CTRM · Castor Maritime Inc.
$1.89
+0.00 (+0.00%)
At close · Jul 29
Market Cap
$18.26M
Shares
9.66M
Institutional ownership from SEC Form 13F filings. Investment managers with more than $100 million in U.S. equities must disclose their positions every quarter, within 45 days of quarter-end, so the holdings shown can lag the market by up to a quarter.
The Jun 30, 2026 filing window is
still open — showing the latest known positions. Funds that have not filed yet
carry their prior-quarter positions; a fund that filed without this stock counts
as sold out.
Holders: 22
Total Value: $810,768
Total Shares: 437,860
Institutional Ownership Trend
10 quarters
Holder Concentration
Across 21 13F filersTop Holder
55.2%
of institutional value
Top 5
91.0%
of institutional value
Top 10
99.9%
of institutional value
HHI
3,485
Highly concentrated
| Holder | Value (USD) | % of 13F | Shares | Type | Discretion | Filed | Open | |||
|---|---|---|---|---|---|---|---|---|---|---|
| Small TOWERVIEW LLC | $444,000 | 54.76% | 240,000 | Shares | Sole | 2026-05-05 | ||||
| Large RENAISSANCE TECHNOLOGIES LLC | $136,657 | 16.86% | 73,869 | Shares | Sole | 2026-05-14 | ||||
| Mega CITADEL ADVISORS LLC | $68,635 | 8.47% | 37,100 | Call | Defined | 2026-05-15 | ||||
| Mega SUSQUEHANNA INTERNATIONAL GROUP, LLP | $43,845 | 5.41% | 23,700 | Call | Other | 2026-05-15 | ||||
| Mega GOLDMAN SACHS GROUP INC | $38,999 | 4.81% | 21,081 | Shares | Defined | 2026-05-15 | ||||
| Small Apriem Advisors | $35,150 | 4.34% | 19,000 | Shares | Sole | 2026-05-15 | ||||
| Large Centiva Capital, LP | $20,514 | 2.53% | 11,089 | Shares | Sole | 2026-05-14 | ||||
| Mid SIMPLEX TRADING, LLC | $10,874 | 1.34% | 5,878 | Shares | Sole | 2026-05-14 | ||||
| Large TD Waterhouse Canada Inc. | $5,880 | 0.73% | 2,800 | Shares | Defined | 2026-07-27 | ||||
| Mega UBS Group AG | $4,119 | 0.51% | 2,227 | Shares | Defined | 2026-05-05 | ||||
| Mid GROUP ONE TRADING LLC | $1,241 | 0.15% | 671 | Shares | Sole | 2026-05-13 | ||||
| Mega MORGAN STANLEY | $469 | 0.06% | 254 | Shares | Defined | 2026-05-15 | ||||
| Mid SBI Securities Co., Ltd. Broker-Dealer | $212 | 0.03% | 101 | Shares | Defined | 2026-07-23 | ||||
| Small WOLFF WIESE MAGANA LLC | $42 | 0.01% | 20 | Shares | Sole | 2026-07-13 | ||||
| Mid Allworth Financial LP | $37 | 0.00% | 20 | Shares | Sole | 2026-05-15 | ||||
| Mid Farther Finance Advisors, LLC | $31 | 0.00% | 15 | Shares | Sole | 2026-07-17 | ||||
| Large Federation des caisses Desjardins du Quebec | $18 | 0.00% | 10 | Shares | Defined | 2026-05-14 | ||||
| Mid Parallel Advisors, LLC | $18 | 0.00% | 10 | Shares | Sole | 2026-05-07 | ||||
| Micro GILL CAPITAL PARTNERS, LLC | $11 | 0.00% | 6 | Shares | Sole | 2026-04-13 | ||||
| Small Cape Investment Advisory, Inc. | $8 | 0.00% | 4 | Shares | Sole | 2026-07-23 | ||||
| Small Caitong International Asset Management Co., Ltd | $7 | 0.00% | 4 | Shares | Sole | 2026-05-11 | ||||
| Large Russell Investments Group, Ltd. | $1 | 0.00% | 1 | Shares | Defined | 2026-05-08 | ||||
| No holders match your search. | ||||||||||