Miami International Holdings

MIAX

Source: the SEC Form 13F filings of the managers we follow, latest for Q3 2026. How we use them

Managers holding

In their latest 13F (Q3 2026)

See who

Value held

$291m

Combined value at quarter end

Last quarter

1 bought

0 sold or trimmed

Fund portfolios

Funds holding it

See which

Price at Q2 ’26 end

$37.16

-4.5% in the quarter

Prices here are quarter-end prices implied by the 13F filings. Today’s price on Yahoo Finance

Share price change by quarter

+10.2%Q4 ’25

-12.3%Q1 ’26

-4.5%Q2 ’26

Change in the quarter-end price implied by managers’ 13F filings, adjusted for stock splits. Excludes dividends.

Managers holding it, by quarter

0Q4 ’23

0Q1 ’24

0Q2 ’24

0Q3 ’24

0Q4 ’24

0Q1 ’25

0Q2 ’25

1Q3 ’25

1Q4 ’25

1Q1 ’26

1Q2 ’26

0Q3 ’26

Counts the managers on this site whose 13F for that quarter includes Miami International Holdings.

Who holds it

Each manager’s latest 13F, sorted by how much of their portfolio it is. Changes are against their previous quarter.

Managers holding Miami International Holdings

Horizon Kinetics	3.3%$291m	$291m	Added +127%	4 qtrs

Download the holders: CSV · JSON · Markdown

About the company

Sector: Financials · Security Brokers, Dealers & Flotation Companies
Incorporated in: Delaware
Shares outstanding: 99m at 31 Jul 2026
SEC filings: Annual reports and other filings on EDGAR

Revenue and profit

$1.0bn2023

$1.1bn2024

$1.4bn2025

Miami International Holdings revenue and net income by year
Year	Revenue	Net income
2025	$1.4bn	−$70.0m
2024	$1.1bn	$102m
2023	$1.0bn	−$20.9m

From the company’s XBRL financial statements filed with the SEC, for each financial year. Gaps mean the company didn’t report that figure in a standard form.

In fund portfolios

US-registered funds run by these managers that hold Miami International Holdings, from their latest N-PORT filings.

Funds holding Miami International Holdings

Horizon Kinetics Inflation Beneficiaries ETFHorizon Kinetics	2.4%	$35.2m	30 Jun 2026