IBIO INC (IBIO) Institutional Shareholders
IBIO INC (IBIO) is currently reported in institutional portfolios tracked by InsiderSet based on the latest available SEC Form 13F filings for the quarter ended June 30, 2026. The institutional investors covered on this page collectively reported approximately $57.59M in IBIO holdings during the latest filing period.
Affinity Asset Advisors, Llc is currently the largest disclosed institutional shareholder of IBIO tracked by InsiderSet, reporting ownership valued at approximately $7.01M in its June 30, 2026 SEC Form 13F filing. Based on current market prices and the latest disclosed share count, the position is now estimated to be worth approximately $5.13M, representing an estimated loss of -26.86% since the filing period.
The top 10 institutional shareholders tracked on this page collectively account for approximately 72% of the total disclosed IBIO value among the investors covered in this analysis. Major shareholders include Affinity Asset Advisors, Llc, Cormorant Asset Management, Lp, Silverarc Capital Management, Llc, and several other long-term asset managers with concentrated positions in IBIO INC (IBIO).
This page ranks the largest institutional IBIO shareholders using publicly disclosed SEC Form 13F data, including reported values, estimated current holding values, portfolio allocation percentages, ownership concentration metrics, and historical holding changes across major hedge funds and investment firms.
Institutional Holders
53
Total Reported Value
$57.59M
Largest Holder
Affinity Asset Advisors, Llc
Largest Position
$7.01M
Insider Transactions (90d)
0
Latest Filing Quarter
Q2 2026
New Institutional Positions
77
Funds Exiting Positions
0
| Name | Investor/Manager | Portfolio % | Quantity | Reported Balance | Current Estimated Value | Gain/loss Since Filing | Estimated Portfolio Performance |
|---|---|---|---|---|---|---|---|
| Affinity Asset Advisors, Llc | 0.34% | 4,007,881 | $7,013,792 | $5,130,088 | -$1,883,704 | -26.86% | |
| Cormorant Asset Management, Lp | 0.32% | 3,570,000 | $6,247,500 | $4,569,600 | -$1,677,900 | -26.86% | |
| Silverarc Capital Management, Llc | 0.69% | 3,520,490 | $6,160,858 | $4,506,227 | -$1,654,631 | -26.86% | |
| Vestal Point Capital, Lp | 0.11% | 2,600,000 | $4,550,000 | $3,328,000 | -$1,222,000 | -26.86% | |
| Vanguard Capital Management Llc | 0.00% | 2,098,151 | $3,671,764 | $2,685,633 | -$986,131 | -26.86% | |
| Frazier Life Sciences Management, L.P. | 0.07% | 1,953,467 | $3,418,567 | $2,500,438 | -$918,129 | -26.86% | |
| Woodline Partners Lp | 0.01% | 1,776,547 | $3,108,957 | $2,273,980 | -$834,977 | -26.86% | |
| Millennium Management Llc | 0.00% | 1,651,473 | $2,890,078 | $2,113,885 | -$776,193 | -26.86% | |
| Citadel Advisors Llc | 0.00% | 1,384,029 | $2,422,051 | $1,771,557 | -$650,494 | -26.86% | |
| Balyasny Asset Management L.P. | 0.00% | 1,170,893 | $2,049,063 | $1,498,743 | -$550,320 | -26.86% | |
| Bank Of America Corp | 0.00% | 1,121,492 | $1,962,611 | $1,435,510 | -$527,101 | -26.86% | |
| Ikarian Capital, Llc | 0.27% | 957,062 | $1,674,859 | $1,225,039 | -$449,820 | -26.86% | |
| Sio Capital Management, Llc | 0.27% | 904,268 | $1,582,469 | $1,157,463 | -$425,006 | -26.86% | |
| Marshall Wace, Llp | 0.00% | 904,132 | $1,582,233 | $1,157,289 | -$424,944 | -26.86% | |
| Geode Capital Management, Llc | 0.00% | 500,816 | $876,650 | $641,044 | -$235,606 | -26.88% | |
| Walleye Capital Llc | 0.00% | 500,375 | $875,656 | $640,480 | -$235,176 | -26.86% | |
| Squarepoint Ops Llc | 0.00% | 498,872 | $873,026 | $638,556 | -$234,470 | -26.86% | |
| Noesis Capital Mangement Corp | 0.09% | 405,000 | $708,750 | $518,400 | -$190,350 | -26.86% | |
| Two Sigma Investments, Lp | 0.00% | 400,667 | $701,167 | $512,854 | -$188,313 | -26.86% | |
| Ally Bridge Group (Ny) Llc | 0.88% | 390,147 | $682,757 | $499,388 | -$183,369 | -26.86% | |
| Adar1 Capital Management, Llc | 0.03% | 375,531 | $657,179 | $480,680 | -$176,499 | -26.86% | |
| Verdad Advisers, Lp | 0.50% | 298,927 | $523,122 | $382,627 | -$140,495 | -26.86% | |
| Vanguard Fiduciary Trust Co | 0.00% | 286,875 | $502,031 | $367,200 | -$134,831 | -26.86% | |
| Boothbay Fund Management, Llc | 0.01% | 254,412 | $445,221 | $325,647 | -$119,574 | -26.86% | |
| Blackrock, Inc. | 0.00% | 242,016 | $423,528 | $309,780 | -$113,748 | -26.86% | |
| Renaissance Technologies LLC | Jim Simons | 0.00% | 202,847 | $354,982 | $259,644 | -$95,338 | -26.86% |
| Goldman Sachs Group Inc | 0.00% | 200,455 | $350,796 | $256,582 | -$94,214 | -26.86% | |
| State Street Corp | 0.00% | 170,799 | $298,898 | $218,623 | -$80,275 | -26.86% | |
| Dafna Capital Management Llc | 0.06% | 170,053 | $297,593 | $217,668 | -$79,925 | -26.86% | |
| Northern Trust Corp | 0.00% | 111,319 | $194,808 | $142,488 | -$52,320 | -26.86% | |
| Atom Investors Lp | 0.02% | 101,557 | $177,725 | $129,993 | -$47,732 | -26.86% | |
| Xtx Topco Ltd | 0.00% | 57,842 | $101,224 | $74,038 | -$27,186 | -26.86% | |
| Headlands Technologies Llc | 0.01% | 47,413 | $82,973 | $60,689 | -$22,284 | -26.86% | |
| Two Sigma Securities, Llc | 0.00% | 16,151 | $28,264 | $20,673 | -$7,591 | -26.86% | |
| Innovative Asset Advisors Group, Llc | 0.01% | 15,000 | $26,250 | $19,200 | -$7,050 | -26.86% | |
| Spark Investment Management Llc | 0.05% | 13,500 | $23,625 | $17,280 | -$6,345 | -26.86% | |
| Bank Of New York Mellon Corp | 0.00% | 10,637 | $18,614 | $13,615 | -$4,999 | -26.85% | |
| Jpmorgan Chase & Co | 0.00% | 5,897 | $10,201 | $7,548 | -$2,653 | -26.01% | |
| Vanguard Global Advisers, Llc | 0.00% | 5,460 | $9,555 | $6,989 | -$2,566 | -26.86% | |
| Barclays Plc | 0.00% | 3,255 | $5,696 | $4,166 | -$1,530 | -26.85% | |
| Ubs Group Ag | 0.00% | 501 | $877 | $641 | -$236 | -26.88% | |
| Fmr Llc | 0.00% | 433 | $757 | $554 | -$203 | -26.78% | |
| Osaic Holdings, Inc. | 0.00% | 380 | $665 | $486 | -$179 | -26.86% | |
| Wells Fargo & Company/Mn | 0.00% | 101 | $177 | $129 | -$48 | -26.96% | |
| Shp Wealth Management | 0.00% | 60 | $105 | $77 | -$28 | -26.86% | |
| Sbi Securities Co., Ltd. | 0.00% | 42 | $74 | $54 | -$20 | -27.35% | |
| Soa Wealth Advisors, Llc. | 0.00% | 13 | $23 | $17 | -$6 | -27.65% | |
| Morgan Stanley | 0.00% | 10 | $18 | $13 | -$5 | -28.89% | |
| Caitong International Asset Management Co., Ltd | 0.00% | 9 | $16 | $12 | -$4 | -28.00% | |
| Activest Wealth Management | 0.00% | 4 | $7 | $5 | -$2 | -26.86% |
Frequently asked questions about IBIO
Who owns the most IBIO stock?
The largest holders of IBIO are typically major institutional investors such as asset managers and hedge funds reporting on Form 13F. The table above ranks tracked superinvestors by reported position size using the latest available filings for IBIO INC (IBIO).
Is IBIO widely held by superinvestors?
Many widely followed stocks like IBIO appear across numerous superinvestor portfolios because of liquidity, index inclusion, and fundamentals. The holder count and table above show how broadly IBIO is represented among the institutional managers we track.
What do “Current Estimated Value”, “Gain/loss Since Filing”, and “Estimated Portfolio Performance” mean?
Current Estimated Value is reported share quantity from the latest 13F times our most recent split-adjusted U.S. session close. Gain/loss Since Filing is that estimate minus the reported 13F dollar value; Estimated Portfolio Performance is that difference as a percent of the reported value. Green means the estimate is above the filing value; red means below (not purchase cost). If many filers share the same implied filing price per share, the performance % may match across rows. These are not official fund marks or live quotes.