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, Q1 2026
Institutional positions in IO Biotech, Inc. as of Mar 31, 2026. 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
IOBT is no longer listed, so this page shows Q1 2026. 13F filings for later quarters list far fewer holders.
- Institutional holders
- 12
- −10 vs. Q4 2025
- Shares held
- 3.39M
- −4.46M (−56.8%) vs. Q4 2025
- Total value
- $199.0K
- −$4.58M (−95.8%) vs. Q4 2025
- New holders
- 2
- 2 more added
- Sold out
- 12
- 5 more reduced
Compare with Q4 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, Q1 2026
Shares, value and share of portfolio for each institution holding IO Biotech, Inc.; share changes are against Q4 2025.
| Institution | Shares | Value | % of portfolio | Change in shares | Action |
|---|---|---|---|---|---|
| UBS Group AG | 30,980 | $1.83K | 0.00% | −12,598−28.9% | Reduced |
| Geode Capital Management, LLC | 33,307 | $1.96K | 0.00% | 00.0% | Unchanged |
| Beacon Pointe Advisors, LLC | 42,600 | $2.50K | 0.00% | −463,400−91.6% | Reduced |
| Jane Street Group, LLC | 57,974 | $3.40K | 0.00% | +57,974 | New |
| Citigroup Inc | 72,495 | $4.25K | 0.00% | −38,952−35.0% | Reduced |
| Millennium Management LLC | 194,158 | $11.4K | 0.00% | +55,442+40.0% | Added |
| Morgan Stanley | 206,215 | $12.1K | 0.00% | −332,967−61.8% | Reduced |
| XTX Topco Ltd | 265,792 | $15.6K | 0.00% | +249,928+1,575.4% | Added |
| Marshall Wace, LLP | 301,291 | $18.1K | 0.00% | −128,047−29.8% | Reduced |
| Gsa Capital Partners LLP | 348,352 | $20.0K | 0.00% | +348,352 | New |
| Boothbay Fund Management, LLC | 451,852 | $26.5K | 0.00% | 00.0% | Unchanged |
| Ikarian Capital, LLC | 1,386,565 | $81.4K | 0.01% | 00.0% | Unchanged |
| Novo Holdings A/S | 0 | $0 | 0.00% | −2,512,453−100.0% | Sold out |
| Bank of America Corp | 0 | $0 | 0.00% | −799,953−100.0% | Sold out |
| Dauntless Investment Group, LLC | 0 | $0 | 0.00% | −451,641−100.0% | Sold out |
| Renaissance Technologies LLC | 0 | $0 | 0.00% | −207,601−100.0% | Sold out |
| Bridgeway Capital Management, LLC | 0 | $0 | 0.00% | −75,000−100.0% | Sold out |
| Two Sigma Securities, LLC | 0 | $0 | 0.00% | −44,757−100.0% | Sold out |
| Hilton Capital Management, LLC | 0 | $0 | 0.00% | −25,510−100.0% | Sold out |
| ADAR1 Capital Management, LLC | 0 | $0 | 0.00% | −24,964−100.0% | Sold out |
| PKS Advisory Services, LLC | 0 | $0 | 0.00% | −20,000−100.0% | Sold out |
| Virtu Financial LLC | 0 | $0 | 0.00% | −19,078−100.0% | Sold out |
| Scientech Research LLC | 0 | $0 | 0.00% | −11,255−100.0% | Sold out |
| SBI Securities Co., Ltd. | 0 | $0 | 0.00% | −122−100.0% | Sold out |