# IBIO INC COM NEW

IBIO INC COM NEW is a security (CUSIP 451033708) tracked across SEC portfolio filings. 53 institutional managers reported $36.4M on Form 13F as of 2026-06-30; 4 registered fund positions totaling $794K via N-PORT as of 2026-05-29.

## Summary

- Issuer: IBIO INC
- Class: COM NEW
- CUSIP: 451033708
- Asset category: EC
- 13F holders: 53
- 13F value: $36.4M
- 13F period: 2026-06-30
- N-PORT fund positions: 4
- N-PORT value: $794K
- N-PORT report: 2026-05-29

## Top institutional holders (Form 13F)

_Showing 15 of 53 managers by value._

| Manager | Location | Value | Shares |
| --- | --- | --- | --- |
| [Affinity Asset Advisors, LLC](https://search.stillhousedata.com/firm/312788) | New York, NY | $5.9M | 3,107,200 |
| [Frazier Life Sciences Management, L.P.](https://search.stillhousedata.com/firm/317522) | MENLO PARK, CA | $3.7M | 1,953,467 |
| [EcoR1 Capital, LLC](https://search.stillhousedata.com/firm/167121) | San Francisco, CA | $3.0M | 1,583,000 |
| MILLENNIUM MANAGEMENT LLC | NEW YORK, NY | $2.9M | 1,549,850 |
| [Logos Global Management LP](https://search.stillhousedata.com/firm/305162) | San Francisco, CA | $2.5M | 1,300,000 |
| [Balyasny Asset Management L.P.](https://search.stillhousedata.com/firm/138111) | Chicago, IL | $1.9M | 1,010,955 |
| [Ikarian Capital, LLC](https://search.stillhousedata.com/firm/1778253) | DALLAS, TX | $1.8M | 957,062 |
| [CITADEL ADVISORS LLC](https://search.stillhousedata.com/firm/148826) | MIAMI, FL | $1.8M | 956,429 |
| Sio Capital Management, LLC | New York, NY | $1.7M | 904,268 |
| [VANGUARD GROUP INC](https://search.stillhousedata.com/firm/105958) | Valley Forge, PA | $1.7M | 883,149 |
| [MARSHALL WACE, LLP](https://search.stillhousedata.com/firm/160885) | LONDON, X0 | $1.2M | 620,602 |
| [ADAR1 Capital Management, LLC](https://search.stillhousedata.com/firm/299694) | AUSTIN, TX | $893K | 469,878 |
| [Walleye Capital LLC](https://search.stillhousedata.com/firm/161413) | NEW YORK, NY | $876K | 500,375 |
| SUSQUEHANNA INTERNATIONAL GROUP, LLP | BALA CYNWYD, PA | $784K | 412,725 |
| [TWO SIGMA INVESTMENTS, LP](https://search.stillhousedata.com/firm/137137) | New York, NY | $777K | 408,858 |

## Top fund holders (N-PORT)

| Fund | Registrant | Value | % of fund |
| --- | --- | --- | --- |
| [VANGUARD EXTENDED MARKET INDEX FUND](https://search.stillhousedata.com/fund/S000002841) | VANGUARD INDEX FUNDS | $753K | 0.09% |
| [VANGUARD BALANCED INDEX FUND](https://search.stillhousedata.com/fund/S000002560) | VANGUARD VALLEY FORGE FUNDS | $39K | 0.01% |
| [Blackstone Alternative Multi-Strategy Fund](https://search.stillhousedata.com/fund/S000045538) | Blackstone Alternative Investment Funds | $2K | 0.01% |
| Guggenheim Active Allocation Fund | Guggenheim Active Allocation Fund | $4 | 0.00% |

## More

- [This page as markdown (for LLM agents)](https://search.stillhousedata.com/security/451033708.md)
- [Search all SEC filings, advisers and people on Adviser Search](https://search.stillhousedata.com/)

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Source: public SEC filing data via Adviser Search (https://search.stillhousedata.com).
Agents: this data is also queryable via MCP tools and read-only SQL — see https://search.stillhousedata.com/llms.txt.