IO Biotech, Inc.
IOBTDelisted Jun 8, 2026- Industry
- Pharmaceutical Preparations
- SEC CIK
- 0001865494
IO Biotech, Inc. was delisted on Jun 8, 2026; its insiders filed their last Form 4 on Jun 6, 2025; 12 institutions reported holding it in 13F filings for Q1 2026, worth $199.0K in total; no superinvestor held it.
13F holders, Q3 2025
Institutional positions in IO Biotech, Inc. as of Sep 30, 2025. Investment managers with $100 million or more in US stocks report their long positions on Form 13F within 45 days after each quarter ends. How 13F works
- Institutional holders
- 21
- −5 vs. Q2 2025
- Shares held
- 9.90M
- −8.29M (−45.6%) vs. Q2 2025
- Total value
- $3.59M
- −$21.7M (−85.8%) vs. Q2 2025
- New holders
- 9
- 5 more added
- Sold out
- 14
- 5 more reduced
Compare with Q2 2025: new holders, sold out and not filed yet
Holders and value by quarter
Institutions reporting IOBT on Form 13F each quarter since Q1 2021, and the total value they reported. Values are as of each quarter end, so they also move with the share price.
| Quarter | Holders | Value |
|---|---|---|
| Q2 2026 | 0 | $0 |
| Q1 2026 | 12 | $199.0K |
| Q4 2025 | 22 | $4.78M |
| Q3 2025 | 21 | $3.59M |
| Q2 2025 | 26 | $25.3M |
| Q1 2025 | 22 | $20.8M |
| Q4 2024 | 27 | $18.2M |
| Q3 2024 | 20 | $24.8M |
| Q2 2024 | 20 | $30.7M |
| Q1 2024 | 18 | $47.4M |
| Q4 2023 | 18 | $55.3M |
| Q3 2023 | 19 | $41.7M |
| Q2 2023 | 15 | $24.0M |
| Q1 2023 | 17 | $26.1M |
| Q4 2022 | 17 | $32.8M |
| Q3 2022 | 21 | $41.6M |
| Q2 2022 | 18 | $72.2M |
| Q1 2022 | 19 | $76.9M |
| Q4 2021 | 20 | $92.6M |
| Q3 2021 | 0 | $0 |
| Q2 2021 | 0 | $0 |
| Q1 2021 | 0 | $0 |
Institutions, Q3 2025
Shares, value and share of portfolio for each institution holding IO Biotech, Inc.; share changes are against Q2 2025.
| Institution | Shares | Value | % of portfolio | Change in shares | Action |
|---|---|---|---|---|---|
| Novo Holdings A/S | 2,512,453 | $912.3K | 0.06% | −841,996−25.1% | Reduced |
| Ikarian Capital, LLC | 1,525,893 | $554.1K | 0.13% | +1,525,893 | New |
| Millennium Management LLC | 1,392,396 | $505.6K | 0.00% | +1,392,396 | New |
| Marshall Wace, LLP | 1,052,631 | $378.9K | 0.00% | −1,052,631−50.0% | Reduced |
| Bank of America Corp | 799,953 | $290.4K | 0.00% | −815,121−50.5% | Reduced |
| Morgan Stanley | 668,402 | $242.7K | 0.00% | +14,724+2.3% | Added |
| Boothbay Fund Management, LLC | 591,180 | $214.7K | 0.01% | +591,180 | New |
| Renaissance Technologies LLC | 547,315 | $198.7K | 0.00% | +408,015+292.9% | Added |
| Point72 Asset Management, L.P. | 250,000 | $90.8K | 0.00% | +250,000 | New |
| XTX Topco Ltd | 179,207 | $65.1K | 0.00% | +150,018+514.0% | Added |
| Quadrature Capital Ltd | 83,382 | $30.3K | 0.00% | +83,382 | New |
| Bridgeway Capital Management, LLC | 75,000 | $27.2K | 0.00% | 00.0% | Unchanged |
| Goldman Sachs Group Inc | 66,564 | $24.2K | 0.00% | +66,564 | New |
| Virtu Financial LLC | 39,063 | $14.0K | 0.00% | +39,063 | New |
| Geode Capital Management, LLC | 33,307 | $12.1K | 0.00% | 00.0% | Unchanged |
| GWM Advisors LLC | 25,692 | $9.33K | 0.00% | +1,475+6.1% | Added |
| Hilton Capital Management, LLC | 25,510 | $9.26K | 0.00% | +25,510 | New |
| PKS Advisory Services, LLC | 19,500 | $7.08K | 0.00% | +19,500 | New |
| UBS Group AG | 7,013 | $2.55K | 0.00% | −6,246−47.1% | Reduced |
| Citigroup Inc | 1,292 | $469 | 0.00% | +978+311.5% | Added |
| SBI Securities Co., Ltd. | 122 | $44 | 0.00% | −10−7.6% | Reduced |
| Vivo Capital, LLC | 0 | $0 | 0.00% | −6,173,439−100.0% | Sold out |
| PFM Health Sciences, LP | 0 | $0 | 0.00% | −1,972,073−100.0% | Sold out |
| Pivotal bioVenture Partners Investment Advisor LLC | 0 | $0 | 0.00% | −864,197−100.0% | Sold out |
| Landscape Capital Management, L.L.C. | 0 | $0 | 0.00% | −347,408−100.0% | Sold out |
| Dauntless Investment Group, LLC | 0 | $0 | 0.00% | −324,389−100.0% | Sold out |
| Soleus Capital Management, L.P. | 0 | $0 | 0.00% | −192,670−100.0% | Sold out |
| Sectoral Asset Management Inc | 0 | $0 | 0.00% | −117,691−100.0% | Sold out |
| Marex Group plc | 0 | $0 | 0.00% | −45,000−100.0% | Sold out |
| Citadel Advisors LLC | 0 | $0 | 0.00% | −28,866−100.0% | Sold out |
| Jane Street Group, LLC | 0 | $0 | 0.00% | −25,946−100.0% | Sold out |
| Acadian Asset Management LLC | 0 | $0 | 0.00% | −23,366−100.0% | Sold out |
| Cubist Systematic Strategies, LLC | 0 | $0 | 0.00% | −13,096−100.0% | Sold out |
| Two Sigma Securities, LLC | 0 | $0 | 0.00% | −10,385−100.0% | Sold out |
| Raymond James Financial Inc | 0 | $0 | 0.00% | −1,000−100.0% | Sold out |