Horizon Kinetics Asset Management Llc

13F Holdings History for MIAMI INTERNATIONAL HOLDINGS, INC. - Common Stock, $0.001 par value per share (the "Common Stock") (MIAX)

Symbol: MIAX on NYSE
Investment type: Equity / Common Stock, $0.001 par value per share (the "Common Stock")
Latest Disclosed Ownership: 8.68M shares
Security Ownership: 10.7%

Shares, Excluding Options vs Price

Value, Excluding Options

HORIZON KINETICS ASSET MANAGEMENT LLC ownership in MIAMI INTERNATIONAL HOLDINGS, INC. Common Stock, $0.001 par value per share (the "Common Stock") (MIAX)

2025-08-21 - HORIZON KINETICS ASSET MANAGEMENT LLC has filed an SCHEDULE 13D form with the Securities and Exchange Commission (SEC) disclosing ownership of 8.68M shares of MIAMI INTERNATIONAL HOLDINGS, INC. Common Stock, $0.001 par value per share (the "Common Stock") (MIAX). This represents 10.7% percent ownership of the company.

Reporting Name	Ownership %	Change	Value $	Shares owned	Change	Activity %	Price	Form	Report date	Filed at
HORIZON KINETICS ASSET MANAGEMENT LLC	10.7%		$308M	8.68M			$35.49	13D	8/14/2025	21 Aug 2025 14:46:49

Holdings date	Option	Weight	Change	Value $	Shares	Change	Activity %	Price	All Holders
9/30/2025		0.68%	+0.68%	$55.7M	1.38M	+1,382,403	NEW	$40.26	Q3 2025

* Reported Price is the price of the security as of the portfolio date. This value is significant in that it is the last known price at which the security was still held.
An asterisk sign (*) next to the price indicates that the price is likely invalid.