Ikarian Capital’s Biogen BIIB Stock Holding History

Ikarian Capital’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 Q3	–	Sell	-21,516	Closed	-$2.7M	–	174
2025 Q2	$2.7M	Buy	+21,516	New	+$2.68M	0.52%	56
2023 Q2	–	Sell	-962	Closed	-$267K	–	138
2023 Q1	$267K	Hold	962	–	–	0.06%	103
2022 Q4	$266K	Sell	962 -10,000	-91%	-$2.82M	0.06%	70
2022 Q3	$2.93M	Buy	10,962 +9,840	+877%	+$2.09M	0.58%	52
2022 Q2	$228K	Hold	1,122	–	–	0.04%	115
2022 Q1	$237K	Sell	1,122 -28,411	-96%	-$6.18M	0.03%	160
2021 Q4	$7.09M	Sell	29,533 -2,710	-8%	-$697K	1.06%	25
2021 Q3	$9.12M	Sell	32,243 -93,719	-74%	-$30.7M	0.64%	43
2021 Q2	$43.6M	Buy	125,962 +120,262	+2,110%	+$36.4M	3.53%	4
2021 Q1	$1.59M	Hold	5,700	–	–	0.05%	217
2020 Q4	$1.4M	Buy	5,700 +2,700	+90%	+$697K	0.06%	167
2020 Q3	$852K	Buy	3,000 +2,205	+277%	+$615K	0.06%	130
2020 Q2	$213K	Hold	795	–	–	0.02%	147
2020 Q1	$252K	Buy	+795	New	+$241K	0.02%	144

Other funds holding BIIB

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

Primecap Management

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

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

Geode Capital Management

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

Point72 Asset Management

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

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

AQR Capital Management

AQR Capital Management Greenwich, Connecticut $218B AUM 29.41% 1-Year Est. Return