DaveManuel.com · Institutional Ownership · Who Owns It
CASTOR MARITIME INC (CTRM)
Institutional ownership reported to the SEC as of Q2 2026, across 31 quarters.
25
Reporting holders
$1.1M
Reported value
10.1%
Calls
4.0%
Puts
+4
Holder change
Calls and puts are the parts of reported value carried in derivative lines rather than shares, and they point in opposite directions: a manager holding calls is positioned for the security, one holding puts against it - or hedging shares they already own, which is why index funds carry so many. Most sites add the two together and report one figure, which averages away the only interesting part.
Holders
| Filer | Value | Shares | Their book | Held | Change |
|---|---|---|---|---|---|
| TOWERVIEW LLC | $504.0K | 240,000 | 0.33% | 8q | HELD |
| RENAISSANCE TECHNOLOGIES LLC | $136.1K | 64,817 | 0.00% | 10q | -12.3%-$19.0K |
| CITADEL ADVISORS LLC | $96.1K incl. $41.6K options PUT | 26,060 | 0.00% | 3q | HELD |
| GROUP ONE TRADING LLC | $76.0K incl. $74.8K options CALL | 571 | 0.00% | 8q | -14.9%-$13.3K |
| SUSQUEHANNA INTERNATIONAL GROUP, LLP | $57.4K incl. $31.1K options CALL | 12,558 | 0.00% | 9q | HELD |
| NewEdge Advisors, LLC | $46.0K | 21,912 | 0.00% | new | NEW |
| GOLDMAN SACHS GROUP INC | $44.5K | 21,202 | 0.00% | 7q | +0.6% |
| Apriem Advisors | $39.9K | 19,000 | 0.00% | 10q | HELD |
| Centiva Capital, LP | $25.6K | 12,248 | 0.00% | 2q | +10.5%+$2.4K |
| SIMPLEX TRADING, LLC | $18.7K incl. $840 options CALL+PUT | 8,510 | 0.00% | 6q | +44.8%+$5.8K |
| TD Waterhouse Canada Inc. | $5.9K | 2,800 | 0.00% | new | NEW |
| MORGAN STANLEY | $533 | 254 | 0.00% | 10q | HELD |
| SBI Securities Co., Ltd. | $212 | 101 | 0.00% | 7q | HELD |
| JONES FINANCIAL COMPANIES LLLP | $53 | 25 | 0.00% | new | NEW |
| Allworth Financial LP | $42 | 20 | 0.00% | 5q | HELD |
| OSAIC HOLDINGS, INC. | $42 | 20 | 0.00% | new | NEW |
| WOLFF WIESE MAGANA LLC | $42 | 20 | 0.00% | 10q | HELD |
| Caitong International Asset Management Co., Ltd | $34 | 16 | 0.00% | 2q | +300.0% |
| Farther Finance Advisors, LLC | $32 | 15 | 0.00% | 2q | HELD |
| Parallel Advisors, LLC | $21 | 10 | 0.00% | 5q | HELD |
| Federation des caisses Desjardins du Quebec | $21 | 10 | 0.00% | 5q | HELD |
| GILL CAPITAL PARTNERS, LLC | $13 | 6 | 0.00% | 2q | HELD |
| Cape Investment Advisory, Inc. | $8 | 4 | 0.00% | new | NEW |
| Russell Investments Group, Ltd. | $2 | 1 | 0.00% | 3q | HELD |
| Steward Partners Investment Advisory, LLC | $2 | 1 | 0.00% | new | NEW |
Quarter by quarter
Coverage begins with the quarter ending 2018-12-31. Earlier filings exist only as occasional late amendments, too sparse to describe a market, so they are not shown.
| Quarter | Holders | Value | Shares | New | Added | Trimmed | Options |
|---|---|---|---|---|---|---|---|
| Q3 2026 | 6 | $336 | 166 | 0 | 0 | 2 | 0.0% |
| Q2 2026 | 25 | $1.1M | 430,181 | 7 | 4 | 2 | 14.1% |
| Q1 2026 | 21 | $910.7K | 374,271 | 4 | 3 | 6 | 24.0% |
| Q4 2025 | 25 | $1.5M | 493,956 | 11 | 3 | 3 | 31.2% |
| Q3 2025 | 18 | $786.7K | 374,268 | 2 | 3 | 4 | 1.0% |
| Q2 2025 | 19 | $932.6K | 399,199 | 4 | 4 | 2 | 8.6% |
| Q1 2025 | 18 | $1.0M | 405,822 | 6 | 4 | 3 | 9.9% |
| Q4 2024 | 19 | $1.1M | 391,031 | 2 | 6 | 1 | 0.6% |
| Q3 2024 | 22 | $992.3K | 156,344 | 5 | 4 | 4 | 33.6% |
| Q2 2024 | 21 | $983.4K | 125,723 | 9 | 4 | 4 | 41.2% |
| Q1 2024 | 18 | $383.1K | 111,607 | 18 | 0 | 0 | 0.0% |
| Q4 2023 | 31 | $560.0K | 1,126,278 | 9 | 5 | 4 | 14.4% |
| Q3 2023 | 28 | $560.9K | 903,388 | 3 | 7 | 3 | 30.0% |
| Q2 2023 | 27 | $627.8K | 880,792 | 3 | 3 | 6 | 37.2% |
| Q1 2023 | 28 | $1.9M | 1,870,022 | 4 | 4 | 5 | 23.4% |
| Q4 2022 | 34 | $3.3M | 1,705,302 | 9 | 7 | 5 | 41.8% |
| Q3 2022 | 27 | $4.6M | 1,290,767 | 3 | 3 | 7 | 68.6% |
| Q2 2022 | 29 | $6.0M | 1,454,442 | 8 | 8 | 5 | 67.2% |
| Q1 2022 | 26 | $5.9M | 912,615 | 7 | 3 | 12 | 71.4% |
| Q4 2021 | 27 | $9.8M | 4,443,141 | 9 | 8 | 3 | 35.9% |
| Q3 2021 | 29 | $11.8M | 2,731,883 | 11 | 6 | 6 | 43.4% |
| Q2 2021 | 27 | $14.5M | 4,673,179 | 31 | 0 | 0 | 15.9% |
| Q1 2021 | 33 | $7.7M | 10,156,485 | 27 | 4 | 0 | 0.0% |
| Q4 2020 | 17 | $2.6M | 14,332,899 | 14 | 1 | 2 | 0.0% |
| Q3 2020 | 5 | $324.0K | 2,103,918 | 2 | 3 | 0 | 0.0% |
| Q2 2020 | 7 | $755.0K | 1,883,949 | 6 | 1 | 0 | 0.0% |
| Q1 2020 | 2 | $89.0K | 130,058 | 0 | 2 | 0 | 0.0% |
| Q4 2019 | 5 | $259.0K | 140,658 | 3 | 2 | 0 | 0.0% |
| Q3 2019 | 3 | $166.0K | 57,512 | 2 | 0 | 1 | 0.0% |
| Q2 2019 | 2 | $106.0K | 24,801 | 1 | 1 | 0 | 0.0% |
| Q1 2019 | 2 | $3.0K | 647 | 2 | 0 | 0 | 0.0% |