IBIO iBio, Inc.
iBio, Inc. (IBIO) Institutional Ownership
What the institutions did with IBIO last quarter, from their 13F filings. Counting managers rather than shares is the point: a single index fund adding to a position tells you far less than four hundred separate managers all deciding to. Positions as reported for the quarter ended June 30, 2026.
Every manager below opens. Subscribers can see any firm's whole portfolio — every position, its weight, and what they bought, trimmed and exited last quarter.
Sign in or subscribeLargest holders
| Manager | Shares | % of reported |
|---|---|---|
| Affinity Asset Advisors, LLC | 4.0M | 11.5% |
| Cormorant Asset Management, LP | 3.6M | 10.3% |
| SILVERARC CAPITAL MANAGEMENT, LLC | 3.5M | 10.1% |
| Vestal Point Capital, LP | 2.6M | 7.5% |
| VANGUARD CAPITAL MANAGEMENT LLC | 2.1M | 6.0% |
| Frazier Life Sciences Management, L.P. | 2.0M | 5.6% |
| Ensign Peak Advisors, Inc | 1.8M | 5.3% |
| Woodline Partners LP | 1.8M | 5.1% |
| MILLENNIUM MANAGEMENT LLC | 1.7M | 4.8% |
| CITADEL ADVISORS LLC | 1.4M | 4.0% |
| Balyasny Asset Management L.P. | 1.2M | 3.4% |
| BANK OF AMERICA CORP /DE/ | 1.1M | 3.2% |
| Ikarian Capital, LLC | 957.1K | 2.8% |
| Sio Capital Management, LLC | 904.3K | 2.6% |
| MARSHALL WACE, LLP | 904.1K | 2.6% |
| GEODE CAPITAL MANAGEMENT, LLC | 500.8K | 1.4% |
| Walleye Capital LLC | 500.4K | 1.4% |
| Squarepoint Ops LLC | 498.9K | 1.4% |
| NOESIS CAPITAL MANGEMENT CORP | 405.0K | 1.2% |
| TWO SIGMA INVESTMENTS, LP | 400.7K | 1.2% |
| Ally Bridge Group (NY) LLC | 390.1K | 1.1% |
| ADAR1 Capital Management, LLC | 375.5K | 1.1% |
| Verdad Advisers, LP | 298.9K | 0.9% |
| VANGUARD FIDUCIARY TRUST CO | 286.9K | 0.8% |
| BOOTHBAY FUND MANAGEMENT, LLC | 254.4K | 0.7% |
Largest changes
| Manager | Action | Previous | Current | Change |
|---|---|---|---|---|
| Cormorant Asset Management, LP | New | 0 | 3.6M | +3.6M |
| SILVERARC CAPITAL MANAGEMENT, LLC | Increased | 226.0K | 3.5M | +3.3M |
| Vestal Point Capital, LP | New | 0 | 2.6M | +2.6M |
| Ensign Peak Advisors, Inc | New | 0 | 1.8M | +1.8M |
| Woodline Partners LP | New | 0 | 1.8M | +1.8M |
| EcoR1 Capital, LLC | Sold Out | 1.6M | 0 | -1.6M |
| Logos Global Management LP | Sold Out | 1.3M | 0 | -1.3M |
| VANGUARD CAPITAL MANAGEMENT LLC | Increased | 1.1M | 2.1M | +1.0M |
| Affinity Asset Advisors, LLC | Increased | 3.1M | 4.0M | +900.7K |
| BANK OF AMERICA CORP /DE/ | Increased | 290.4K | 1.1M | +831.1K |
| Squarepoint Ops LLC | New | 0 | 498.9K | +498.9K |
| CITADEL ADVISORS LLC | Increased | 956.4K | 1.4M | +427.6K |
| SUSQUEHANNA INTERNATIONAL GROUP, LLP | Sold Out | 412.7K | 0 | -412.7K |
| Ally Bridge Group (NY) LLC | New | 0 | 390.1K | +390.1K |
| MARSHALL WACE, LLP | Increased | 620.6K | 904.1K | +283.5K |
| Verdad Advisers, LP | Increased | 56.3K | 298.9K | +242.6K |
| RENAISSANCE TECHNOLOGIES LLC | New | 0 | 202.8K | +202.8K |
| Balyasny Asset Management L.P. | Increased | 1.0M | 1.2M | +159.9K |
| GEODE CAPITAL MANAGEMENT, LLC | Increased | 387.6K | 500.8K | +113.2K |
| Walleye Capital LLC | Increased | 388.6K | 500.4K | +111.8K |
| BlackRock, Inc. | Increased | 131.2K | 242.0K | +110.8K |
| MILLENNIUM MANAGEMENT LLC | Increased | 1.5M | 1.7M | +101.6K |
| Atom Investors LP | New | 0 | 101.6K | +101.6K |
| ADAR1 Capital Management, LLC | Reduced | 469.9K | 375.5K | -94.3K |
| NOESIS CAPITAL MANGEMENT CORP | Increased | 311.5K | 405.0K | +93.5K |
13F filings are due 45 days after quarter end and cover long positions in U.S.-listed equities only, so this is a lagged and partial picture: shorts, bonds and foreign listings never appear. Options positions are excluded here rather than folded into the share counts. Political ownership is coming.