iBio
IBIO · NYSE American
$0.821+$0.0609 (+8.01%)TodayMarket closed ·
Prev close $0.7601
Who owns IBIO
Largest institutional holders, from their latest 13F filings
The 10 largest institutions hold 49.1% of IBIO’s shares.
- Affinity Asset Advisors LLC8.1%
- Cormorant Asset Management, LP7.2%
- SilverArc Capital Management, LLC7.1%
- Vestal Point Capital, LP5.2%
- Next 6 largest institutions21.5%
- All other shareholders50.9%
| Holder | Shares | % of shares |
|---|---|---|
| Affinity Asset Advisors LLC | 4.01M | 8.07% |
| Cormorant Asset Management, LP | 3.57M | 7.19% |
| SilverArc Capital Management, LLC | 3.52M | 7.09% |
| Vestal Point Capital, LP | 2.60M | 5.23% |
| Vanguard Capital Management, LLC | 2.10M | 4.22% |
| Frazier Life Sciences Management, L.P. | 1.95M | 3.93% |
| Ensign Peak Advisors, Inc. | 1.83M | 3.69% |
| Woodline Partners LP | 1.78M | 3.58% |
| Millennium Management LLC | 1.65M | 3.32% |
| Citadel Advisors LLC | 1.38M | 2.79% |
Largest mutual fund holders
| Holder | Shares | % of shares |
|---|---|---|
| Vanguard Total Stock Market Index Fund | 1.47M | 2.95% |
| Vanguard Extended Market Index Fund | 582.07K | 1.17% |
| Fidelity Extended Market Index Fund | 257.76K | 0.52% |
| iShares Micro-Cap ETF | 105.20K | 0.21% |
| Fidelity Series Total Market Index Fund | 75.30K | 0.15% |
Insider trades
Form 4 filings by officers, directors and large holders
Insiders made no open-market buys or sales of IBIO in the last 6 months.
| Insider | Type | Shares | Value |
|---|---|---|---|
| Kropotova Alexandra | Award | 38.00K | — |
| Parada Antonio Bernardino Guimaraes | Award | 38.00K | — |
| Sender Gary | Award | 38.00K | — |
| Stoner Elizabeth | Award | 38.00K | — |
| Clark William D | Award | 38.00K | — |
| Arkowitz David | Award | 38.00K | — |
| Carr Molly | Award | 430.00K | — |
| Stoner Elizabeth | Award | 60.00K | — |
Short interest
Settled Sep 30, 2026
- Shares short
- 4.20M
- Days to cover
- 6.17
- % of shares outstanding
- 8.46%
- Average daily volume
- 681.57K
- Change since last report
- −14.9%
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