JO
IBIO icon

John Overdeck’s iBio IBIO Stock Holding History

John Overdeck’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 		$701K Sell
400,667
-8,191
-2% -$14.6K ﹤0.01% 3896
2026
Q1 		$777K Sell
408,858
-47,475
-10% -$110K ﹤0.01% 3439
2025
Q4 		$881K Buy
+456,333
New +$623K ﹤0.01% 3009
2025
Q2 		– Sell
-13,484
Closed -$54.2K – 3335
2025
Q1 		$54.2K Buy
+13,484
New +$52.4K ﹤0.01% 3038
2023
Q1 		– Sell
-2,673
Closed -$23.8K – 3067
2022
Q4 		$23.8K Buy
+2,673
New +$90.4K ﹤0.01% 2662

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 40.91% 1-Year Est. Return

John Overdeck's IBIO Position: Q2 2026 in Review

John Overdeck reduced its iBio (IBIO) stake by 2% in Q2 2026, selling an estimated $14.6K and leaving 400,667 shares worth $701K. The position accounts for ﹤0.01% of the portfolio, ranked #3896.

John Overdeck first reported a position in IBIO in Q4 2022 and has held it in 5 quarters since. The position peaked at $881K in Q4 2025. 55 funds tracked by Wall St. Rank hold IBIO as of Q2 2026.

  • John Overdeck held 400,667 shares of iBio worth $701K as of Q2 2026.
  • John Overdeck sold 8,191 iBio shares in Q2 2026, an estimated $14.6K.
  • iBio made up ﹤0.01% of John Overdeck's portfolio in Q2 2026, its #3896 holding.
  • John Overdeck first reported a position in iBio in Q4 2022 and has held it in 5 quarters since.
  • John Overdeck's iBio position peaked at $881K in Q4 2025.
  • 55 funds tracked by Wall St. Rank held iBio as of Q2 2026.

Based on Two Sigma Investments's 13F filing for Q2 2026, filed 14 Aug 2026.