Question 1

Who owns MIAX?

Accepted Answer

MIAMI INTL HLDGS INC (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 Q1 2026.

Question 2

Are institutions buying or selling MIAX?

Accepted Answer

In Q1 2026, 91 institutions opened or increased positions in MIAMI INTL HLDGS INC while 25 reduced or exited — a net buying quarter.

Question 3

What is the Smart Money Verdict on MIAX?

Accepted Answer

HoldingsIntel scores MIAMI INTL HLDGS INC across four independent sources (institutional 13F activity, insider trades, activist filings, and congressional trades) — with 4 of the 4 carrying data for MIAX. In Q1 2026, the institutional leg showed net inflows: 91 buying versus 25 selling.

Question 4

How many hedge funds hold MIAX?

Accepted Answer

113 institutional investors report holding MIAMI INTL HLDGS INC (MIAX) as of Q1 2026, based on SEC 13F filings.

Question 5

Is institutional money flowing into MIAX?

Accepted Answer

As of Q1 2026, tracked institutions in MIAMI INTL HLDGS INC show 91 buyers versus 25 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 91 institutional investors bought MIAMI INTL HLDGS INC. HoldingsIntel cross-checks STOCK Act disclosures against 13F filings to surface these overlaps.

Fund	Action	Shares	Value	Weight	Est. P&L	Conviction
HORIZON KINETICS ASSET MANAGEMENT LLC	Increased	3.5M(+89.7%)	$134.3M	1.5%	+8.26%	75
SUSQUEHANNA INTERNATIONAL GROUP, LLP	Increased	3.3M(+0.3%)	$128.3M	0.0%	+11.49%	30
BlackRock, Inc.	Increased	2.2M(+27.3%)	$86.9M	0.0%	+4.89%	37
CITADEL ADVISORS LLC	Increased	1.6M(+159.5%)	$62.6M	0.0%	+9.41%	48
Invesco Ltd.	Increased	1.6M(+23.9%)	$61.7M	0.0%	+4.37%	36
AIAlyeska Investment Group, L.P.	Increased	1.4M(+12.6%)	$56.3M	0.2%	+10.93%	40
VAVANGUARD CAPITAL MANAGEMENT LLC	New	1.4M	$55.1M	0.0%	+8.14%	41
VPVANGUARD PORTFOLIO MANAGEMENT LLC	New	1.4M	$53.5M	0.0%	+8.14%	41
AGADAGE CAPITAL PARTNERS GP, L.L.C.	Increased	1.2M(+41.5%)	$48.5M	0.1%	+7.92%	39
AMERICAN CENTURY COMPANIES INC	Decreased	1.2M(-15.7%)	$47.5M	0.0%	+1.44%	0
JPMORGAN CHASE & CO	Increased	1.2M(+52.0%)	$46.4M	0.0%	+10.30%	41
MORGAN STANLEY	Increased	1.1M(+419.3%)	$44.6M	0.0%	+8.77%	47
Allspring Global Investments Holdings, LLC	Increased	1.1M(+19.3%)	$43.8M	0.1%	+5.51%	34
BANK OF AMERICA CORP /DE/	Increased	900,882(+196.5%)	$35.1M	0.0%	+7.68%	47
TWO SIGMA INVESTMENTS, LP	Increased	893,718(+536.9%)	$34.8M	0.0%	+7.38%	47
GEODE CAPITAL MANAGEMENT, LLC	Increased	779,782(+52.1%)	$30.4M	0.0%	+4.67%	40
STATE STREET CORP	Increased	712,329(+23.6%)	$27.7M	0.0%	+1.94%	35
BLAIR WILLIAM & CO/IL	Increased	665,781(+1.7%)	$25.9M	0.1%	+5.87%	29
BNP PARIBAS FINANCIAL MARKETS	Increased	572,456(+199.7%)	$22.3M	0.0%	+5.10%	46
FRANKLIN RESOURCES INC	Increased	568,174(+33.0%)	$22.1M	0.0%	+10.65%	37

MIAMI INTL HLDGS INC

Smart Money Verdict

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MIAMI INTL HLDGS INC

Smart Money Verdict

Who's Trading

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Other Financial Services stocks held by institutions