Castor Maritime Inc.
CTRM- Exchange
- Nasdaq
- Industry
- Deep Sea Foreign Transportation of Freight
- SEC CIK
- 0001720161
No open-market purchases or sales by Castor Maritime Inc. insiders were filed in the last 90 days; 25 institutions reported holding it in 13F filings for Q2 2026, worth $902.9K in total; no superinvestor holds it.
Q4 2025 vs. Q3 2025
How the institutions holding Castor Maritime Inc. changed between Q3 2025 and Q4 2025.
All holders in Q4 2025All holders in Q3 2025
| Measure | Q3 2025 | Q4 2025 | Change |
|---|---|---|---|
| Holders | 18 | 25 | +7 |
| Shares | 374.3K | 494.0K | +119.7K (+32.0%) |
| Value | $778.5K | $1.02M | +$244.5K (+31.4%) |
New holders (10)
Institutions that held Castor Maritime Inc. at the end of Q4 2025 but not at the end of Q3 2025.
| Institution | Shares | Value | % of portfolio |
|---|---|---|---|
| Citadel Advisors LLC | 73,357 | $151.8K | 0.00% |
| Jane Street Group, LLC | 17,898 | $37.0K | 0.00% |
| Two Sigma Securities, LLC | 17,297 | $35.8K | 0.00% |
| Virtu Financial LLC | 11,852 | $25.0K | 0.00% |
| Garton & Associates Financial Advisors LLC | 2,000 | $4.14K | 0.00% |
| Tower Research Capital LLC (TRC) | 122 | $253 | 0.00% |
| Robinswood Financial LLC | 15 | $31 | 0.00% |
| Jones Financial Companies LLLP | 6 | $12 | 0.00% |
| Russell Investments Group, Ltd. | 1 | $2 | 0.00% |
| Navalign, LLC | 1 | $2 | 0.00% |
Sold out (3)
Institutions that held Castor Maritime Inc. at the end of Q3 2025 and filed for Q4 2025 without it.
| Institution | Shares, Q3 2025 | Value, Q3 2025 |
|---|---|---|
| Founders Capital Management | 2,800 | $5.82K |
| Larson Financial Group LLC | 240 | $499 |
| Strategic Investment Solutions, Inc. | 20 | $42 |