HORIZON KINETICS ASSET MANAGEMENT LLC

Holdings History for MIAMI INTERNATIONAL HOLDINGS, INC. - Common Stock (MIAX)

Symbol: MIAX on NYSE
Investment type: Equity / Common Stock
Latest Disclosed Shares Owned: 9,499,995 shares
Security Ownership %: 12%

Shares, Excluding Options vs Price

Value, Excluding Options

HORIZON KINETICS ASSET MANAGEMENT LLC ownership in MIAMI INTERNATIONAL HOLDINGS, INC. Common Stock (MIAX)

26 Nov 2025 - HORIZON KINETICS ASSET MANAGEMENT LLC has filed an SCHEDULE 13D/A form with the Securities and Exchange Commission (SEC) disclosing ownership of 9,499,995 shares of MIAMI INTERNATIONAL HOLDINGS, INC. Common Stock (MIAX). This represents 12% ownership of the company. In their previous filing dated 21 Aug 2025, HORIZON KINETICS ASSET MANAGEMENT LLC had reported owning 8,679,747 shares, indicating an increase of +9.5%. .

Reporting Name	Ownership %	Change	Value $	Shares owned	Change	Activity %	Price	Form	Report date	Filing time
HORIZON KINETICS ASSET MANAGEMENT LLC	12%	+9.1%	$396,814,791	9,499,995	+820,248	+9.5%	$41.77	13D/A	24 Nov 2025	26 Nov 2025, 13:35
HORIZON KINETICS ASSET MANAGEMENT LLC	11%			8,679,747			$41.58	13D	14 Aug 2025	21 Aug 2025, 14:46

Holdings date	Option	Weight	Change	Value $	Shares	Change	Activity %	Price	All Holders
31 Dec 2025		1.1%	+0.26%	$80,762,635	1,819,798	+437,395	+32%	$44.38	Q4 2025
30 Sep 2025		0.68%	+0.68%	$55,655,545	1,382,403	+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.