Io BiotechIOBTQ
13F holders, Q1 2025 (March 31)At the end of Q1 2025, 22 institutions reported holding Io Biotech Inc. (IOBTQ) in their 13F filings, down 5 from Q4 2024. 1 opened new positions and 6 sold out. The largest holders were Vivo Capital, LLC ($6.7M), Novo Holdings A/S ($3.7M) and PFM Health Sciences, LP ($2.6M). 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 Q4 2024 → Q1 2025
| Institutions | Total Value | |
|---|---|---|
| New Positions | 1 | $26K |
| Exits | 6 | $111K |
All 13F filers, Q4 2024 → Q1 2025: 73,763 shares bought and 700,008 shares sold, net −626,245 shares. Counts holders who added, trimmed, opened or closed a position; split-adjusted.
Ownership 22 holders
| Vivo Capital, LLC | 0.89% | No change | 6,173,439 | $6.7M |
| Novo Holdings A/S | 0.28% | No change | 3,354,449 | $3.7M |
| PFM Health Sciences, LP | 0.20% | No change | 2,341,107 | $2.6M |
| Marshall Wace, LLP | 0.00% | No change | 2,105,262 | $2.3M |
| Bank of America Corp. | 0.00% | No change | 1,651,515 | $1.8M |
| Pivotal bioVenture Partners Investment Advisor LLC | 0.76% | No change | 864,197 | $942K |
| Morgan Stanley | 0.00% | Reduce -8.1% | 789,461 | $861K |
| Dauntless Investment Group, LLC | 2.74% | Reduce -8.8% | 681,446 | $743K |
| Landscape Capital Management, L.L.C. | 0.04% | Reduce -9.5% | 400,234 | $436K |
| Soleus Capital Management, L.P. | 0.02% | No change | 192,670 | $210K |
| Renaissance Technologies | 0.00% | Add +6.4% | 126,400 | $138K |
| Sectoral Asset Management Inc. | 0.08% | Add +26.7% | 95,000 | $104K |
| Bridgeway Capital Management, LLC | 0.00% | Reduce -56.9% | 75,000 | $82K |
| XTX Topco Ltd | 0.00% | Add +80.0% | 50,486 | $55K |
| Citadel Advisors | 0.00% | Reduce -83.2% | 45,555 | $50K |
| Marex Group Ltd | 0.00% | No change | 45,000 | $49K |
| Geode Capital Management, LLC | 0.00% | No change | 33,307 | $36K |
| Acadian Asset Management LLC | 0.00% | Reduce -49.1% | 30,858 | $33K |
| Jane Street Group, LLC | 0.00% | New | 23,717 | $26K |
| Vontobel Holding Ltd. | 0.00% | Reduce -38.7% | 20,029 | $22K |
| UBS Group AG | 0.00% | Reduce -73.7% | 12,355 | $13K |
| SBI Securities Co., Ltd. | 0.00% | No change | 130 | $142 |
"% of holder's portfolio" is IOBTQ's weight in each manager's 13F, not the share of Io Biotech Inc. the manager owns.