IbioIBIO
13F holders, Q1 2026 (March 31)At the end of Q1 2026, 52 institutions reported holding Ibio Inc. (IBIO) in their 13F filings, up 2 from Q4 2025. 13 opened new positions and 11 sold out. The largest holders were Affinity Asset Advisors, LLC ($5.9M), Frazier Life Sciences Management, L.P. ($3.7M) and EcoR1 Capital, LLC ($3.0M). 2 famous investors held it, including Israel Englander (0.0% of Millennium Management's portfolio) and Ken Griffin (0.0% of Citadel Advisors's portfolio).
- Company
- Ibio Inc.
- CUSIP
- 451033708
- Latest filing quarter
- Q2 2026
History
Number of 13F holders
Total Exit/New Position Q4 2025 → Q1 2026
| Institutions | Total Value | |
|---|---|---|
| New Positions | 13 | $6.6M |
| Exits | 11 | $3.5M |
All 13F filers, Q4 2025 → Q1 2026: 6,212,318 shares bought and 3,431,969 shares sold, net +2,780,349 shares. Counts holders who added, trimmed, opened or closed a position; split-adjusted.
Ownership 52 holders
| Affinity Asset Advisors, LLC | 0.35% | Add +51.0% | 3,107,200 | $5.9M |
| Frazier Life Sciences Management, L.P. | 0.10% | No change | 1,953,467 | $3.7M |
| EcoR1 Capital, LLC | 0.13% | Reduce -28.9% | 1,583,000 | $3.0M |
| Millennium Management | 0.00% | New | 1,549,850 | $2.9M |
| Logos Global Management LP | 0.13% | Reduce -35.0% | 1,300,000 | $2.5M |
| Vanguard Capital Management LLC | 0.00% | — | 1,088,299 | $2.1M |
| Balyasny Asset Management L.P. | 0.00% | Reduce -7.8% | 1,010,955 | $1.9M |
| Ikarian Capital, LLC | 0.26% | No change | 957,062 | $1.8M |
| Citadel Advisors | 0.00% | New | 956,429 | $1.8M |
| Sio Capital Management, LLC | 0.25% | Add +22.2% | 904,268 | $1.7M |
| Marshall Wace, LLP | 0.00% | Add +411.7% | 620,602 | $1.2M |
| ADAR1 Capital Management, LLC | 0.05% | Add +15.9% | 469,878 | $893K |
| Susquehanna International Group, LLP | 0.00% | New | 412,725 | $784K |
| Two Sigma Investments, LP | 0.00% | Reduce -10.4% | 408,858 | $777K |
| Walleye Capital LLC | 0.00% | Add +95.9% | 388,554 | $738K |
| Geode Capital Management, LLC | 0.00% | Add +74.1% | 387,567 | $737K |
| Noesis Capital Mangement Corp. | 0.09% | Add +38.9% | 311,500 | $592K |
| Bank of America Corp. | 0.00% | Add +150.8% | 290,413 | $552K |
| Boothbay Fund Management, LLC | 0.01% | No change | 254,412 | $483K |
| Silverarc Capital Management, LLC | 0.05% | Add +113.2% | 226,000 | $429K |
| Vanguard Fiduciary Trust Co. | 0.00% | — | 205,015 | $390K |
| Goldman Sachs Group Inc. | 0.00% | New | 200,212 | $380K |
| DAFNA Capital Management LLC | 0.08% | New | 193,638 | $368K |
| State Street Corp. | 0.00% | Add +93.7% | 141,199 | $268K |
| BlackRock, Inc. | 0.00% | Add +207.1% | 131,215 | $249K |
| Northern Trust Corp. | 0.00% | Add +91.8% | 77,324 | $147K |
| Lynx1 Capital Management LP | 0.02% | New | 68,076 | $129K |
| XTX Topco Ltd | 0.00% | Add +68.7% | 62,451 | $119K |
| Verdad Advisers, LP | 0.12% | New | 56,318 | $107K |
| Morgan Stanley | 0.00% | Add +12.1% | 30,937 | $59K |
| PFG Investments, LLC | 0.00% | Reduce -7.0% | 20,000 | $38K |
| Vanguard Personalized Indexing Management, LLC | 0.00% | Reduce -2.5% | 12,180 | $23K |
| Scientech Research LLC | 0.02% | New | 11,402 | $22K |
| Virtu Financial LLC | 0.00% | New | 10,822 | $21K |
| Headlands Technologies LLC | 0.00% | New | 10,950 | $21K |
| Vanguard Global Advisers, LLC | 0.00% | — | 5,460 | $10K |
| Royal Bank of Canada | 0.00% | New | 3,891 | $7K |
| UBS Group AG | 0.00% | Reduce -98.3% | 2,173 | $4K |
| Citigroup Inc. | 0.00% | Reduce -72.8% | 1,373 | $3K |
| Fortitude Family Office, LLC | 0.00% | Add +48.0% | 638 | $1K |
| Osaic Holdings, Inc. | 0.00% | Add +52.1% | 584 | $1K |
| SHP Wealth Management | 0.00% | No change | 60 | $114 |
| Hillsdale Investment Management Inc. | 0.00% | New | 32 | $61 |
| SBI Securities Co., Ltd. | 0.00% | No change | 22 | $42 |
| SOA Wealth Advisors, LLC. | 0.00% | No change | 13 | $25 |
| BNP Paribas Financial Markets | 0.00% | No change | 5 | $10 |
| Activest Wealth Management | 0.00% | No change | 4 | $8 |
| Financial Gravity Asset Management, Inc. | 0.00% | No change | 2 | $4 |
| Caitong International Asset Management Co., Ltd | 0.00% | New | 2 | $4 |
| JPMorgan Chase & Co. | 0.00% | No change | 2 | $3 |
| Wells Fargo & Company | 0.00% | No change | 1 | $2 |
| Steward Partners Investment Advisory, LLC | 0.00% | No change | 1 | $2 |
"% of holder's portfolio" is IBIO's weight in each manager's 13F, not the share of Ibio Inc. the manager owns.