BIOGEN INC

Ticker: BIIB CUSIP: 09062X103 Class: COM

MILLENNIUM MANAGEMENT LLC's Holding History (CIK: 0001273087)

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

Q4 2025

Shares 1,125,586 Value ($000) $198,092 Avg Close $163.37 Range $138.00 - $185.17

Q3 2025

Shares 1,111,190 Value ($000) $155,655 Avg Close $135.17 Range $121.05 - $150.28

Q2 2025

Shares 675,502 Value ($000) $84,836 Avg Close $124.60 Range $110.04 - $137.32

Q1 2025

Shares 423,997 Value ($000) $58,020 Avg Close $142.96 Range $128.51 - $157.09

Q4 2024

Shares 543,844 Value ($000) $83,165 Avg Close $168.67 Range $145.07 - $195.00

Q3 2024

Shares 398,136 Value ($000) $77,175 Avg Close $209.21 Range $188.78 - $238.00

Q2 2024

Shares 239,847 Value ($000) $55,601 Avg Close $217.32 Range $189.44 - $237.54

Q1 2024

Shares 176,412 Value ($000) $38,040 Avg Close $234.20 Range $211.02 - $268.30

Q4 2023

Shares 4,535 Value ($000) $1,174 Avg Close $245.62 Range $220.86 - $269.43

Q3 2023

Shares 78,144 Value ($000) $20,084 Avg Close $267.47 Range $251.85 - $287.60

Q2 2023

Shares 44,174 Value ($000) $12,583 Avg Close $297.86 Range $273.39 - $319.76

Q1 2023

Shares 513,392 Value ($000) $143 Avg Close $276.70 Range $254.80 - $295.90

Q4 2022

Shares 338,585 Value ($000) $94 Avg Close $282.44 Range $250.31 - $311.88

Q3 2022

Shares 912,705 Value ($000) $243,692 Avg Close $212.38 Range $193.65 - $283.44

Q2 2022

Shares 581,647 Value ($000) $118,621 Avg Close $204.43 Range $187.16 - $225.50

Q1 2022

Shares 604,213 Value ($000) $127,247 Avg Close $217.46 Range $192.67 - $249.00

Q4 2021

Shares 412,888 Value ($000) $99,060 Avg Close $257.12 Range $221.72 - $290.76

Q3 2021

Shares 271,819 Value ($000) $76,922 Avg Close $327.75 Range $282.64 - $372.12

Q2 2021

Shares 307,029 Value ($000) $106,315 Avg Close $302.94 Range $257.03 - $468.55

Q1 2021

Shares 154,758 Value ($000) $43,294 Avg Close $269.69 Range $238.40 - $296.38

Q4 2020

Shares 249,416 Value ($000) $61,072 Avg Close $259.08 Range $223.25 - $363.92

Q3 2020

Shares 277,459 Value ($000) $78,710 Avg Close $278.91 Range $261.87 - $312.00

Q2 2020

Shares 100,120 Value ($000) $26,787 Avg Close $300.59 Range $257.60 - $350.24

Q1 2020

Shares 72,335 Value ($000) $22,885 Avg Close $303.47 Range $262.25 - $374.99

Q4 2019

Shares 519,614 Value ($000) $154,185 Avg Close $277.46 Range $219.70 - $318.00

Q3 2019

Shares 653,728 Value ($000) $152,200 Avg Close $232.85 Range $215.78 - $246.99

Q2 2019

Shares 475,720 Value ($000) $111,257 Avg Close $230.90 Range $219.20 - $245.35

Q1 2019

Shares 107,758 Value ($000) $25,472 Avg Close $314.89 Range $216.12 - $344.00

Q4 2018

Shares 76,842 Value ($000) $23,123 Avg Close $319.14 Range $278.46 - $358.41

Q3 2018

Shares 266,485 Value ($000) $94,152 Avg Close $344.30 Range $288.13 - $388.67

Q2 2018

Shares 155,047 Value ($000) $45,001 Avg Close $281.15 Range $249.17 - $310.91

Q1 2018

Shares 444,048 Value ($000) $121,589 Avg Close $310.41 Range $259.76 - $370.57

Q4 2017

Shares 54,083 Value ($000) $17,229 Avg Close $320.80 Range $301.81 - $348.84

Q3 2017

Shares 187,728 Value ($000) $58,781 Avg Close $296.11 Range $269.50 - $330.00

Q2 2017

Shares 344,279 Value ($000) $93,424 Avg Close $264.42 Range $244.28 - $291.90

Q1 2017

Shares 171,739 Value ($000) $46,957 Avg Close $282.75 Range $260.50 - $301.42

Q4 2016

Shares 487,510 Value ($000) $138,248 Avg Close $296.43 Range $268.00 - $329.83

Q3 2016

Shares 579,937 Value ($000) $181,538 Avg Close $296.18 Range $240.07 - $333.65

Q2 2016

Shares 804,978 Value ($000) $194,660 Avg Close $263.54 Range $223.02 - $292.69

Q1 2016

Shares 830,983 Value ($000) $216,321 Avg Close $264.15 Range $242.07 - $301.02

Q4 2015

Shares 1,050,684 Value ($000) $321,877 Avg Close $287.35 Range $254.00 - $311.65

Q3 2015

Shares 624,834 Value ($000) $182,333 Avg Close $330.23 Range $265.00 - $412.24

Q2 2015

Shares 920,090 Value ($000) $371,661 Avg Close $401.33 Range $368.88 - $432.88

Q1 2015

Shares 480,022 Value ($000) $202,684 Avg Close $394.14 Range $334.40 - $480.18

Q4 2014

Shares 452,704 Value ($000) $153,670 Avg Close $323.51 Range $290.85 - $361.93

Q3 2014

Shares 445,663 Value ($000) $147,430 Avg Close $329.72 Range $298.31 - $349.00

Q2 2014

Shares 93,172 Value ($000) $29,378 Avg Close $300.97 Range $272.02 - $322.25

Q1 2014

Shares 187,081 Value ($000) $57,222 Avg Close $317.43 Range $270.62 - $358.89

Q4 2013

Shares 237,719 Value ($000) $66,460 Avg Close $258.65 Range $221.07 - $298.82

Q3 2013

Shares 14,838 Value ($000) $3,572 Avg Close $223.81 Range $203.55 - $248.95

Q2 2013

Shares 35,691 Value ($000) $7,681 Avg Close $213.68 Range $191.80 - $242.64

Period	Shares	Value ($000)	Average Close	Price Range
Q4 2025	1,125,586	$198,092	$163.37	$138.00 - $185.17
Q3 2025	1,111,190	$155,655	$135.17	$121.05 - $150.28
Q2 2025	675,502	$84,836	$124.60	$110.04 - $137.32
Q1 2025	423,997	$58,020	$142.96	$128.51 - $157.09
Q4 2024	543,844	$83,165	$168.67	$145.07 - $195.00
Q3 2024	398,136	$77,175	$209.21	$188.78 - $238.00
Q2 2024	239,847	$55,601	$217.32	$189.44 - $237.54
Q1 2024	176,412	$38,040	$234.20	$211.02 - $268.30
Q4 2023	4,535	$1,174	$245.62	$220.86 - $269.43
Q3 2023	78,144	$20,084	$267.47	$251.85 - $287.60
Q2 2023	44,174	$12,583	$297.86	$273.39 - $319.76
Q1 2023	513,392	$143	$276.70	$254.80 - $295.90
Q4 2022	338,585	$94	$282.44	$250.31 - $311.88
Q3 2022	912,705	$243,692	$212.38	$193.65 - $283.44
Q2 2022	581,647	$118,621	$204.43	$187.16 - $225.50
Q1 2022	604,213	$127,247	$217.46	$192.67 - $249.00
Q4 2021	412,888	$99,060	$257.12	$221.72 - $290.76
Q3 2021	271,819	$76,922	$327.75	$282.64 - $372.12
Q2 2021	307,029	$106,315	$302.94	$257.03 - $468.55
Q1 2021	154,758	$43,294	$269.69	$238.40 - $296.38
Q4 2020	249,416	$61,072	$259.08	$223.25 - $363.92
Q3 2020	277,459	$78,710	$278.91	$261.87 - $312.00
Q2 2020	100,120	$26,787	$300.59	$257.60 - $350.24
Q1 2020	72,335	$22,885	$303.47	$262.25 - $374.99
Q4 2019	519,614	$154,185	$277.46	$219.70 - $318.00
Q3 2019	653,728	$152,200	$232.85	$215.78 - $246.99
Q2 2019	475,720	$111,257	$230.90	$219.20 - $245.35
Q1 2019	107,758	$25,472	$314.89	$216.12 - $344.00
Q4 2018	76,842	$23,123	$319.14	$278.46 - $358.41
Q3 2018	266,485	$94,152	$344.30	$288.13 - $388.67
Q2 2018	155,047	$45,001	$281.15	$249.17 - $310.91
Q1 2018	444,048	$121,589	$310.41	$259.76 - $370.57
Q4 2017	54,083	$17,229	$320.80	$301.81 - $348.84
Q3 2017	187,728	$58,781	$296.11	$269.50 - $330.00
Q2 2017	344,279	$93,424	$264.42	$244.28 - $291.90
Q1 2017	171,739	$46,957	$282.75	$260.50 - $301.42
Q4 2016	487,510	$138,248	$296.43	$268.00 - $329.83
Q3 2016	579,937	$181,538	$296.18	$240.07 - $333.65
Q2 2016	804,978	$194,660	$263.54	$223.02 - $292.69
Q1 2016	830,983	$216,321	$264.15	$242.07 - $301.02
Q4 2015	1,050,684	$321,877	$287.35	$254.00 - $311.65
Q3 2015	624,834	$182,333	$330.23	$265.00 - $412.24
Q2 2015	920,090	$371,661	$401.33	$368.88 - $432.88
Q1 2015	480,022	$202,684	$394.14	$334.40 - $480.18
Q4 2014	452,704	$153,670	$323.51	$290.85 - $361.93
Q3 2014	445,663	$147,430	$329.72	$298.31 - $349.00
Q2 2014	93,172	$29,378	$300.97	$272.02 - $322.25
Q1 2014	187,081	$57,222	$317.43	$270.62 - $358.89
Q4 2013	237,719	$66,460	$258.65	$221.07 - $298.82
Q3 2013	14,838	$3,572	$223.81	$203.55 - $248.95
Q2 2013	35,691	$7,681	$213.68	$191.80 - $242.64