EC
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EcoR1 Capital’s iBio IBIO Stock Holding History

EcoR1 Capital’s Portfolio IBIO Stock Details IBIO Fund Activity
Bought
Maintained
Sold
Quarter Market Value Status Shares Change in
Stake 		Trade Value Portfolio Weight Portfolio Position
2026
Q1 		$3.01M Sell
1,583,000
-645,000
-29% -$1.5M 0.13% 27
2025
Q4 		$4.3M Buy
+2,228,000
New +$3.04M 0.2% 26

Other funds holding IBIO

AAA
Affinity Asset Advisors New York $1.71B AUM 374.45% 1-Year Est. Return
FLSM
Frazier Life Sciences Management Palo Alto, California $3.89B AUM 201.1% 1-Year Est. Return
Millennium Management
Millennium Management New York $134B AUM 35.51% 1-Year Est. Return
LGM
Logos Global Management San Francisco, California $1.94B AUM 444.09% 1-Year Est. Return
VCM
Vanguard Capital Management Malvern, Pennsylvania $4.04T AUM
Balyasny Asset Management
Balyasny Asset Management Chicago, Illinois $50.9B AUM 42.89% 1-Year Est. Return
IC
Ikarian Capital Dallas, Texas $699M AUM 600.17% 1-Year Est. Return
Citadel Advisors
Citadel Advisors Miami, Florida $141B AUM 30.34% 1-Year Est. Return
SCM
Sio Capital Management New York $694M AUM 79.73% 1-Year Est. Return
Marshall Wace
Marshall Wace London, United Kingdom $93.4B AUM 35.1% 1-Year Est. Return