C3ISCISS
13F holders, Q3 2025 (September 30)3holders −1
2new positions
3sold out
1famous investor
$2.14avg. 13F price*
At the end of Q3 2025, 3 institutions reported holding C3IS Inc. (CISS) in their 13F filings, down 1 from Q2 2025. 2 opened new positions and 3 sold out. The largest holders were Wexford Capital LP ($240K), Citadel Advisors ($29K) and FNY Investment Advisers, LLC ($5K). One famous investor held it Ken Griffin (0.0% of Citadel Advisors's portfolio).
- Company
- C3IS Inc.
- CUSIP
- Y18284169
- Latest filing quarter
- Q4 2025
History
Number of 13F holders
Total Exit/New Position Q2 2025 → Q3 2025
| Institutions | Total Value | |
|---|---|---|
| New Positions | 2 | $34K |
| Exits | 3 | $57K |
All 13F filers, Q2 2025 → Q3 2025: 107,735 shares bought and 17,401 shares sold, net +90,334 shares. Counts holders who added, trimmed, opened or closed a position; split-adjusted.
Ownership 3 holders
| Wexford Capital LP | 0.07% | Add +460.1% | 112,014 | $240K |
| Citadel Advisors | 0.00% | New | 13,221 | $29K |
| FNY Investment Advisers, LLC | 0.00% | New | 2,500 | $5K |
"% of holder's portfolio" is CISS's weight in each manager's 13F, not the share of C3IS Inc. the manager owns.