Marshall Wace
IBIO icon

Marshall Wace’s iBio IBIO Stock Holding History

Marshall Wace’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 		$1.58M Buy
904,132
+283,530
+46% +$507K ﹤0.01% 1976
2026
Q1 		$1.18M Buy
620,602
+499,316
+412% +$1.16M ﹤0.01% 2054
2025
Q4 		$234K Buy
+121,286
New +$166K ﹤0.01% 2540
2021
Q3 		– Sell
-341
Closed -$257K – 3202
2021
Q2 		$257K Buy
+341
New +$249K ﹤0.01% 2372

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
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
Ensign Peak Advisors Salt Lake City, Utah $60.8B AUM 42.06% 1-Year Est. Return
WP
Woodline Partners San Francisco, California $32.4B AUM 58.5% 1-Year Est. Return
Millennium Management
Millennium Management New York $276B AUM 44.8% 1-Year Est. Return
Citadel Advisors
Citadel Advisors Miami, Florida $875B AUM 40.89% 1-Year Est. Return

Marshall Wace's IBIO Position: Q2 2026 in Review

Marshall Wace increased its iBio (IBIO) stake by 46% in Q2 2026, buying an estimated $507K and bringing the position to 904,132 shares worth $1.58M. The position accounts for ﹤0.01% of the portfolio, ranked #1976.

Marshall Wace first reported a position in IBIO in Q2 2021 and has held it in 4 quarters since. 55 funds tracked by Wall St. Rank hold IBIO as of Q2 2026.

  • Marshall Wace held 904,132 shares of iBio worth $1.58M as of Q2 2026.
  • Marshall Wace bought 283,530 iBio shares in Q2 2026, an estimated $507K.
  • iBio made up ﹤0.01% of Marshall Wace's portfolio in Q2 2026, its #1976 holding.
  • Marshall Wace first reported a position in iBio in Q2 2021 and has held it in 4 quarters since.
  • 55 funds tracked by Wall St. Rank held iBio as of Q2 2026.

Based on Marshall Wace's 13F filing for Q2 2026, filed 13 Aug 2026.