Io BiotechIOBTQ
13F holders, Q2 2025 (June 30)At the end of Q2 2025, 26 institutions reported holding Io Biotech Inc. (IOBTQ) in their 13F filings, up 4 from Q1 2025. 5 opened new positions and 1 sold out. The largest holders were Vivo Capital, LLC ($8.6M), Novo Holdings A/S ($4.7M) and Marshall Wace, LLP ($2.9M). 2 famous investors held it, including Jim Simons / Peter Brown (0.0% of Renaissance Technologies's portfolio) and Ken Griffin (0.0% of Citadel Advisors's portfolio).
- Company
- Io Biotech Inc.
- CUSIP
- 449778109
- Latest filing quarter
- Q1 2026
History
Number of 13F holders
Total Exit/New Position Q1 2025 → Q2 2025
| Institutions | Total Value | |
|---|---|---|
| New Positions | 5 | $68K |
| Exits | 1 | $22K |
All 13F filers, Q1 2025 → Q2 2025: 87,738 shares bought and 1,016,648 shares sold, net −928,910 shares. Counts holders who added, trimmed, opened or closed a position; split-adjusted.
Ownership 26 holders
| Vivo Capital, LLC | 0.88% | No change | 6,173,439 | $8.6M |
| Novo Holdings A/S | 0.33% | No change | 3,354,449 | $4.7M |
| Marshall Wace, LLP | 0.00% | No change | 2,105,262 | $2.9M |
| PFM Health Sciences, LP | 0.24% | Reduce -15.8% | 1,972,073 | $2.7M |
| Bank of America Corp. | 0.00% | Reduce -2.2% | 1,615,074 | $2.2M |
| Pivotal bioVenture Partners Investment Advisor LLC | 0.74% | No change | 864,197 | $1.2M |
| Morgan Stanley | 0.00% | Reduce -17.2% | 653,678 | $909K |
| Landscape Capital Management, L.L.C. | 0.04% | Reduce -13.2% | 347,408 | $483K |
| Dauntless Investment Group, LLC | 2.12% | Reduce -52.4% | 324,389 | $451K |
| Soleus Capital Management, L.P. | 0.02% | No change | 192,670 | $268K |
| Renaissance Technologies | 0.00% | Add +10.2% | 139,300 | $194K |
| Sectoral Asset Management Inc. | 0.11% | Add +23.9% | 117,691 | $164K |
| Bridgeway Capital Management, LLC | 0.00% | No change | 75,000 | $104K |
| Marex Group Ltd | 0.00% | No change | 45,000 | $63K |
| Geode Capital Management, LLC | 0.00% | No change | 33,307 | $46K |
| XTX Topco Ltd | 0.00% | Reduce -42.2% | 29,189 | $41K |
| Citadel Advisors | 0.00% | Reduce -36.6% | 28,866 | $40K |
| Jane Street Group, LLC | 0.00% | Add +9.4% | 25,946 | $36K |
| NewEdge Advisors, LLC | 0.00% | New | 24,217 | $34K |
| Acadian Asset Management LLC | 0.00% | Reduce -24.3% | 23,366 | $32K |
| UBS Group AG | 0.00% | Add +7.3% | 13,259 | $18K |
| Cubist Systematic Strategies, LLC | 0.00% | New | 13,096 | $18K |
| Two Sigma Securities, LLC | 0.00% | New | 10,385 | $14K |
| Raymond James Financial Inc. | 0.00% | New | 1,000 | $1K |
| Citigroup Inc. | 0.00% | New | 314 | $436 |
| SBI Securities Co., Ltd. | 0.00% | Add +1.5% | 132 | $183 |
"% of holder's portfolio" is IOBTQ's weight in each manager's 13F, not the share of Io Biotech Inc. the manager owns.