Simplex Trading, LLC

SEC CIK: 0001488542
Latest filing: Aug 12, 2026

SEC filings (opens in a new tab)

MIAX holding history

Miami International Holdings, Inc. in every 13F filed by Simplex Trading, LLC, including the quarters it was sold out or no filing was made. Changes compare share counts with the previous calendar quarter.

MIAX overview All 13F holders of MIAX Full Q2 2026 holdings

Shares (Q2 2026): 26,254
Value: $975.6K
% of portfolio: <0.1%
Quarters held: 3; Since Q4 2025

Holdings of MIAX by Simplex Trading, LLC, by quarter
Quarter	Shares	Value	% of portfolio	Share change	Action	All holders
Q2 2026	26,254	$975.6K	<0.1%	+1,238+4.9%	Added	Holders
Q1 2026	25,016	$973.6K	<0.1%	+25,008+312,600.0%	Added	Holders
Q4 2025	8	$355	<0.1%	+8	New	Holders