Skip to main content

GROUP ONE TRADING LLC

Position in CTRM — Castor Maritime Inc.

CIK 932540 CHICAGO, IL

Position in CTRM

as of Mar 31, 2026 · filed May 13, 2026
Position Value
$1,241
-$4,329 QoQ
Shares Held
671
-75.1% QoQ
Ownership
0.007%
of shares outstanding
% of Portfolio
0.00%
of 13F equity value
Holder Rank
not a current holder
Holding Since
Jun 2024
7 quarters on record
Voting authority Sole 100% Shared 0% None 0%

Common Shares in CTRM Over Time

Shares Held

Position Value (USD)

Position in Marine Shipping

Industrials · as of Mar 31, 2026

GROUP ONE TRADING LLC holds $16,897,142 across 10 Marine Shipping names. CTRM ranks #10 (0.0% of the industry book) .

# Ticker Company Shares Value (USD) Open

All Filings in CTRM

Export CSV
7 filing rows on record
Report Date Value (USD) Shares
2026-03-31 $1,241 671
2025-12-31 $5,570 2,691
2025-09-30 $5,389 2,591
2025-06-30 $5,077 2,374
2025-03-31 $6,135 2,691
2024-09-30 $30,573 7,245
2024-06-30 $12,976 2,821