BIOGEN INC

Ticker: BIIB CUSIP: 09062X103 Class: COM

ProShare Advisors LLC's Holding History (CIK: 0001357955)

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

Q4 2025

Shares 41,496 Value ($000) $7,303 Avg Close $163.37 Range $138.00 - $185.17

Q3 2025

Shares 197,164 Value ($000) $27,619 Avg Close $135.17 Range $121.05 - $150.28

Q2 2025

Shares 238,558 Value ($000) $29,960 Avg Close $124.60 Range $110.04 - $137.32

Q1 2025

Shares 224,655 Value ($000) $30,742 Avg Close $142.96 Range $128.51 - $157.09

Q4 2024

Shares 198,326 Value ($000) $30,328 Avg Close $168.67 Range $145.07 - $195.00

Q3 2024

Shares 169,032 Value ($000) $32,765 Avg Close $209.21 Range $188.78 - $238.00

Q2 2024

Shares 157,628 Value ($000) $36,541 Avg Close $217.32 Range $189.44 - $237.54

Q1 2024

Shares 174,000 Value ($000) $37,520 Avg Close $234.20 Range $211.02 - $268.30

Q4 2023

Shares 144,110 Value ($000) $37,291 Avg Close $245.62 Range $220.86 - $269.43

Q3 2023

Shares 168,401 Value ($000) $43,281 Avg Close $267.47 Range $251.85 - $287.60

Q2 2023

Shares 149,594 Value ($000) $42,612 Avg Close $297.86 Range $273.39 - $319.76

Q1 2023

Shares 157,923 Value ($000) $43,907 Avg Close $276.70 Range $254.80 - $295.90

Q4 2022

Shares 141,574 Value ($000) $39,205 Avg Close $282.44 Range $250.31 - $311.88

Q3 2022

Shares 156,238 Value ($000) $41,715 Avg Close $212.38 Range $193.65 - $283.44

Q2 2022

Shares 187,664 Value ($000) $38,272 Avg Close $204.43 Range $187.16 - $225.50

Q1 2022

Shares 280,848 Value ($000) $59,147 Avg Close $217.46 Range $192.67 - $249.00

Q4 2021

Shares 295,682 Value ($000) $70,940 Avg Close $257.12 Range $221.72 - $290.76

Q3 2021

Shares 213,991 Value ($000) $60,557 Avg Close $327.75 Range $282.64 - $372.12

Q2 2021

Shares 193,263 Value ($000) $66,921 Avg Close $302.94 Range $257.03 - $468.55

Q1 2021

Shares 201,277 Value ($000) $56,307 Avg Close $269.69 Range $238.40 - $296.38

Q4 2020

Shares 177,939 Value ($000) $43,570 Avg Close $259.08 Range $223.25 - $363.92

Q3 2020

Shares 157,169 Value ($000) $44,586 Avg Close $278.91 Range $261.87 - $312.00

Q2 2020

Shares 138,589 Value ($000) $37,079 Avg Close $300.59 Range $257.60 - $350.24

Q1 2020

Shares 138,997 Value ($000) $43,976 Avg Close $303.47 Range $262.25 - $374.99

Q4 2019

Shares 200,281 Value ($000) $59,429 Avg Close $277.46 Range $219.70 - $318.00

Q3 2019

Shares 179,738 Value ($000) $41,847 Avg Close $232.85 Range $215.78 - $246.99

Q2 2019

Shares 182,259 Value ($000) $42,625 Avg Close $230.90 Range $219.20 - $245.35

Q1 2019

Shares 218,149 Value ($000) $51,566 Avg Close $314.89 Range $216.12 - $344.00

Q4 2018

Shares 218,797 Value ($000) $65,840 Avg Close $319.14 Range $278.46 - $358.41

Q3 2018

Shares 198,694 Value ($000) $70,201 Avg Close $344.30 Range $288.13 - $388.67

Q2 2018

Shares 230,808 Value ($000) $66,990 Avg Close $281.15 Range $249.17 - $310.91

Q1 2018

Shares 253,999 Value ($000) $69,550 Avg Close $310.41 Range $259.76 - $370.57

Q4 2017

Shares 221,623 Value ($000) $70,602 Avg Close $320.80 Range $301.81 - $348.84

Q3 2017

Shares 188,490 Value ($000) $59,020 Avg Close $296.11 Range $269.50 - $330.00

Q2 2017

Shares 185,180 Value ($000) $50,250 Avg Close $264.42 Range $244.28 - $291.90

Q1 2017

Shares 164,623 Value ($000) $45,011 Avg Close $282.75 Range $260.50 - $301.42

Q4 2016

Shares 175,244 Value ($000) $49,696 Avg Close $296.43 Range $268.00 - $329.83

Q3 2016

Shares 152,407 Value ($000) $47,708 Avg Close $296.18 Range $240.07 - $333.65

Q2 2016

Shares 204,246 Value ($000) $49,391 Avg Close $263.54 Range $223.02 - $292.69

Q1 2016

Shares 203,240 Value ($000) $52,907 Avg Close $264.15 Range $242.07 - $301.02

Q4 2015

Shares 275,612 Value ($000) $84,434 Avg Close $287.35 Range $254.00 - $311.65

Q3 2015

Shares 256,350 Value ($000) $74,805 Avg Close $330.23 Range $265.00 - $412.24

Q2 2015

Shares 218,087 Value ($000) $88,094 Avg Close $401.33 Range $368.88 - $432.88

Q1 2015

Shares 237,045 Value ($000) $100,090 Avg Close $394.14 Range $334.40 - $480.18

Q4 2014

Shares 239,024 Value ($000) $81,137 Avg Close $323.51 Range $290.85 - $361.93

Q3 2014

Shares 160,151 Value ($000) $52,980 Avg Close $329.72 Range $298.31 - $349.00

Q2 2014

Shares 158,811 Value ($000) $50,075 Avg Close $300.97 Range $272.02 - $322.25

Q1 2014

Shares 188,998 Value ($000) $57,809 Avg Close $317.43 Range $270.62 - $358.89

Q4 2013

Shares 140,941 Value ($000) $39,428 Avg Close $258.65 Range $221.07 - $298.82

Q3 2013

Shares 94,575 Value ($000) $22,770 Avg Close $223.81 Range $203.55 - $248.95

Q2 2013

Shares 96,200 Value ($000) $20,702 Avg Close $213.68 Range $191.80 - $242.64

Period	Shares	Value ($000)	Average Close	Price Range
Q4 2025	41,496	$7,303	$163.37	$138.00 - $185.17
Q3 2025	197,164	$27,619	$135.17	$121.05 - $150.28
Q2 2025	238,558	$29,960	$124.60	$110.04 - $137.32
Q1 2025	224,655	$30,742	$142.96	$128.51 - $157.09
Q4 2024	198,326	$30,328	$168.67	$145.07 - $195.00
Q3 2024	169,032	$32,765	$209.21	$188.78 - $238.00
Q2 2024	157,628	$36,541	$217.32	$189.44 - $237.54
Q1 2024	174,000	$37,520	$234.20	$211.02 - $268.30
Q4 2023	144,110	$37,291	$245.62	$220.86 - $269.43
Q3 2023	168,401	$43,281	$267.47	$251.85 - $287.60
Q2 2023	149,594	$42,612	$297.86	$273.39 - $319.76
Q1 2023	157,923	$43,907	$276.70	$254.80 - $295.90
Q4 2022	141,574	$39,205	$282.44	$250.31 - $311.88
Q3 2022	156,238	$41,715	$212.38	$193.65 - $283.44
Q2 2022	187,664	$38,272	$204.43	$187.16 - $225.50
Q1 2022	280,848	$59,147	$217.46	$192.67 - $249.00
Q4 2021	295,682	$70,940	$257.12	$221.72 - $290.76
Q3 2021	213,991	$60,557	$327.75	$282.64 - $372.12
Q2 2021	193,263	$66,921	$302.94	$257.03 - $468.55
Q1 2021	201,277	$56,307	$269.69	$238.40 - $296.38
Q4 2020	177,939	$43,570	$259.08	$223.25 - $363.92
Q3 2020	157,169	$44,586	$278.91	$261.87 - $312.00
Q2 2020	138,589	$37,079	$300.59	$257.60 - $350.24
Q1 2020	138,997	$43,976	$303.47	$262.25 - $374.99
Q4 2019	200,281	$59,429	$277.46	$219.70 - $318.00
Q3 2019	179,738	$41,847	$232.85	$215.78 - $246.99
Q2 2019	182,259	$42,625	$230.90	$219.20 - $245.35
Q1 2019	218,149	$51,566	$314.89	$216.12 - $344.00
Q4 2018	218,797	$65,840	$319.14	$278.46 - $358.41
Q3 2018	198,694	$70,201	$344.30	$288.13 - $388.67
Q2 2018	230,808	$66,990	$281.15	$249.17 - $310.91
Q1 2018	253,999	$69,550	$310.41	$259.76 - $370.57
Q4 2017	221,623	$70,602	$320.80	$301.81 - $348.84
Q3 2017	188,490	$59,020	$296.11	$269.50 - $330.00
Q2 2017	185,180	$50,250	$264.42	$244.28 - $291.90
Q1 2017	164,623	$45,011	$282.75	$260.50 - $301.42
Q4 2016	175,244	$49,696	$296.43	$268.00 - $329.83
Q3 2016	152,407	$47,708	$296.18	$240.07 - $333.65
Q2 2016	204,246	$49,391	$263.54	$223.02 - $292.69
Q1 2016	203,240	$52,907	$264.15	$242.07 - $301.02
Q4 2015	275,612	$84,434	$287.35	$254.00 - $311.65
Q3 2015	256,350	$74,805	$330.23	$265.00 - $412.24
Q2 2015	218,087	$88,094	$401.33	$368.88 - $432.88
Q1 2015	237,045	$100,090	$394.14	$334.40 - $480.18
Q4 2014	239,024	$81,137	$323.51	$290.85 - $361.93
Q3 2014	160,151	$52,980	$329.72	$298.31 - $349.00
Q2 2014	158,811	$50,075	$300.97	$272.02 - $322.25
Q1 2014	188,998	$57,809	$317.43	$270.62 - $358.89
Q4 2013	140,941	$39,428	$258.65	$221.07 - $298.82
Q3 2013	94,575	$22,770	$223.81	$203.55 - $248.95
Q2 2013	96,200	$20,702	$213.68	$191.80 - $242.64