C3is Inc.
CISS- Exchange
- Nasdaq
- Industry
- Deep Sea Foreign Transportation of Freight
- SEC CIK
- 0001951067
No open-market purchases or sales by C3is Inc. insiders were filed in the last 90 days; 3 institutions reported holding it in 13F filings for Q2 2026, worth $123.0K in total; no superinvestor holds it.
Q3 2025 vs. Q2 2025
How the institutions holding C3is Inc. changed between Q2 2025 and Q3 2025.
All holders in Q3 2025All holders in Q2 2025
| Measure | Q2 2025 | Q3 2025 | Change |
|---|---|---|---|
| Holders | 4 | 3 | −1 |
| Shares | 37.4K | 127.7K | +90.3K (+241.5%) |
| Value | $122.7K | $273.7K | +$151.0K (+123.1%) |
New holders (2)
Institutions that held C3is Inc. at the end of Q3 2025 but not at the end of Q2 2025.
| Institution | Shares | Value | % of portfolio |
|---|---|---|---|
| Citadel Advisors LLC | 13,221 | $28.6K | 0.00% |
| FNY Investment Advisers, LLC | 2,500 | $5.00K | 0.00% |
Sold out (3)
Institutions that held C3is Inc. at the end of Q2 2025 and filed for Q3 2025 without it.
| Institution | Shares, Q2 2025 | Value, Q2 2025 |
|---|---|---|
| Towerview LLC | 14,297 | $46.9K |
| UBS Group AG | 3,100 | $10.2K |
| SBI Securities Co., Ltd. | 4 | $13 |