C3is Inc NASDAQ NMS - GLOBAL MARKET:CISS
Institutional holders, quarter-over-quarter share deltas, and new and closed positions disclosed in Form 13F. Period 2025-12-31 · prior 2025-09-30.
New Positions(4)
| Manager | Shares | Δ Shares | Value | Δ Value | % Δ |
|---|---|---|---|---|---|
| L1 Global Manager Pty Ltd | 861,260 | +861,260 | $198.1K | +$198.1K | — |
| Sassicaia Capital Advisers LLC | 19,641 | +19,641 | $4.5K | +$4.5K | — |
| UBS Group AG | 6,131 | +6,131 | $1.4K | +$1.4K | — |
| FNY Investment Advisers, LLC | 2,500 | +2,500 | $5 | +$5 | — |
Added To(1)
| Manager | Shares | Δ Shares | Value | Δ Value | % Δ |
|---|---|---|---|---|---|
| CITADEL ADVISORS LLC | 47,635 | +34,414 | $11.0K | -$17.6K | 260.3% |
Reduced(1)
| Manager | Shares | Δ Shares | Value | Δ Value | % Δ |
|---|---|---|---|---|---|
| WEXFORD CAPITAL LP | 112,014 | 0 | $25.8K | -$214.4K | 0.0% |
Top Holders by reported value
Ranked by the dollar value reported on the latest Form 13F. Share counts reflect long positions as of 2025-12-31.
| Manager | Shares | $ Value | Δ Shares | QoQ % |
|---|---|---|---|---|
| L1 Global Manager Pty Ltd | 861,260 | $198.1K | +861,260 | — |
| WEXFORD CAPITAL LP | 112,014 | $25.8K | 0 | 0.0% |
| CITADEL ADVISORS LLC | 47,635 | $11.0K | +34,414 | 260.3% |
| Sassicaia Capital Advisers LLC | 19,641 | $4.5K | +19,641 | — |
| UBS Group AG | 6,131 | $1.4K | +6,131 | — |
| FNY Investment Advisers, LLC | 2,500 | $5 | +2,500 | — |
New & Closed Positions this quarter
No managers exited their positions this quarter.
Methodology
Form 13F is the SEC's quarterly disclosure for institutional investment managers exercising discretion over $100 million or more in qualifying U.S. equity securities. Managers must file within 45 days of each calendar quarter end, which is why holdings shown here reflect a snapshot at the period date — not real-time positioning.
Quarter-over-quarter deltas compare each manager's most recently reported share count for CISS against its prior-quarter count. New positions are entries where the prior count was zero; closed positions are entries where the current count is zero. Amendments (13F-HR/A) replace prior filings for the same period.
Source: SEC EDGAR Form 13F (XML information tables). Dollar values are as reported by the manager and may use mid-quarter pricing conventions. CUSIP-to-ticker resolution is best-effort.