MIAMI INTL HLDGS INC

Historical 13F Holders

Symbol
MIAX
CUSIP
59356Q108
All holders as of
Q2 2026
Type
Equity
Class
COM
Reported Value, Excluding Options
Total Filings

13D/G Filers

Investors who own more than 5% of a class must file a Schedule 13D or 13G. Each filer's latest filing for 59356Q108 since 12/18/2024, largest first.

Filer % of Class Filed
Horizon Kinetics Asset Management LLC 13D/A
7.8% 5/21/2026
Event 5/19/2026
T. Rowe Price Investment Management, Inc. 13G 5.3% 8/14/2026
Event 6/30/2026
BlackRock, Inc. 13G 5.1% 7/29/2026
Event 6/30/2026
Under 5%, checked the "5 percent or less" box, or amended by a later filing (1)
Thomas P. Gallagher 13D/A
4.9% 8/28/2025
Event 8/26/2025

13F Holders by Quarter

Period Filings Shares, Excl. Options Value, Excl. Options
2026 Q3 6 71.5 k $2.40 M
2026 Q2 223 73.2 M $2.71 B
2026 Q1 211 50.2 M $1.95 B
2025 Q4 170 38.0 M $1.68 B
2025 Q3 126 26.3 M $1.06 B