Castor Maritime
CTRM
25 hedge funds and large institutions have $1.02M invested in Castor Maritime in 2025 Q4 according to their latest regulatory filings, with 10 funds opening new positions, 4 increasing their positions, 3 reducing their positions, and 3 closing their positions.
46,100% more call options, than puts
Call options by funds: $462K | Put options by funds: $1K
233% more first-time investments, than exits
New positions opened: 10 | Existing positions closed: 3
39% more funds holding
Funds holding: 18 → 25 (+7)
33% more repeat investments, than reductions
Existing positions increased: 4 | Existing positions reduced: 3
31% more capital invested
Capital invested by funds: $778K → $1.02M (+$244K)
1.24% more ownership
Funds ownership: 3.87% → 5.11% (+1.2%)
Top Buyers
| Rank | Fund | Capital Flow |
|---|---|---|
| 1 |
Citadel Advisors
Miami,
Florida
|
+$153K |
| 2 |
Susquehanna International Group
Bala Cynwyd,
Pennsylvania
|
+$44K |
| 3 |
Jane Street
New York
|
+$37.3K |
| 4 |
TSS
Two Sigma Securities
New York
|
+$36.1K |
| 5 |
VF
Virtu Financial
New York
|
+$24.7K |
Top Sellers
| Rank | Fund | Capital Flow |
|---|---|---|
| 1 |
Simplex Trading
Chicago,
Illinois
|
-$22.6K |
| 2 |
Morgan Stanley
New York
|
-$18.4K |
| 3 |
FCMT
Founders Capital Management (Texas)
Houston,
Texas
|
-$5.82K |
| 4 |
Renaissance Technologies
New York
|
-$4.38K |
| 5 |
LFG
Larson Financial Group
St Louis,
Missouri
|
-$499 |
CTRM Hedge Fund Activity: Q4 2025 in Review
25 of the 8,238 institutional investors tracked by Wall St. Rank reported a position in Castor Maritime (CTRM) for Q4 2025, worth a combined $1.02M — up 31% from $778K a quarter earlier.
Buyers outnumbered sellers: 10 funds opened new CTRM positions and 3 closed out — a net gain of 7 holders — while 4 added to existing stakes and 3 trimmed.
The largest buyer was Citadel Advisors, opening a new position worth an estimated $153K. The largest seller was Simplex Trading, cutting an estimated $22.6K.
- 25 institutional investors held Castor Maritime (CTRM) as of Q4 2025, up from 18 in Q3 2025.
- Funds reported $1.02M of Castor Maritime stock for Q4 2025, up 31% quarter-over-quarter.
- 10 funds opened new Castor Maritime positions in Q4 2025 and 3 closed out, a net change of +7 holders.
- The largest Castor Maritime buyer in Q4 2025 was Citadel Advisors, an estimated $153K added.
- The largest Castor Maritime seller in Q4 2025 was Simplex Trading, an estimated $22.6K sold.
Based on aggregated 13F filings for Q4 2025.