Io BiotechIOBTQ
13F holders, Q4 2025 (December 31)At the end of Q4 2025, 22 institutions reported holding Io Biotech Inc. (IOBTQ) in their 13F filings, up 1 from Q3 2025. 5 opened new positions and 4 sold out. The largest holders were Novo Holdings A/S ($1.5M), Ikarian Capital, LLC ($844K) and Bank of America Corp. ($486K). 2 famous investors held it, including Jim Simons / Peter Brown (0.0% of Renaissance Technologies's portfolio) and Israel Englander (0.0% of Millennium Management's portfolio).
- Company
- Io Biotech Inc.
- CUSIP
- 449778109
- Latest filing quarter
- Q1 2026
History
Number of 13F holders
Total Exit/New Position Q3 2025 → Q4 2025
| Institutions | Total Value | |
|---|---|---|
| New Positions | 5 | $632K |
| Exits | 4 | $155K |
All 13F filers, Q3 2025 → Q4 2025: 1,185,837 shares bought and 3,233,529 shares sold, net −2,047,692 shares. Counts holders who added, trimmed, opened or closed a position; split-adjusted.
Ownership 22 holders
| Novo Holdings A/S | 0.12% | No change | 2,512,453 | $1.5M |
| Ikarian Capital, LLC | 0.11% | Reduce -9.1% | 1,386,565 | $844K |
| Bank of America Corp. | 0.00% | No change | 799,953 | $486K |
| Morgan Stanley | 0.00% | Reduce -19.3% | 539,182 | $328K |
| Beacon Pointe Advisors, LLC | 0.00% | New | 506,000 | $308K |
| Boothbay Fund Management, LLC | 0.01% | Reduce -23.6% | 451,852 | $275K |
| Dauntless Investment Group, LLC | 1.01% | New | 451,641 | $275K |
| Marshall Wace, LLP | 0.00% | Reduce -59.2% | 429,338 | $262K |
| Renaissance Technologies | 0.00% | Reduce -62.1% | 207,601 | $126K |
| Millennium Management | 0.00% | Reduce -90.0% | 138,716 | $84K |
| Citigroup Inc. | 0.00% | Add +8525.9% | 111,447 | $68K |
| Bridgeway Capital Management, LLC | 0.00% | No change | 75,000 | $46K |
| Two Sigma Securities, LLC | 0.00% | New | 44,757 | $27K |
| UBS Group AG | 0.00% | Add +521.4% | 43,578 | $27K |
| Geode Capital Management, LLC | 0.00% | No change | 33,307 | $20K |
| Hilton Capital Management, LLC | 0.00% | No change | 25,510 | $16K |
| ADAR1 Capital Management, LLC | 0.00% | New | 24,964 | $15K |
| PKS Advisory Services, LLC | 0.00% | Add +2.6% | 20,000 | $12K |
| Virtu Financial LLC | 0.00% | Reduce -51.2% | 19,078 | $12K |
| XTX Topco Ltd | 0.00% | Reduce -91.2% | 15,864 | $10K |
| Scientech Research LLC | 0.00% | New | 11,255 | $7K |
| SBI Securities Co., Ltd. | 0.00% | No change | 122 | $74 |
"% of holder's portfolio" is IOBTQ's weight in each manager's 13F, not the share of Io Biotech Inc. the manager owns.