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CTRM CASTOR MARITIME INC

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Stock (common), issuer CIK 1720161

25 managers (25 13F filers) reported a position in CTRM shares at 2026-06-30, 430,181 shares in all. 8 filers opened a position and 2 filers sold out during the quarter.

Managers
25
13F filers
25
New
8
Added
4
Reduced
2
Sold out
2
Shares held by filers
430,181

Shares held by filers adds up every 13F filer's report, so a share reported by a parent and by its subsidiary counts twice (H9). Managers counts each filer group once.

13D and 13G filers

No 13D or 13G on this security in the data. Structured 13D/G data starts 2024-12-18.

Insider trades

No Form 4 transaction on this security in the data.

13F holders, Q2 2026

Filers in the available 13F reports with a share position at 2026-06-30, filer groups collapsed to one row (method), largest first. Options and principal amounts are left out. A group row states no % of portfolio, since each member reports its own portfolio: the members' percents are listed under it. A value about 1,000 times or 1/1,000 of the price other filers imply is shown as filed but neither ranks the row nor enters a sum.

HolderSharesValue% of portfolioChangeSource
TOWERVIEW LLC240,000$504K0.33%013F-HRTimeline
RENAISSANCE TECHNOLOGIES LLC64,817$136K<0.01%-9,05213F-HRTimeline
CITADEL ADVISORS LLCin group CITADEL ADVISORS LLC26,060$54.5K<0.01%new13F-HRTimelineGroup
NewEdge Advisors, LLC21,912$46K<0.01%new13F-HRTimeline
GOLDMAN SACHS GROUP INCin group GOLDMAN SACHS GROUP INC21,202$44.5K<0.01%+12113F-HRTimelineGroup
Apriem Advisors19,000$39.9K<0.01%013F-HRTimeline
SUSQUEHANNA INTERNATIONAL GROUP, LLPin group SUSQUEHANNA INTERNATIONAL GRO…12,558$26.2K<0.01%new13F-HRTimelineGroup
Centiva Capital, LP12,248$25.6K<0.01%+1,15913F-HRTimeline
SIMPLEX TRADING, LLC8,510$17.9K<0.01%+2,63213F-HRTimeline
TD Waterhouse Canada Inc.2,800$5.89K<0.01%new13F-HRTimeline
GROUP ONE TRADING LLC571$1.19K<0.01%-10013F-HRTimeline
MORGAN STANLEYin group MORGAN STANLEY254$533<0.01%013F-HRTimelineGroup
SBI Securities Co., Ltd.101$212<0.01%013F-HRTimeline
JONES FINANCIAL COMPANIES LLLPin group JONES FINANCIAL COMPANIES LLLP25$53<0.01%new13F-HRTimelineGroup
Allworth Financial LP20$42<0.01%013F-HRTimeline
OSAIC HOLDINGS, INC.in group OSAIC HOLDINGS, INC.20$42<0.01%new13F-HRTimelineGroup
WOLFF WIESE MAGANA LLC20$42<0.01%013F-HRTimeline
Caitong International Asset Management …16$34<0.01%+1213F-HRTimeline
Farther Finance Advisors, LLC15$32<0.01%013F-HRTimeline
Parallel Advisors, LLC10$21<0.01%013F-HRTimeline
Federation des caisses Desjardins du Qu…10$21<0.01%013F-HRTimeline
GILL CAPITAL PARTNERS, LLC6$13<0.01%013F-HRTimeline
Cape Investment Advisory, Inc.4$8<0.01%new13F-HRTimeline
Russell Investments Group, Ltd.in group Russell Investments Group, Lt…1$2<0.01%013F-HRTimelineGroup
Steward Partners Investment Advisory, L…1$2<0.01%new13F-HRTimeline