Question 1

Who owns MIAX?

Accepted Answer

MIAMI INTERNATIONAL HOLDINGS (MIAX) is held by 113 institutional investors that disclose positions via SEC 13F filings. The largest disclosed holder is HORIZON KINETICS ASSET MANAGEMENT LLC as of Q2 2026.

Question 2

Are institutions buying or selling MIAX?

Accepted Answer

In Q2 2026, 80 institutions opened or increased positions in MIAMI INTERNATIONAL HOLDINGS while 48 reduced or exited — a net buying quarter.

Question 3

What is the Smart Money Verdict on MIAX?

Accepted Answer

HoldingsIntel scores MIAMI INTERNATIONAL HOLDINGS across four independent sources (institutional 13F activity, insider trades, activist filings, and congressional trades) — with 4 of the 4 carrying data for MIAX. In Q2 2026, the institutional leg showed net inflows: 80 buying versus 48 selling.

Question 4

How many hedge funds hold MIAX?

Accepted Answer

113 institutional investors report holding MIAMI INTERNATIONAL HOLDINGS (MIAX) as of Q2 2026, based on SEC 13F filings.

Question 5

Is institutional money flowing into MIAX?

Accepted Answer

As of Q2 2026, tracked institutions in MIAMI INTERNATIONAL HOLDINGS show 80 buyers versus 48 sellers — net inflows.

Question 6

Are Congress members and hedge funds both buying MIAX?

Accepted Answer

Yes — in the latest quarter, 1 members of Congress and 80 institutional investors bought MIAMI INTERNATIONAL HOLDINGS. HoldingsIntel cross-checks STOCK Act disclosures against 13F filings to surface these overlaps.

	Action
HORIZON KINETICS ASSET MANAGEMENT LLC	Increased	7.8M(+127.2%)	$291.4M	3.3%	+0.57%	91
BlackRock, Inc.	Increased	5.1M(+127.2%)	$188.5M	0.0%	-0.93%	49
VPVANGUARD PORTFOLIO MANAGEMENT LLC	Increased	3.8M(+175.4%)	$140.7M	0.0%	+1.48%	49
SUSQUEHANNA INTERNATIONAL GROUP, LLP	Increased	3.4M(+1.8%)	$124.7M	0.0%	-2.95%	31
VAVANGUARD CAPITAL MANAGEMENT LLC	Increased	3.2M(+123.7%)	$117.6M	0.0%	+0.43%	49
Invesco Ltd.	Increased	2M(+27.5%)	$75.1M	0.0%	-6.32%	37
BLAIR WILLIAM & CO/IL	Increased	1.8M(+165.8%)	$65.8M	0.2%	+0.45%	57
BALYASNY ASSET MANAGEMENT L.P.	New	1.7M	$62.5M	0.1%	+6.32%	41
AMERICAN CENTURY COMPANIES INC	Increased	1.6M(+29.9%)	$59M	0.0%	-8.22%	37
STATE STREET CORP	Increased	1.4M(+101.2%)	$53.2M	0.0%	-3.30%	47
JPMORGAN CHASE & CO	Increased	1.4M(+15.3%)	$52.7M	0.0%	-2.84%	34
GEODE CAPITAL MANAGEMENT, LLC	Increased	1.4M(+79.0%)	$51.9M	0.0%	-2.84%	45
AGADAGE CAPITAL PARTNERS GP, L.L.C.	Decreased	1.1M(-8.3%)	$42.5M	0.1%	-6.21%	0
HEALTHCARE OF ONTARIO PENSION PLAN TRUST FUND	Increased	1M(+333.1%)	$38.6M	0.1%	+3.53%	47
MORGAN STANLEY	Decreased	950,593(-17.1%)	$35.3M	0.0%	-5.47%	0
Allspring Global Investments Holdings, LLC	Decreased	857,682(-22.9%)	$33.5M	0.1%	-8.30%	0
TWO SIGMA INVESTMENTS, LP	Decreased	888,109(-0.6%)	$33M	0.0%	-6.68%	0
BANK OF AMERICA CORP /DE/	Decreased	856,980(-4.9%)	$31.8M	0.0%	-6.41%	0
AIAlyeska Investment Group, L.P.	Decreased	848,750(-41.4%)	$31.5M	0.1%	-3.59%	0
FRANKLIN RESOURCES INC	Increased	784,799(+38.1%)	$29.2M	0.0%	-1.23%	38

MIAMI INTERNATIONAL HOLDINGS

Smart Money Verdict

Who's Trading

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MIAMI INTERNATIONAL HOLDINGS

Smart Money Verdict

Who's Trading

Top Holders

Continue exploring

Other Financial Services stocks held by institutions