JY
IBIO icon

Jeff Yass’s iBio IBIO Stock Holding History

Jeff Yass’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
2024
Q1 		– Sell
-37,600
Closed -$51.5K – 12673
2023
Q4 		$51.5K Buy
37,600
+35,720
+1,900% +$156K ﹤0.01% 11703
2023
Q3 		$11.3K Sell
1,880
-45
-2% -$389 ﹤0.01% 11707
2023
Q2 		$23.5K Sell
1,925
-10,465
-84% -$197K ﹤0.01% 11597
2023
Q1 		$515K Buy
12,390
+6,410
+107% +$165K ﹤0.01% 8491
2022
Q4 		$52.6K Buy
5,980
+5,777
+2,846% +$195K ﹤0.01% 11365
2022
Q3 		$17K Sell
203
-159
-44% -$21.9K ﹤0.01% 12651
2022
Q2 		$47K Sell
362
-93
-20% -$14K ﹤0.01% 12011
2022
Q1 		$98K Buy
455
+140
+44% +$29.3K ﹤0.01% 11929
2021
Q4 		$87K Sell
315
-360
-53% -$137K ﹤0.01% 12229
2021
Q3 		$358K Sell
675
-682
-50% -$425K ﹤0.01% 10192
2021
Q2 		$1.02M Buy
1,357
+16
+1% +$11.7K ﹤0.01% 7694
2021
Q1 		$1.03M Buy
1,341
+1,001
+294% +$872K ﹤0.01% 7658
2020
Q4 		$179K Buy
340
+228
+204% +$186K ﹤0.01% 10126
2020
Q3 		$113K Buy
+112
New +$162K ﹤0.01% 9845

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

Jeff Yass's IBIO Position: Q2 2026 in Review

Jeff Yass sold out of iBio (IBIO) in Q2 2026, closing a stake of 412,725 shares — an estimated $784K sold.

Jeff Yass first reported a position in IBIO in Q4 2014 and held it in 20 quarters. The position peaked at $2.3M in Q1 2021. 55 funds tracked by Wall St. Rank hold IBIO as of Q2 2026.

  • Jeff Yass reported no remaining iBio position as of Q2 2026 after selling out during the quarter.
  • Jeff Yass sold 412,725 iBio shares in Q2 2026, an estimated $784K.
  • Jeff Yass first reported a position in iBio in Q4 2014 and held it in 20 quarters.
  • Jeff Yass's iBio position peaked at $2.3M in Q1 2021.
  • 55 funds tracked by Wall St. Rank held iBio as of Q2 2026.

Based on Susquehanna International Group's 13F filing for Q2 2026, filed 14 Aug 2026.