IBIO INC (IBIO) Top 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 March 31, 2026. The institutional investors covered on this page collectively reported approximately $36.89M 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 $5.90M in its March 31, 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 $4.97M, representing an estimated loss of -15.79% since the filing period.
The top 10 institutional shareholders tracked on this page collectively account for approximately 74% of the total disclosed IBIO value among the investors covered in this analysis. Major shareholders include Affinity Asset Advisors, Llc, Frazier Life Sciences Management, L.P., Ecor1 Capital, 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
51
Total Reported Value
$36.89M
Largest Holder
Affinity Asset Advisors, Llc
Largest Position
$5.90M
Insider Transactions (90d)
0
Latest Filing Quarter
Q1 2026
New Institutional Positions
64
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 | 0.35% | 3,107,200 | $5,903,680 | $4,971,520 | -$932,160 | -15.79% | |
| Frazier Life Sciences Management, L.P. | 0.10% | 1,953,467 | $3,711,587 | $3,125,547 | -$586,040 | -15.79% | |
| Ecor1 Capital, Llc | 0.13% | 1,583,000 | $3,007,700 | $2,532,800 | -$474,900 | -15.79% | |
| Millennium Management Llc | 0.00% | 1,549,850 | $2,944,715 | $2,479,760 | -$464,955 | -15.79% | |
| Logos Global Management Lp | 0.13% | 1,300,000 | $2,470,000 | $2,080,000 | -$390,000 | -15.79% | |
| Vanguard Capital Management Llc | 0.00% | 1,088,299 | $2,067,768 | $1,741,278 | -$326,490 | -15.79% | |
| Balyasny Asset Management L.P. | 0.00% | 1,010,955 | $1,920,815 | $1,617,528 | -$303,287 | -15.79% | |
| Ikarian Capital, Llc | 0.26% | 957,062 | $1,818,418 | $1,531,299 | -$287,119 | -15.79% | |
| Citadel Advisors Llc | 0.00% | 956,429 | $1,817,215 | $1,530,286 | -$286,929 | -15.79% | |
| Sio Capital Management, Llc | 0.25% | 904,268 | $1,718,109 | $1,446,829 | -$271,280 | -15.79% | |
| Marshall Wace, Llp | 0.00% | 620,602 | $1,179,144 | $992,963 | -$186,181 | -15.79% | |
| Adar1 Capital Management, Llc | 0.05% | 469,878 | $892,768 | $751,805 | -$140,963 | -15.79% | |
| Susquehanna International Group, Llp | 0.00% | 412,725 | $784,178 | $660,360 | -$123,818 | -15.79% | |
| Two Sigma Investments, Lp | 0.00% | 408,858 | $776,830 | $654,173 | -$122,657 | -15.79% | |
| Walleye Capital Llc | 0.00% | 388,554 | $738,253 | $621,686 | -$116,567 | -15.79% | |
| Geode Capital Management, Llc | 0.00% | 387,567 | $736,602 | $620,107 | -$116,495 | -15.82% | |
| Noesis Capital Mangement Corp | 0.09% | 311,500 | $591,850 | $498,400 | -$93,450 | -15.79% | |
| Bank Of America Corp | 0.00% | 290,413 | $551,785 | $464,661 | -$87,124 | -15.79% | |
| Boothbay Fund Management, Llc | 0.01% | 254,412 | $483,383 | $407,059 | -$76,324 | -15.79% | |
| Silverarc Capital Management, Llc | 0.05% | 226,000 | $429,400 | $361,600 | -$67,800 | -15.79% | |
| Vanguard Fiduciary Trust Co | 0.00% | 205,015 | $389,529 | $328,024 | -$61,505 | -15.79% | |
| Goldman Sachs Group Inc | 0.00% | 200,212 | $380,403 | $320,339 | -$60,064 | -15.79% | |
| Dafna Capital Management Llc | 0.08% | 193,638 | $367,912 | $309,821 | -$58,091 | -15.79% | |
| State Street Corp | 0.00% | 141,199 | $268,278 | $225,918 | -$42,360 | -15.79% | |
| Blackrock, Inc. | 0.00% | 131,215 | $249,309 | $209,944 | -$39,365 | -15.79% | |
| Northern Trust Corp | 0.00% | 77,324 | $146,916 | $123,718 | -$23,198 | -15.79% | |
| Lynx1 Capital Management Lp | 0.02% | 68,076 | $129,344 | $108,922 | -$20,422 | -15.79% | |
| Xtx Topco Ltd | 0.00% | 62,451 | $118,657 | $99,922 | -$18,735 | -15.79% | |
| Verdad Advisers, Lp | 0.12% | 56,318 | $107,004 | $90,109 | -$16,895 | -15.79% | |
| Morgan Stanley | 0.00% | 30,937 | $58,780 | $49,499 | -$9,281 | -15.79% | |
| Pfg Investments, Llc | 0.00% | 20,000 | $38,000 | $32,000 | -$6,000 | -15.79% | |
| Vanguard Personalized Indexing Management, Llc | 0.00% | 12,180 | $23,142 | $19,488 | -$3,654 | -15.79% | |
| Scientech Research Llc | 0.02% | 11,402 | $21,664 | $18,243 | -$3,421 | -15.79% | |
| Headlands Technologies Llc | 0.00% | 10,950 | $20,805 | $17,520 | -$3,285 | -15.79% | |
| Vanguard Global Advisers, Llc | 0.00% | 5,460 | $10,374 | $8,736 | -$1,638 | -15.79% | |
| Royal Bank Of Canada | 0.00% | 3,891 | $7,000 | $6,226 | -$774 | -11.06% | |
| Ubs Group Ag | 0.00% | 2,173 | $4,129 | $3,477 | -$652 | -15.80% | |
| Citigroup Inc | 0.00% | 1,373 | $2,609 | $2,197 | -$412 | -15.80% | |
| Fortitude Family Office, Llc | 0.00% | 638 | $1,212 | $1,021 | -$191 | -15.78% | |
| Osaic Holdings, Inc. | 0.00% | 584 | $1,110 | $934 | -$176 | -15.82% | |
| Shp Wealth Management | 0.00% | 60 | $114 | $96 | -$18 | -15.79% | |
| Hillsdale Investment Management Inc. | 0.00% | 32 | $61 | $51 | -$10 | -16.07% | |
| Sbi Securities Co., Ltd. | 0.00% | 22 | $42 | $35 | -$7 | -16.19% | |
| Soa Wealth Advisors, Llc. | 0.00% | 13 | $25 | $21 | -$4 | -16.80% | |
| Virtu Financial Llc | 0.00% | 10,822 | $21 | $17,315 | +$17,294 | +82353.33% | |
| Bnp Paribas Financial Markets | 0.00% | 5 | $10 | $8 | -$2 | -20.00% | |
| Activest Wealth Management | 0.00% | 4 | $8 | $6 | -$2 | -20.00% | |
| Caitong International Asset Management Co., Ltd | 0.00% | 2 | $4 | $3 | -$1 | -20.00% | |
| Financial Gravity Asset Management, Inc. | 0.00% | 2 | $4 | $3 | -$1 | -20.00% | |
| Steward Partners Investment Advisory, Llc | 0.00% | 1 | $2 | $2 | -$0 | -20.00% |
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.