Aigen Investment Management’s Biogen BIIB Stock Holding History

Aigen Investment Management’s Portfolio BIIB Stock Details BIIB Fund Activity

Bought

Maintained

Sold

Quarter	Market Value	Status	Shares	Change in Stake	Trade Value	Portfolio Weight	Portfolio Position
2025 Q2	–	Sell	-14,365	Closed	-$1.97M	–	804
2025 Q1	$1.97M	Buy	+14,365	New	+$2.05M	0.31%	83
2024 Q4	–	Sell	-3,520	Closed	-$682K	–	738
2024 Q3	$682K	Buy	+3,520	New	+$736K	0.13%	225
2024 Q1	–	Sell	-3,108	Closed	-$804K	–	681
2023 Q4	$804K	Buy	+3,108	New	+$763K	0.14%	207
2023 Q3	–	Sell	-2,240	Closed	-$638K	–	828
2023 Q2	$638K	Buy	+2,240	New	+$667K	0.09%	291
2022 Q2	–	Sell	-29,394	Closed	-$6.19M	–	533
2022 Q1	$6.19M	Buy	29,394 +26,412	+886%	+$5.74M	1.07%	8
2021 Q4	$704K	Buy	+2,982	New	+$767K	0.04%	522
2021 Q2	–	Sell	-15,291	Closed	-$4.28M	–	478
2021 Q1	$4.28M	Buy	+15,291	New	+$4.12M	0.57%	43
2020 Q4	–	Sell	-1,406	Closed	-$399K	–	792
2020 Q3	$399K	Buy	+1,406	New	+$392K	0.05%	452

Other funds holding BIIB

Vanguard Group Malvern, Pennsylvania $6.9T AUM 27.45% 1-Year Est. Return

Primecap Management Pasadena, California $127B AUM 44.11% 1-Year Est. Return

BlackRock New York $5.72T AUM 30.48% 1-Year Est. Return

State Street Boston, Massachusetts $2.9T AUM 29.55% 1-Year Est. Return

Wellington Management Group Boston, Massachusetts $535B AUM 26.23% 1-Year Est. Return

Geode Capital Management Boston, Massachusetts $1.61T AUM 30.72% 1-Year Est. Return

Point72 Asset Management Stamford, Connecticut $78.1B AUM 55.25% 1-Year Est. Return

Invesco Atlanta, Georgia $1.02T AUM 30.18% 1-Year Est. Return

Norges Bank Oslo, Norway $935B AUM

Morgan Stanley New York $1.66T AUM 25.57% 1-Year Est. Return

Aigen Investment Management's BIIB Position: Q2 2025 in Review

Aigen Investment Management sold out of Biogen (BIIB) in Q2 2025, closing a stake of 14,365 shares — an estimated $1.97M sold.

Aigen Investment Management first reported a position in BIIB in Q3 2020 and held it in 8 quarters. The position peaked at $6.19M in Q1 2022. 866 funds tracked by Wall St. Rank hold BIIB as of Q2 2025.

Aigen Investment Management reported no remaining Biogen position as of Q2 2025 after selling out during the quarter.
Aigen Investment Management sold 14,365 Biogen shares in Q2 2025, an estimated $1.97M.
Aigen Investment Management first reported a position in Biogen in Q3 2020 and held it in 8 quarters.
Aigen Investment Management's Biogen position peaked at $6.19M in Q1 2022.
866 funds tracked by Wall St. Rank held Biogen as of Q2 2025.

Based on Aigen Investment Management's 13F filing for Q2 2025, filed 12 Aug 2025.