C3IS INC
COM NEW · CUSIP Y18284177
0
institutional holders
-3 vs Q1 2026
—reported value*
0 new
0 added
0 reduced
3 sold out
net sold ≈ $72.9k (-88.5k shares)
* Summed across managers. Shares that two managers' reports both contain – a subsidiary's holdings that its parent's report includes too, or a sub-adviser's in its client's – are counted once. Holder counts are more reliable.
Trends to Q2 2026
Institutional holders
Managers reporting a position, each quarter
Numbers
| Quarter | Holders |
|---|---|
| Q1 2026 | 3 |
| Q2 2026 | 0 |
Biggest buyers
| None |
Biggest sellers
| HRT FINANCIAL LP | Sold out | -76.5k |
| StoneX Group Inc. | Sold out | -10.4k |
| SUMMIT SECURITIES GROUP LLC | Sold out | -1.5k |
Major shareholders (over 5%)
Anyone who owns more than 5% of a class of the company's shares has to say so: on Schedule 13D if they may try to influence or control the company, on 13G if they're a passive investor, and update it as the stake changes. Each holder's latest filing, from 19 Dec 2024 on; percentages are of the share class, as the holder worked them out.
| Holder | Stake |
|---|---|
Imperial Petroleum Inc./Marshall Islands
13D · may seek influence
filed 2026-02-04
Stated purposeThe Reporting Person involved in the securities described in this Schedule 13D in connection with the Spin-Off Distribution, and intends to review its investment in the Issuer on a continuing basis. The Reporting Person may from time to time acquire additional securities of the Issuer, or retain or sell all or portion of the shares then held by the Reporting Person, in the open market, block trades, underwritten public offerings or privately negotiated transactions. Any actions the Reporting Person might undertake with respect to its investment in the Issuer may be made at any time and from time to time and will be dependent upon the Reporting Person's review of numerous factors, including, but not limited to: ongoing evaluation of the Issuer's business, financial condition, operations, pr… Full filing |
81.9% |
| Ayrton Capital LLC 13G · institution new · filed 2026-02-11 | 10.0% |
| Alta Partners LLC 13G · passive investor new · filed 2026-02-27 | 5.2% |
Holders, Q2 2026
| Manager | Shares | Change |
|---|