Who Owns MIAMI INTL HLDGS INC (MIAX)? -- Institutional Holders (2026-06-30)

248 institutions reported holding $2.75B of MIAMI INTL HLDGS INC (MIAX) in SEC 13F filings for 2026-06-30. Largest institutional holders: HORIZON KINETICS ASSET MANAGEMENT LLC ($291.4M), VANGUARD GROUP INC ($271.2M), BlackRock, Inc. ($188.5M), T. Rowe Price Investment Management, Inc. ($187.0M), SUSQUEHANNA INTERNATIONAL GROUP, LLP ($141.0M). Source: SEC Form 13F.

Rank	Institution	Value	Shares	Change
1	HORIZON KINETICS ASSET MANAGEMENT LLC	$291.4M	7.8M	Added
2	VANGUARD GROUP INC	$271.2M	7.3M	Added
3	BlackRock, Inc.	$188.5M	5.1M	Added
4	T. Rowe Price Investment Management, Inc.	$187.0M	5.0M	Added
5	SUSQUEHANNA INTERNATIONAL GROUP, LLP	$141.0M	3.8M	Added
6	Invesco Ltd.	$75.1M	2.0M	Added
7	J Digital 6 LLC	$67.2M	1.8M	New
8	BLAIR WILLIAM & CO/IL	$65.8M	1.8M	Added
9	Balyasny Asset Management L.P.	$62.5M	1.7M	New
10	AMERICAN CENTURY COMPANIES INC	$59.0M	1.6M	Added
11	STATE STREET CORP	$53.2M	1.4M	Added
12	JPMORGAN CHASE & CO	$52.7M	1.4M	Added
13	GEODE CAPITAL MANAGEMENT, LLC	$51.9M	1.4M	Added
14	ADAGE CAPITAL PARTNERS GP, L.L.C.	$42.5M	1.1M	Trimmed
15	HEALTHCARE OF ONTARIO PENSION PLAN TRUST FUND	$38.6M	1.0M	Added
16	LORD, ABBETT & CO. LLC	$37.2M	1.0M	Added
17	MORGAN STANLEY	$35.3M	950,593	Trimmed
18	Allspring Global Investments Holdings, LLC	$33.5M	857,682	Trimmed
19	TWO SIGMA INVESTMENTS, LP	$33.0M	888,109	Trimmed
20	BANK OF AMERICA CORP /DE/	$31.8M	856,980	Trimmed
21	Alyeska Investment Group, L.P.	$31.5M	848,750	Trimmed
22	PRICE T ROWE ASSOCIATES INC /MD/	$31.4M	844,464	Added
23	FRANKLIN RESOURCES INC	$29.2M	784,799	Added
24	Walleye Capital LLC	$27.1M	728,034	Added
25	WESTFIELD CAPITAL MANAGEMENT CO LP	$26.0M	700,741	New

Source: SEC Form 13F filings · as of 2026-06-30