DOSSIER · 13F Holders · Q1 2026
C3IS INC
2 institutions still hold C3IS INC as of Q1 2026. Tracked across SEC 13F-HR filings, with insider and 13D/G activity surfaced alongside.
CUSIP Y18284177·2 13F holders·last filed Mar 31, 2026
AI Holders Summary · Q1 2026
2 institutions reported C3IS INC in Q1 2026. StoneX Group Inc. leads at 87.4% of the visible book.
Top holders
Sorted by position value. Source: SEC EDGAR 13F-HR filings.