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SIMPLEX TRADING, LLC

Position in MIAX — Miami International Holdings, Inc.

CIK 1488542 CHICAGO, IL

Position in MIAX

as of Jun 30, 2026 · filed Aug 12, 2026
Position Value
$975,598
+$1,976 QoQ
Shares Held
26,254
+4.9% QoQ
Ownership
0.026%
of shares outstanding
% of Portfolio
0.03%
of 13F equity value
Holder Rank
#123
of 205 holders
Holding Since
Dec 2025
3 quarters on record
Voting authority Sole 100% Shared 0% None 0%

Common Shares in MIAX Over Time

Shares Held

Position Value (USD)

Position in Capital Markets

Financial Services · as of Jun 30, 2026

SIMPLEX TRADING, LLC holds $41,008,190 across 31 Capital Markets names. MIAX ranks #10 (2.4% of the industry book) .

# Ticker Company Shares Value (USD) Open

All Filings in MIAX

Export CSV
3 filing rows on record
Report Date Value (USD) Shares
2026-06-30 $975,598 26,254
2026-03-31 $973,622 25,016
2025-12-31 $355 8