# IO BIOTECH INC (IOBTQ)

> Institutional ownership reported to the SEC as of Q1 2026, from Form 13F filings. Source: https://holderbook.com/stocks/IOBTQ/

- Reporting holders: 12
- Reported value: $199.0K
- Shares held by institutions: 3,391,578 of 71,948,842 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 |
|---|---|---|---|---|
| [Ikarian Capital, LLC](https://holderbook.com/funds/1778253-ikarian-capital-llc/) | $81.4K | 1,386,565 | 0.0% | 3 |
| [BOOTHBAY FUND MANAGEMENT, LLC](https://holderbook.com/funds/1549230-boothbay-fund-management-llc/) | $26.5K | 451,852 | 0.0% | 3 |
| [GSA CAPITAL PARTNERS LLP](https://holderbook.com/funds/1362033-gsa-capital-partners-llp/) | $20.0K | 348,352 | 0.0% | 1 |
| [MARSHALL WACE, LLP](https://holderbook.com/funds/1318757-marshall-wace-llp/) | $18.1K | 301,291 | 0.0% | 11 |
| [XTX Topco Ltd](https://holderbook.com/funds/1828301-xtx-topco-ltd/) | $15.6K | 265,792 | 0.0% | 6 |
| [MORGAN STANLEY](https://holderbook.com/funds/895421-morgan-stanley/) | $12.1K | 206,215 | 0.0% | 18 |
| [MILLENNIUM MANAGEMENT LLC](https://holderbook.com/funds/1273087-millennium-management-llc/) | $11.4K | 194,158 | 0.0% | 3 |
| [CITIGROUP INC](https://holderbook.com/funds/831001-citigroup-inc/) | $4.3K | 72,495 | 0.0% | 4 |
| [JANE STREET GROUP, LLC](https://holderbook.com/funds/1595888-jane-street-group-llc/) | $3.4K | 57,974 | 0.0% | 1 |
| [Beacon Pointe Advisors, LLC](https://holderbook.com/funds/1744317-beacon-pointe-advisors-llc/) | $2.5K | 42,600 | 0.0% | 2 |
| [GEODE CAPITAL MANAGEMENT, LLC](https://holderbook.com/funds/1214717-geode-capital-management-llc/) | $2.0K | 33,307 | 0.0% | 18 |
| [UBS Group AG](https://holderbook.com/funds/1610520-ubs-group-ag/) | $1.8K | 30,977 | 0.0% | 8 |

## Quarter by quarter

| Quarter | Holders | Reported value |
|---|---|---|
| Q1 2026 | 12 | $199.0K |
| Q4 2025 | 22 | $4.8M |
| Q3 2025 | 21 | $3.6M |
| Q2 2025 | 26 | $25.3M |
| Q1 2025 | 22 | $20.8M |
| Q4 2024 | 27 | $18.2M |
| Q3 2024 | 20 | $24.8M |
| Q2 2024 | 21 | $32.4M |
| Q1 2024 | 19 | $56.7M |
| Q4 2023 | 19 | $61.4M |
| Q3 2023 | 19 | $43.1M |
| Q2 2023 | 15 | $24.0M |