We are live on ! Find out more
CTRM icon

Castor Maritime
CTRM

18 hedge funds and large institutions have $778K invested in Castor Maritime in 2025 Q3 according to their latest regulatory filings, with 2 funds opening new positions, 3 increasing their positions, 4 reducing their positions, and 0 closing their positions.

New
Increased
Maintained
Reduced
Closed

200% more call options, than puts

Call options by funds: $6K | Put options by funds: $2K

6% more funds holding

Funds holding: 17 → 18 (+1)

0.26% less ownership

Funds ownership: 4.13% → 3.87% (-0.26%)

9% less capital invested

Capital invested by funds: $853K → $778K (-$74.2K)

25% less repeat investments, than reductions

Existing positions increased: 3 | Existing positions reduced: 4

Holders
18
Holders Change
+1
Holders Change %
+5.88%
% of All Funds
0.24%
Holding in Top 10
–
Holding in Top 10 Change
–
Holding in Top 10 Change %
–
% of All Funds
–
New
2
Increased
3
Reduced
4
Closed
–
Calls
$6K
Puts
$2K
Net Calls
+$4K
Net Calls Change
-$68K

Top Buyers

Rank Fund Capital Flow
1
Renaissance Technologies
Renaissance Technologies
New York
+$4.37K
2
Simplex Trading
Simplex Trading
Illinois
+$3.89K
3
LFG
Larson Financial Group
Missouri
+$524
4
Group One Trading
Group One Trading
Illinois
+$474
5
UBS Group
UBS Group
Switzerland
+$111

Top Sellers

Rank Fund Capital Flow
1
Susquehanna International Group
Susquehanna International Group
Pennsylvania
-$54.8K
2
Morgan Stanley
Morgan Stanley
New York
-$7.43K
3
Goldman Sachs
Goldman Sachs
New York
-$1.54K
4
SS
SBI Securities
Japan
-$2
Name Holding Trade Value Shares
Change 		Change in
Stake
TL
1
TowerView LLC
New York
$499K – – –
Renaissance Technologies
2
Renaissance Technologies
New York
$88.8K +$4.37K +2,000 +5%
Goldman Sachs
3
Goldman Sachs
New York
$60K -$1.54K -706 -2%
AA
4
Apriem Advisors
California
$39.5K – – –
Susquehanna International Group
5
Susquehanna International Group
Pennsylvania
$31.9K -$54.8K -25,101 -62%
Simplex Trading
6
Simplex Trading
Illinois
$28K +$3.89K +1,782 +15%
Morgan Stanley
7
Morgan Stanley
New York
$18.9K -$7.43K -3,402 -27%
FCMT
8
Founders Capital Management (Texas)
Texas
$5.82K – – –
Group One Trading
9
Group One Trading
Illinois
$5.39K +$474 +217 +9%
LFG
10
Larson Financial Group
Missouri
$499 +$524 +240 New
SS
11
SBI Securities
Japan
$241 -$2 -1 -0.9%
UBS Group
12
UBS Group
Switzerland
$106 +$111 +51 New
AF
13
Allworth Financial
California
$42 – – –
SIS
14
Strategic Investment Solutions
Illinois
$42 – – –
WWM
15
Wolff Wiese Magana
California
$42 – – –
FDCDDQ
16
Federation des caisses Desjardins du Quebec
Quebec, Canada
$21 – – –
PA
17
Parallel Advisors
California
$21 – – –
CIA
18
Cape Investment Advisory
Georgia
$8 – – –

CTRM Hedge Fund Activity: Q3 2025 in Review

18 of the 7,620 institutional investors tracked by Wall St. Rank reported a position in Castor Maritime (CTRM) for Q3 2025, worth a combined $778K — down 8.7% from $853K a quarter earlier.

Buyers outnumbered sellers: 2 funds opened new CTRM positions and 0 closed out — a net gain of 2 holders — while 3 added to existing stakes and 4 trimmed.

The largest buyer was Renaissance Technologies, adding an estimated $4.37K. The largest seller was Susquehanna International Group, cutting an estimated $54.8K.

  • 18 institutional investors held Castor Maritime (CTRM) as of Q3 2025, up from 17 in Q2 2025.
  • Funds reported $778K of Castor Maritime stock for Q3 2025, down 8.7% quarter-over-quarter.
  • 2 funds opened new Castor Maritime positions in Q3 2025 and 0 closed out, a net change of +2 holders.
  • The largest Castor Maritime buyer in Q3 2025 was Renaissance Technologies, an estimated $4.37K added.
  • The largest Castor Maritime seller in Q3 2025 was Susquehanna International Group, an estimated $54.8K sold.

Based on aggregated 13F filings for Q3 2025.