C3is Inc. - CISS
Detailed investor-level table based on 13F positions.
Early Q4 2025 data: only 5 institutional holders reported so far. The full shareholder list will grow as more funds file with the SEC.
Methodology:
Market value and % of portfolio use SEC reported VALUE ($000).
For PUT/CALL positions this reflects reported underlying exposure, not premium cash paid/received.
Details.
Rows: 0
| Investor | History | Status | Shares held | Market value ($000) | % of portfolio | Previous % | Rank | Change in shares | % change in shares | Source | Date reported |
|---|---|---|---|---|---|---|---|---|---|---|---|
| JANE STREET GROUP, LLC | History | New | 689,157 | 23 | 0.0% | — | 1 | +689,157 | New | Q1 2024 | May 16, 2024 |
| CITADEL ADVISORS LLC | History | Added to | 564,090 | 19 | 0.0% | 0.0% | 2 | +548,130 | 3434.4% | Q1 2024 | May 15, 2024 |
| UBS Group AG | History | New | 117,011 | 4 | 0.0% | — | 3 | +117,011 | New | Q1 2024 | May 13, 2024 |
| Tower Research Capital LLC (TRC) | History | New | 50,818 | 1 | 0.0% | — | 5 | +50,818 | New | Q1 2024 | May 15, 2024 |
| JPMORGAN CHASE & CO | History | New | 50,007 | 1 | 0.0% | — | 4 | +50,007 | New | Q1 2024 | Dec 26, 2024 |
| SUSQUEHANNA INTERNATIONAL GROUP, LLP | History | Closed out | 0 | 0 | — | 0.0% | — | -30,844 | -100.0% | Q4 2023 | Feb 14, 2024 |
| OneDigital Investment Advisors LLC | History | New | 15,000 | 0 | — | — | — | +15,000 | New | Q1 2024 | May 10, 2024 |
| BOOTHBAY FUND MANAGEMENT, LLC | History | Closed out | 0 | 0 | — | 0.0% | — | -14,998 | -100.0% | Q4 2023 | Feb 14, 2024 |
| MORGAN STANLEY | History | Closed out | 0 | 0 | — | — | — | -315 | -100.0% | Q4 2023 | Aug 16, 2024 |
| Federation des caisses Desjardins du Quebec | History | Closed out | 0 | 0 | — | — | — | -25 | -100.0% | Q4 2023 | Aug 15, 2024 |
| GROUP ONE TRADING, L.P. | History | Added to | 113 | 0 | — | — | — | +12 | 11.88% | Q1 2024 | May 10, 2024 |
| BARCLAYS PLC | History | No change | 13 | 0 | — | — | — | 0 | 0.0% | Q1 2024 | Mar 24, 2026 |