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

Historical Holders for Q3 2025

Symbol
MIAX on NYSE
CUSIP
59356Q108
Type / Class
Equity / Common Stock
Shares outstanding
81.2M
All holders as of September 30, 2025
Q3 2025
Total 13F shares, excl. options
25.5M
Holdings value
$1.03B
% of all portfolios
0.005%
Grand Portfolio weight change
+0.002%
Number of holders
114
Number of buys
114
Average Value change %
+0%
Average buys %
+0.005%
Reported Shares, Excluding Options vs Price
Reported Value, Excluding Options
Total Investors

Significant Owners of MIAMI INTERNATIONAL HOLDINGS, INC. - Common Stock (MIAX)

Filer Ownership Change % Holdings Value Net Change Nb Shares Change % Reporting Name Report Period
HORIZON KINETICS ASSET MANAGEMENT LLC 11.7% +9.09% $397M $34.3M 9.5M +9.45% HORIZON KINETICS ASSET MANAGEMENT LLC Nov 24, 2025
Gallagher Thomas P. 4.9% -4% 4.04M -4.5% Thomas P. Gallagher Aug 26, 2025

Institutional Holders of MIAMI INTERNATIONAL HOLDINGS, INC. - Common Stock (MIAX)

Period Reported Shares, Excl. Options Value, Excl. Options Change Price Investors
2025 Q3 25.5M $1.03B +$1.03B $40.26 114