# IO BIOTECH INC COM

IO BIOTECH INC COM is a security (CUSIP 449778109) tracked across SEC portfolio filings. 11 institutional managers reported $175K on Form 13F as of 2026-03-31; 1 registered fund positions totaling $-29 via N-PORT as of 2026-03-31.

## Summary

- Issuer: IO BIOTECH INC
- Class: COM
- CUSIP: 449778109
- Asset category: EC
- 13F holders: 11
- 13F value: $175K
- 13F period: 2026-03-31
- N-PORT fund positions: 1
- N-PORT value: $-29
- N-PORT report: 2026-03-31

## Top institutional holders (Form 13F)

| Manager | Location | Value | Shares |
| --- | --- | --- | --- |
| [Ikarian Capital, LLC](https://search.stillhousedata.com/firm/1778253) | DALLAS, TX | $81K | 1,386,565 |
| [BOOTHBAY FUND MANAGEMENT, LLC](https://search.stillhousedata.com/firm/163706) | NEW YORK, NY | $27K | 451,852 |
| [MARSHALL WACE, LLP](https://search.stillhousedata.com/firm/160885) | LONDON, X0 | $18K | 301,291 |
| XTX Topco Ltd | LONDON, X0 | $16K | 265,792 |
| MORGAN STANLEY | NEW YORK, NY | $12K | 206,215 |
| MILLENNIUM MANAGEMENT LLC | NEW YORK, NY | $11K | 194,158 |
| JANE STREET GROUP, LLC | NEW YORK, NY | $3K | 57,974 |
| [Beacon Pointe Advisors, LLC](https://search.stillhousedata.com/firm/119290) | NEWPORT BEACH, CA | $3K | 42,600 |
| [GEODE CAPITAL MANAGEMENT, LLC](https://search.stillhousedata.com/firm/115504) | BOSTON, MA | $2K | 33,307 |
| UBS Group AG | Zurich, V8 | $2K | 30,980 |
| CONCOURSE FINANCIAL GROUP SECURITIES, INC. | BIRMINGHAM, AL | — | 0 |

## Top fund holders (N-PORT)

| Fund | Registrant | Value | % of fund |
| --- | --- | --- | --- |
| [Blackstone Alternative Multi-Strategy Fund](https://search.stillhousedata.com/fund/S000045538) | Blackstone Alternative Investment Funds | $-29 | -0.00% |

## More

- [This page as markdown (for LLM agents)](https://search.stillhousedata.com/security/449778109.md)
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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.