HORIZON KINETICS ASSET MANAGEMENT LLC - 24 Nov 2025 SCHEDULE 13D/A Report for MIAMI INTERNATIONAL HOLDINGS, INC. Common Stock (MIAX)

Filing Manager: HORIZON KINETICS ASSET MANAGEMENT LLC
Reporting Manager: HORIZON KINETICS ASSET MANAGEMENT LLC
Security: MIAMI INTERNATIONAL HOLDINGS, INC. Common Stock
Symbol: MIAX
Shares outstanding: 81,196,538 shares
Disclosed Ownership: 9,499,995 shares
Ownership: 11.7%
Form type: SCHEDULE 13D/A
Filing time: 26 Nov 2025, 13:35:29 UTC
Date of event: 24 Nov 2025
Previous filing: 21 Aug 2025
SEC: View on sec.gov

Reporting Managers (1)

Name	Ownership	Shares Owned	sole voting power	shared voting power	Signature	Title	CIK
HORIZON KINETICS ASSET MANAGEMENT LLC	11.7%	9,499,995	9,499,995	0	/s/Jay Kesslen	Jay Kesslen, General Counsel	0001056823