BIOGEN INC

Ticker: BIIB CUSIP: 09062X103 Class: COM

JANE STREET GROUP, LLC's Holding History (CIK: 0001595888)

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

Q4 2025

Shares 23,539 Value ($000) $4,143 Avg Close $163.37 Range $138.00 - $185.17

Q3 2025

Shares 5,340 Value ($000) $748 Avg Close $135.17 Range $121.05 - $150.28

Q2 2025

Shares 33,041 Value ($000) $4,150 Avg Close $124.60 Range $110.04 - $137.32

Q1 2025

Shares 37,254 Value ($000) $5,098 Avg Close $142.96 Range $128.51 - $157.09

Q4 2024

Shares 202,638 Value ($000) $30,987 Avg Close $168.67 Range $145.07 - $195.00

Q3 2024

Shares 110,289 Value ($000) $21,378 Avg Close $209.21 Range $188.78 - $238.00

Q2 2024

Shares 178,166 Value ($000) $41,302 Avg Close $217.32 Range $189.44 - $237.54

Q1 2024

Shares 85,994 Value ($000) $18,543 Avg Close $234.20 Range $211.02 - $268.30

Q4 2023

Shares 204,688 Value ($000) $52,967 Avg Close $245.62 Range $220.86 - $269.43

Q3 2023

Shares 46,854 Value ($000) $12,042 Avg Close $267.47 Range $251.85 - $287.60

Q2 2023

Shares 134,913 Value ($000) $38,430 Avg Close $297.86 Range $273.39 - $319.76

Q1 2023

Shares 49,910 Value ($000) $13,876 Avg Close $276.70 Range $254.80 - $295.90

Q4 2022

Shares 207,581 Value ($000) $57,483 Avg Close $282.44 Range $250.31 - $311.88

Q3 2022

Shares 304,540 Value ($000) $81,312 Avg Close $212.38 Range $193.65 - $283.44

Q2 2022

Shares 189,710 Value ($000) $38,690 Avg Close $204.43 Range $187.16 - $225.50

Q1 2022

Shares 183,483 Value ($000) $38,641 Avg Close $217.46 Range $192.67 - $249.00

Q4 2021

Shares 160,491 Value ($000) $38,505 Avg Close $257.12 Range $221.72 - $290.76

Q3 2021

Shares 94,170 Value ($000) $26,649 Avg Close $327.75 Range $282.64 - $372.12

Q2 2021

Shares 82,686 Value ($000) $28,632 Avg Close $302.94 Range $257.03 - $468.55

Q1 2021

Shares 122,695 Value ($000) $34,324 Avg Close $269.69 Range $238.40 - $296.38

Q4 2020

Shares 244,811 Value ($000) $59,945 Avg Close $259.08 Range $223.25 - $363.92

Q3 2020

Shares 115,757 Value ($000) $32,838 Avg Close $278.91 Range $261.87 - $312.00

Q2 2020

Shares 159,347 Value ($000) $42,633 Avg Close $300.59 Range $257.60 - $350.24

Q1 2020

Shares 31,432 Value ($000) $9,944 Avg Close $303.47 Range $262.25 - $374.99

Q4 2019

Shares 48,821 Value ($000) $14,487 Avg Close $277.46 Range $219.70 - $318.00

Q3 2019

Shares 69,481 Value ($000) $16,176 Avg Close $232.85 Range $215.78 - $246.99

Q2 2019

Shares 66,879 Value ($000) $15,641 Avg Close $230.90 Range $219.20 - $245.35

Q1 2019

Shares 115,352 Value ($000) $27,267 Avg Close $314.89 Range $216.12 - $344.00

Q4 2018

Shares 14,072 Value ($000) $4,234 Avg Close $319.14 Range $278.46 - $358.41

Q3 2018

Shares 47,557 Value ($000) $16,802 Avg Close $344.30 Range $288.13 - $388.67

Q2 2018

Shares 28,177 Value ($000) $8,178 Avg Close $281.15 Range $249.17 - $310.91

Q1 2018

Shares 10,000 Value ($000) $2,738 Avg Close $310.41 Range $259.76 - $370.57

Q4 2017

Shares 23,877 Value ($000) $7,607 Avg Close $320.80 Range $301.81 - $348.84

Q3 2017

Shares 24,322 Value ($000) $7,616 Avg Close $296.11 Range $269.50 - $330.00

Q2 2017

Shares 38,681 Value ($000) $10,497 Avg Close $264.42 Range $244.28 - $291.90

Q1 2017

Shares 37,777 Value ($000) $10,329 Avg Close $282.75 Range $260.50 - $301.42

Q4 2016

Shares 10,787 Value ($000) $3,058 Avg Close $296.43 Range $268.00 - $329.83

Q3 2016

Shares 34,522 Value ($000) $10,806 Avg Close $296.18 Range $240.07 - $333.65

Q2 2016

Shares 50,735 Value ($000) $12,268 Avg Close $263.54 Range $223.02 - $292.69

Q1 2016

Shares 23,646 Value ($000) $6,155 Avg Close $264.15 Range $242.07 - $301.02

Q4 2015

Shares 19,276 Value ($000) $5,905 Avg Close $287.35 Range $254.00 - $311.65

Q3 2015

Shares 36,859 Value ($000) $10,756 Avg Close $330.23 Range $265.00 - $412.24

Q2 2015

Shares 10,998 Value ($000) $4,442 Avg Close $401.33 Range $368.88 - $432.88

Q1 2015

Shares 8,429 Value ($000) $3,559 Avg Close $394.14 Range $334.40 - $480.18

Q4 2014

Shares 5,499 Value ($000) $1,867 Avg Close $323.51 Range $290.85 - $361.93

Q3 2014

Shares 871 Value ($000) $288 Avg Close $329.72 Range $298.31 - $349.00

Q2 2014

Shares 1,570 Value ($000) $495 Avg Close $300.97 Range $272.02 - $322.25

Period	Shares	Value ($000)	Average Close	Price Range
Q4 2025	23,539	$4,143	$163.37	$138.00 - $185.17
Q3 2025	5,340	$748	$135.17	$121.05 - $150.28
Q2 2025	33,041	$4,150	$124.60	$110.04 - $137.32
Q1 2025	37,254	$5,098	$142.96	$128.51 - $157.09
Q4 2024	202,638	$30,987	$168.67	$145.07 - $195.00
Q3 2024	110,289	$21,378	$209.21	$188.78 - $238.00
Q2 2024	178,166	$41,302	$217.32	$189.44 - $237.54
Q1 2024	85,994	$18,543	$234.20	$211.02 - $268.30
Q4 2023	204,688	$52,967	$245.62	$220.86 - $269.43
Q3 2023	46,854	$12,042	$267.47	$251.85 - $287.60
Q2 2023	134,913	$38,430	$297.86	$273.39 - $319.76
Q1 2023	49,910	$13,876	$276.70	$254.80 - $295.90
Q4 2022	207,581	$57,483	$282.44	$250.31 - $311.88
Q3 2022	304,540	$81,312	$212.38	$193.65 - $283.44
Q2 2022	189,710	$38,690	$204.43	$187.16 - $225.50
Q1 2022	183,483	$38,641	$217.46	$192.67 - $249.00
Q4 2021	160,491	$38,505	$257.12	$221.72 - $290.76
Q3 2021	94,170	$26,649	$327.75	$282.64 - $372.12
Q2 2021	82,686	$28,632	$302.94	$257.03 - $468.55
Q1 2021	122,695	$34,324	$269.69	$238.40 - $296.38
Q4 2020	244,811	$59,945	$259.08	$223.25 - $363.92
Q3 2020	115,757	$32,838	$278.91	$261.87 - $312.00
Q2 2020	159,347	$42,633	$300.59	$257.60 - $350.24
Q1 2020	31,432	$9,944	$303.47	$262.25 - $374.99
Q4 2019	48,821	$14,487	$277.46	$219.70 - $318.00
Q3 2019	69,481	$16,176	$232.85	$215.78 - $246.99
Q2 2019	66,879	$15,641	$230.90	$219.20 - $245.35
Q1 2019	115,352	$27,267	$314.89	$216.12 - $344.00
Q4 2018	14,072	$4,234	$319.14	$278.46 - $358.41
Q3 2018	47,557	$16,802	$344.30	$288.13 - $388.67
Q2 2018	28,177	$8,178	$281.15	$249.17 - $310.91
Q1 2018	10,000	$2,738	$310.41	$259.76 - $370.57
Q4 2017	23,877	$7,607	$320.80	$301.81 - $348.84
Q3 2017	24,322	$7,616	$296.11	$269.50 - $330.00
Q2 2017	38,681	$10,497	$264.42	$244.28 - $291.90
Q1 2017	37,777	$10,329	$282.75	$260.50 - $301.42
Q4 2016	10,787	$3,058	$296.43	$268.00 - $329.83
Q3 2016	34,522	$10,806	$296.18	$240.07 - $333.65
Q2 2016	50,735	$12,268	$263.54	$223.02 - $292.69
Q1 2016	23,646	$6,155	$264.15	$242.07 - $301.02
Q4 2015	19,276	$5,905	$287.35	$254.00 - $311.65
Q3 2015	36,859	$10,756	$330.23	$265.00 - $412.24
Q2 2015	10,998	$4,442	$401.33	$368.88 - $432.88
Q1 2015	8,429	$3,559	$394.14	$334.40 - $480.18
Q4 2014	5,499	$1,867	$323.51	$290.85 - $361.93
Q3 2014	871	$288	$329.72	$298.31 - $349.00
Q2 2014	1,570	$495	$300.97	$272.02 - $322.25