BIOGEN INC

Ticker: BIIB CUSIP: 09062X103 Class: COM

Campbell & CO Investment Adviser LLC's Holding History (CIK: 0001353570)

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

Q3 2025

Shares 2,094 Value ($000) $293 Avg Close $135.17 Range $121.05 - $150.28

Q2 2025

Shares 6,760 Value ($000) $849 Avg Close $124.60 Range $110.04 - $137.32

Q1 2025

Shares 11,573 Value ($000) $1,584 Avg Close $142.96 Range $128.51 - $157.09

Q4 2024

Shares 30,509 Value ($000) $4,665 Avg Close $168.67 Range $145.07 - $195.00

Q3 2024

Shares 16,919 Value ($000) $3,280 Avg Close $209.21 Range $188.78 - $238.00

Q2 2024

Shares 2,796 Value ($000) $648 Avg Close $217.32 Range $189.44 - $237.54

Q3 2023

Shares 2,093 Value ($000) $538 Avg Close $267.47 Range $251.85 - $287.60

Q2 2023

Shares 2,630 Value ($000) $749 Avg Close $297.86 Range $273.39 - $319.76

Q1 2023

Shares 827 Value ($000) $230 Avg Close $276.70 Range $254.80 - $295.90

Q4 2022

Shares 5,675 Value ($000) $1,572 Avg Close $282.44 Range $250.31 - $311.88

Q3 2022

Shares 5,953 Value ($000) $1,589 Avg Close $212.38 Range $193.65 - $283.44

Q2 2022

Shares 4,201 Value ($000) $857 Avg Close $204.43 Range $187.16 - $225.50

Q1 2022

Shares 2,992 Value ($000) $630 Avg Close $217.46 Range $192.67 - $249.00

Q2 2021

Shares 2,600 Value ($000) $900 Avg Close $302.94 Range $257.03 - $468.55

Q2 2020

Shares 1,402 Value ($000) $375 Avg Close $300.59 Range $257.60 - $350.24

Q4 2019

Shares 3,311 Value ($000) $982 Avg Close $277.46 Range $219.70 - $318.00

Q3 2019

Shares 1,149 Value ($000) $268 Avg Close $232.85 Range $215.78 - $246.99

Q2 2019

Shares 1,076 Value ($000) $252 Avg Close $230.90 Range $219.20 - $245.35

Q3 2018

Shares 762 Value ($000) $269 Avg Close $344.30 Range $288.13 - $388.67

Q1 2018

Shares 762 Value ($000) $209 Avg Close $310.41 Range $259.76 - $370.57

Q2 2017

Shares 3,490 Value ($000) $947 Avg Close $264.42 Range $244.28 - $291.90

Q4 2013

Shares 4,598 Value ($000) $1,285 Avg Close $258.65 Range $221.07 - $298.82

Q2 2013

Shares 5,035 Value ($000) $1,084 Avg Close $213.68 Range $191.80 - $242.64

Period	Shares	Value ($000)	Average Close	Price Range
Q3 2025	2,094	$293	$135.17	$121.05 - $150.28
Q2 2025	6,760	$849	$124.60	$110.04 - $137.32
Q1 2025	11,573	$1,584	$142.96	$128.51 - $157.09
Q4 2024	30,509	$4,665	$168.67	$145.07 - $195.00
Q3 2024	16,919	$3,280	$209.21	$188.78 - $238.00
Q2 2024	2,796	$648	$217.32	$189.44 - $237.54
Q3 2023	2,093	$538	$267.47	$251.85 - $287.60
Q2 2023	2,630	$749	$297.86	$273.39 - $319.76
Q1 2023	827	$230	$276.70	$254.80 - $295.90
Q4 2022	5,675	$1,572	$282.44	$250.31 - $311.88
Q3 2022	5,953	$1,589	$212.38	$193.65 - $283.44
Q2 2022	4,201	$857	$204.43	$187.16 - $225.50
Q1 2022	2,992	$630	$217.46	$192.67 - $249.00
Q2 2021	2,600	$900	$302.94	$257.03 - $468.55
Q2 2020	1,402	$375	$300.59	$257.60 - $350.24
Q4 2019	3,311	$982	$277.46	$219.70 - $318.00
Q3 2019	1,149	$268	$232.85	$215.78 - $246.99
Q2 2019	1,076	$252	$230.90	$219.20 - $245.35
Q3 2018	762	$269	$344.30	$288.13 - $388.67
Q1 2018	762	$209	$310.41	$259.76 - $370.57
Q2 2017	3,490	$947	$264.42	$244.28 - $291.90
Q4 2013	4,598	$1,285	$258.65	$221.07 - $298.82
Q2 2013	5,035	$1,084	$213.68	$191.80 - $242.64