IbioIBIO
13F holders, Q2 2026 (June 30)At the end of Q2 2026, 55 institutions reported holding Ibio Inc. (IBIO) in their 13F filings, up 3 from Q1 2026. 15 opened new positions and 12 sold out. The largest holders were Affinity Asset Advisors, LLC ($7.0M), Cormorant Asset Management, LP ($6.2M) and Silverarc Capital Management, LLC ($6.2M). 3 famous investors held it, including Israel Englander (0.0% of Millennium Management's portfolio), Ken Griffin (0.0% of Citadel Advisors's portfolio) and Jim Simons / Peter Brown (0.0% of Renaissance Technologies's portfolio).
- Company
- Ibio Inc.
- CUSIP
- 451033708
- Latest filing quarter
- Q2 2026
History
Number of 13F holders
Total Exit/New Position Q1 2026 → Q2 2026
| Institutions | Total Value | |
|---|---|---|
| New Positions | 15 | $19.3M |
| Exits | 12 | $6.5M |
All 13F filers, Q1 2026 → Q2 2026: 18,900,360 shares bought and 3,587,247 shares sold, net +15,313,113 shares. Counts holders who added, trimmed, opened or closed a position; split-adjusted.
Ownership 55 holders
| Affinity Asset Advisors, LLC | 0.35% | Add +29.0% | 4,007,881 | $7.0M |
| Cormorant Asset Management, LP | 0.32% | New | 3,570,000 | $6.2M |
| Silverarc Capital Management, LLC | 0.69% | Add +1457.7% | 3,520,490 | $6.2M |
| Vestal Point Capital, LP | 0.11% | New | 2,600,000 | $4.5M |
| Vanguard Capital Management LLC | 0.00% | Add +92.8% | 2,098,151 | $3.7M |
| Frazier Life Sciences Management, L.P. | 0.07% | No change | 1,953,467 | $3.4M |
| Ensign Peak Advisors, Inc | 0.01% | New | 1,832,457 | $3.2M |
| Woodline Partners LP | 0.01% | New | 1,776,547 | $3.1M |
| Millennium Management | 0.00% | Add +6.6% | 1,651,473 | $2.9M |
| Citadel Advisors | 0.00% | Add +44.7% | 1,384,029 | $2.4M |
| Balyasny Asset Management L.P. | 0.00% | Add +15.8% | 1,170,893 | $2.0M |
| Bank of America Corp. | 0.00% | Add +286.2% | 1,121,492 | $2.0M |
| Ikarian Capital, LLC | 0.27% | No change | 957,062 | $1.7M |
| Sio Capital Management, LLC | 0.27% | No change | 904,268 | $1.6M |
| Marshall Wace, LLP | 0.00% | Add +45.7% | 904,132 | $1.6M |
| Geode Capital Management, LLC | 0.00% | Add +29.2% | 500,816 | $877K |
| Walleye Capital LLC | 0.00% | Add +28.8% | 500,375 | $876K |
| Squarepoint Ops LLC | 0.00% | New | 498,872 | $873K |
| Noesis Capital Mangement Corp. | 0.09% | Add +30.0% | 405,000 | $709K |
| Two Sigma Investments, LP | 0.00% | Reduce -2.0% | 400,667 | $701K |
| Ally Bridge Group (NY) LLC | 0.88% | New | 390,147 | $683K |
| ADAR1 Capital Management, LLC | 0.03% | Reduce -20.1% | 375,531 | $657K |
| Verdad Advisers, LP | 0.50% | Add +430.8% | 298,927 | $523K |
| Vanguard Fiduciary Trust Co. | 0.00% | Add +39.9% | 286,875 | $502K |
| Boothbay Fund Management, LLC | 0.01% | No change | 254,412 | $445K |
| BlackRock, Inc. | 0.00% | Add +84.4% | 242,016 | $424K |
| Renaissance Technologies | 0.00% | New | 202,847 | $355K |
| Goldman Sachs Group Inc. | 0.00% | Add +0.1% | 200,455 | $351K |
| State Street Corp. | 0.00% | Add +21.0% | 170,799 | $299K |
| DAFNA Capital Management LLC | 0.06% | Reduce -12.2% | 170,053 | $298K |
| Northern Trust Corp. | 0.00% | Add +44.0% | 111,319 | $195K |
| Atom Investors LP | 0.02% | New | 101,557 | $178K |
| XTX Topco Ltd | 0.00% | Reduce -7.4% | 57,842 | $101K |
| Headlands Technologies LLC | 0.01% | Add +333.0% | 47,413 | $83K |
| Two Sigma Securities, LLC | 0.00% | New | 16,151 | $28K |
| Innovative Asset Advisors Group, LLC | 0.01% | New | 15,000 | $26K |
| Spark Investment Management LLC | 0.05% | New | 13,500 | $24K |
| Bank of New York Mellon Corp | 0.00% | New | 10,637 | $19K |
| JPMorgan Chase & Co. | 0.00% | Add +294750.0% | 5,897 | $10K |
| Vanguard Global Advisers, LLC | 0.00% | No change | 5,460 | $10K |
| Barclays PLC | 0.00% | New | 3,255 | $6K |
| UBS Group AG | 0.00% | Reduce -76.9% | 501 | $877 |
| FMR LLC | 0.00% | New | 433 | $757 |
| Fortitude Family Office, LLC | 0.00% | Reduce -32.5% | 431 | $754 |
| Osaic Holdings, Inc. | 0.00% | Reduce -34.9% | 380 | $665 |
| Wells Fargo & Company | 0.00% | Add +10000.0% | 101 | $177 |
| SHP Wealth Management | 0.00% | No change | 60 | $105 |
| SBI Securities Co., Ltd. | 0.00% | Add +90.9% | 42 | $74 |
| SOA Wealth Advisors, LLC. | 0.00% | No change | 13 | $23 |
| Morgan Stanley | 0.00% | Reduce -100.0% | 10 | $18 |
| Caitong International Asset Management Co., Ltd | 0.00% | Add +350.0% | 9 | $16 |
| Activest Wealth Management | 0.00% | No change | 4 | $7 |
| BNP Paribas Financial Markets | 0.00% | Reduce -60.0% | 2 | $4 |
| Financial Gravity Companies, Inc. | 0.00% | — | 2 | $4 |
| Rockefeller Capital Management L.P. | 0.00% | New | 1 | $2 |
"% of holder's portfolio" is IBIO's weight in each manager's 13F, not the share of Ibio Inc. the manager owns.