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SIMPLEX TRADING, LLC

Position in CTRM — Castor Maritime Inc.

CIK 1488542 CHICAGO, IL

Position in CTRM

as of Jun 30, 2026 · filed Aug 12, 2026
Position Value
$17,871
+$6,997 QoQ
Shares Held
8,510
+44.8% QoQ
Ownership
0.088%
of shares outstanding
% of Portfolio
0.00%
of 13F equity value
Holder Rank
#9
of 25 holders
Holding Since
Dec 2021
18 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 Jun 30, 2026

SIMPLEX TRADING, LLC holds $4,098,508 across 17 Marine Shipping names. CTRM ranks #14 (0.4% of the industry book) .

# Ticker Company Shares Value (USD) Open

All Filings in CTRM

Export CSV
18 filing rows on record
Report Date Value (USD) Shares
2026-06-30 $17,871 8,510
2026-03-31 $10,874 5,878
2025-12-31 $5,471 2,643
2025-09-30 $28,019 13,471
2025-06-30 $25,002 11,689
2025-03-31 $30,148 13,223
2024-09-30 $42,782 10,138
2024-06-30 $31,740 6,900
2024-03-31 $34 10
2023-12-31 $14,024 32,998
2023-09-30 $20,232 46,299
2023-06-30 $19,593 43,639
2023-03-31 $25,298 32,024
2022-12-31 $47,724 42,611
2022-09-30 $47,566 42,470
2022-06-30 $70,599 52,686
2022-03-31 $68,166 37,047
2021-12-31 $104,888 73,865