# IBIO INC (IBIO)

> Institutional ownership reported to the SEC as of Q2 2026, from Form 13F filings. Source: https://holderbook.com/stocks/IBIO/

- Reporting holders: 56
- Reported value: $63.5M
- Shares held by institutions: 36,294,989 of 49,678,561 outstanding
- Held through calls: 0.0%
- Held through puts: 0.0%

A 13F reports long US equity positions only. Shorts, bonds, foreign listings and cash are not visible here, and positions are disclosed up to 45 days after the quarter ends.

## Largest holders

| Manager | Value | Shares | Share of their book | Quarters held |
|---|---|---|---|---|
| [Affinity Asset Advisors, LLC](https://holderbook.com/funds/1773195-affinity-asset-advisors-llc/) | $7.0M | 4,007,881 | 0.3% | 3 |
| [Cormorant Asset Management, LP](https://holderbook.com/funds/1583977-cormorant-asset-management-lp/) | $6.2M | 3,570,000 | 0.3% | 1 |
| [SILVERARC CAPITAL MANAGEMENT, LLC](https://holderbook.com/funds/1816307-silverarc-capital-management-llc/) | $6.2M | 3,520,490 | 0.6% | 3 |
| [CITADEL ADVISORS LLC](https://holderbook.com/funds/1423053-citadel-advisors-llc/) | $4.8M | 2,768,058 | 0.0% | 2 |
| [Vestal Point Capital, LP](https://holderbook.com/funds/1974915-vestal-point-capital-lp/) | $4.5M | 2,600,000 | 0.1% | 1 |
| [VANGUARD CAPITAL MANAGEMENT LLC](https://holderbook.com/funds/2100119-vanguard-capital-management-llc/) | $3.7M | 2,098,151 | 0.0% | 2 |
| [Frazier Life Sciences Management, L.P.](https://holderbook.com/funds/1892134-frazier-life-sciences-management-l-p/) | $3.4M | 1,953,467 | 0.1% | 3 |
| [Ensign Peak Advisors, Inc](https://holderbook.com/funds/1454984-ensign-peak-advisors-inc/) | $3.2M | 1,832,457 | 0.0% | 1 |
| [Woodline Partners LP](https://holderbook.com/funds/1784547-woodline-partners-lp/) | $3.1M | 1,776,547 | 0.0% | 1 |
| [MILLENNIUM MANAGEMENT LLC](https://holderbook.com/funds/1273087-millennium-management-llc/) | $2.9M | 1,651,473 | 0.0% | 2 |
| [Balyasny Asset Management L.P.](https://holderbook.com/funds/1218710-balyasny-asset-management-l-p/) | $2.0M | 1,170,893 | 0.0% | 4 |
| [BANK OF AMERICA CORP /DE/](https://holderbook.com/funds/70858-bank-of-america-corp-de/) | $2.0M | 1,121,492 | 0.0% | 9 |
| [Ikarian Capital, LLC](https://holderbook.com/funds/1778253-ikarian-capital-llc/) | $1.7M | 957,062 | 0.2% | 10 |
| [Sio Capital Management, LLC](https://holderbook.com/funds/1482416-sio-capital-management-llc/) | $1.6M | 904,268 | 0.3% | 3 |
| [MARSHALL WACE, LLP](https://holderbook.com/funds/1318757-marshall-wace-llp/) | $1.6M | 904,132 | 0.0% | 3 |
| [GEODE CAPITAL MANAGEMENT, LLC](https://holderbook.com/funds/1214717-geode-capital-management-llc/) | $876.6K | 500,816 | 0.0% | 9 |
| [Walleye Capital LLC](https://holderbook.com/funds/1758720-walleye-capital-llc/) | $875.7K | 500,375 | 0.0% | 3 |
| [Squarepoint Ops LLC](https://holderbook.com/funds/1642575-squarepoint-ops-llc/) | $873.0K | 498,872 | 0.0% | 1 |
| [NOESIS CAPITAL MANGEMENT CORP](https://holderbook.com/funds/1262677-noesis-capital-mangement-corp/) | $708.8K | 405,000 | 0.1% | 3 |
| [TWO SIGMA INVESTMENTS, LP](https://holderbook.com/funds/1179392-two-sigma-investments-lp/) | $701.2K | 400,667 | 0.0% | 3 |
| [Ally Bridge Group (NY) LLC](https://holderbook.com/funds/1822947-ally-bridge-group-ny-llc/) | $682.8K | 390,147 | 0.6% | 1 |
| [ADAR1 Capital Management, LLC](https://holderbook.com/funds/1940272-adar1-capital-management-llc/) | $657.2K | 375,531 | 0.0% | 5 |
| [STATE STREET CORP](https://holderbook.com/funds/93751-state-street-corp/) | $597.8K | 341,598 | 0.0% | 6 |
| [Verdad Advisers, LP](https://holderbook.com/funds/1812822-verdad-advisers-lp/) | $523.1K | 298,927 | 0.5% | 2 |
| [VANGUARD FIDUCIARY TRUST CO](https://holderbook.com/funds/933478-vanguard-fiduciary-trust-co/) | $502.0K | 286,875 | 0.0% | 2 |

## Quarter by quarter

| Quarter | Holders | Reported value |
|---|---|---|
| Q2 2026 | 56 | $63.5M |
| Q1 2026 | 52 | $36.9M |
| Q4 2025 | 49 | $31.6M |
| Q3 2025 | 32 | $3.0M |
| Q2 2025 | 30 | $2.4M |
| Q1 2025 | 34 | $10.4M |
| Q4 2024 | 29 | $6.4M |
| Q3 2024 | 31 | $5.8M |
| Q2 2024 | 26 | $3.9M |
| Q1 2024 | 27 | $11.5M |
| Q4 2023 | 21 | $540.1K |
| Q3 2023 | 28 | $385.9K |