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 Q2	–	Sell	-1,583,000	Closed	-$3.01M	–	37
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 $2.21B AUM 431.26% 1-Year Est. Return

CAM

Cormorant Asset Management Boston, Massachusetts $1.95B AUM 773.9% 1-Year Est. Return

SCM

Silverarc Capital Management Boston, Massachusetts $962M AUM 524.64% 1-Year Est. Return

VPC

Vestal Point Capital New York $4.28B AUM 239% 1-Year Est. Return

Vanguard Capital Management Malvern, Pennsylvania $4.68T AUM

FLSM

Frazier Life Sciences Management Palo Alto, California $4.59B AUM 237.58% 1-Year Est. Return

Ensign Peak Advisors Salt Lake City, Utah $60.8B AUM 42.06% 1-Year Est. Return

Woodline Partners San Francisco, California $32.4B AUM 58.5% 1-Year Est. Return

Millennium Management New York $276B AUM 44.8% 1-Year Est. Return

Citadel Advisors Miami, Florida $875B AUM 40.91% 1-Year Est. Return

EcoR1 Capital's IBIO Position: Q2 2026 in Review

EcoR1 Capital sold out of iBio (IBIO) in Q2 2026, closing a stake of 1,583,000 shares — an estimated $3.01M sold.

EcoR1 Capital first reported a position in IBIO in Q4 2025 and held it in 2 quarters. The position peaked at $4.3M in Q4 2025. 55 funds tracked by Wall St. Rank hold IBIO as of Q2 2026.

EcoR1 Capital reported no remaining iBio position as of Q2 2026 after selling out during the quarter.
EcoR1 Capital sold 1,583,000 iBio shares in Q2 2026, an estimated $3.01M.
EcoR1 Capital first reported a position in iBio in Q4 2025 and held it in 2 quarters.
EcoR1 Capital's iBio position peaked at $4.3M in Q4 2025.
55 funds tracked by Wall St. Rank held iBio as of Q2 2026.

Based on EcoR1 Capital's 13F filing for Q2 2026, filed 14 Aug 2026.