$13,370	$327.75	$282.64 - $372.12
Q2 2021	49,935	$17,290	$302.94	$257.03 - $468.55
Q1 2021	60,271	$16,860	$269.69	$238.40 - $296.38
Q4 2020	53,146	$13,012	$259.08	$223.25 - $363.92
Q3 2020	52,428	$14,873	$278.91	$261.87 - $312.00
Q2 2020	54,246	$14,513	$300.59	$257.60 - $350.24
Q1 2020	56,362	$17,857	$303.47	$262.25 - $374.99
Q4 2019	128,903	$38,168	$277.46	$219.70 - $318.00
Q3 2019	81,312	$18,916	$232.85	$215.78 - $246.99
Q2 2019	152,087	$35,576	$230.90	$219.20 - $245.35
Q1 2019	184,347	$43,490	$314.89	$216.12 - $344.00
Q4 2018	242,942	$73,327	$319.14	$278.46 - $358.41
Q3 2018	240,258	$84,702	$344.30	$288.13 - $388.67
Q2 2018	221,655	$64,172	$281.15	$249.17 - $310.91
Q1 2018	207,841	$56,807	$310.41	$259.76 - $370.57
Q4 2017	189,558	$60,528	$320.80	$301.81 - $348.84
Q3 2017	177,094	$55,594	$296.11	$269.50 - $330.00
Q2 2017	148,278	$40,169	$264.42	$244.28 - $291.90
Q1 2017	113,286	$30,951	$282.75	$260.50 - $301.42
Q4 2016	101,306	$28,743	$296.43	$268.00 - $329.83
Q3 2016	86,591	$27,138	$296.18	$240.07 - $333.65
Q2 2016	93,863	$22,700	$263.54	$223.02 - $292.69
Q1 2016	104,137	$27,097	$264.15	$242.07 - $301.02
Q4 2015	151,666	$46,459	$287.35	$254.00 - $311.65
Q3 2015	151,672	$44,257	$330.23	$265.00 - $412.24
Q2 2015	143,195	$57,795	$401.33	$368.88 - $432.88
Q1 2015	136,741	$57,736	$394.14	$334.40 - $480.18
Q4 2014	150,819	$51,194	$323.51	$290.85 - $361.93
Q3 2014	145,083	$47,994	$329.72	$298.31 - $349.00
Q2 2014	146,768	$46,277	$300.97	$272.02 - $322.25
Q1 2014	149,421	$45,703	$317.43	$270.62 - $358.89