C3is
CISS
5 hedge funds and large institutions have $241K invested in C3is in 2025 Q4 according to their latest regulatory filings, with 3 funds opening new positions, 1 increasing their positions, reducing their positions, and 0 closing their positions.
150% more funds holding
Funds holding: 2 → 5 (+3)
131.28% more ownership
Funds ownership: 18.25% → 149.53% (+131%)
12% less capital invested
Capital invested by funds: $274K → $241K (-$33K)
Top Buyers
| Rank | Fund | Capital Flow |
|---|---|---|
| 1 |
Citadel Advisors
Miami,
Florida
|
+$63.7K |
| 2 |
SCA
Sassicaia Capital Advisers
Jericho,
New York
|
+$36.4K |
| 3 |
UBS Group
Zurich,
Switzerland
|
+$9.1K |
Top Sellers
| Rank | Fund | Capital Flow |
|---|---|---|
| 1 |
FIA
FNY Investment Advisers
New York
|
-$5K |
CISS Hedge Fund Activity: Q4 2025 in Review
5 of the 8,282 institutional investors tracked by Wall St. Rank reported a position in C3is (CISS) for Q4 2025, worth a combined $241K — down 12% from $274K a quarter earlier.
Buyers outnumbered sellers: 3 funds opened new CISS positions and 0 closed out — a net gain of 3 holders — while 1 added to existing stakes and 0 trimmed.
The largest buyer was Citadel Advisors, adding an estimated $63.7K. The largest seller was FNY Investment Advisers, cutting an estimated $5K.
- 5 institutional investors held C3is (CISS) as of Q4 2025, up from 2 in Q3 2025.
- Funds reported $241K of C3is stock for Q4 2025, down 12% quarter-over-quarter.
- 3 funds opened new C3is positions in Q4 2025 and 0 closed out, a net change of +3 holders.
- The largest C3is buyer in Q4 2025 was Citadel Advisors, an estimated $63.7K added.
- The largest C3is seller in Q4 2025 was FNY Investment Advisers, an estimated $5K sold.
Based on aggregated 13F filings for Q4 2025.