What is the 13F Pro Quality Score for MIAX?

13F Pro ranks MIAMI INTERNATIONAL HOLDINGS, INC. (MIAX) on the 13F Pro Quality Score, a 0–100 composite of 32 fundamental signals including return on invested capital, free cash flow consistency, balance-sheet strength, earnings quality, growth durability, and valuation discipline. The score refreshes after each 10-K and 10-Q filing on SEC EDGAR. View MIAX's current score at https://13fpro.ai/research/MIAX (free sign-up required for the full ranking).

Where does 13F Pro source MIAX data?

All MIAMI INTERNATIONAL HOLDINGS, INC. fundamentals and ownership data come directly from SEC EDGAR. MIAMI INTERNATIONAL HOLDINGS, INC. files with the SEC under CIK 1438472. 13F Pro ingests XBRL financial facts from 10-K and 10-Q filings, Form 13F-HR institutional holdings, and Form 4 insider transactions, with no third-party rewrites or estimates.

What sector is MIAX in?

MIAMI INTERNATIONAL HOLDINGS, INC. (MIAX) is classified in the Financials sector. 13F Pro publishes sector-level fund flow analysis and quality leaders at https://13fpro.ai/research/sector/financials.

How often is MIAX research updated on 13F Pro?

MIAX's fundamentals refresh within hours of each new 10-K or 10-Q filing on SEC EDGAR. Institutional ownership updates after each quarterly 13F filing window. Insider transactions update after each Form 4 filing. The 13F Pro Quality Score recalculates after every fundamentals refresh.

MIAMI INTERNATIONAL HOLDINGS, INC.(MIAX)Stock Analysis

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13F Pro Quality Score

Not in ranked universe

Pending next ranking run

This company passes all size and coverage filters but hasn't been included in the latest quarterly ranking run. Rankings refresh on Jan 1, Apr 1, Jul 1, Oct 1.

Financial data, filings, and institutional holdings below are still tracked in full — only the proprietary quality composite is unavailable for this name.

MIAX Stock Analysis & AI Quality Score

AI stock analysis and institutional research for MIAMI INTERNATIONAL HOLDINGS, INC. (MIAX), a Financials sector company. MIAX is not currently included in 13F Pro's AI-ranked quality universe — this company passes all size and coverage filters but hasn't been included in the latest quarterly ranking run. rankings refresh on jan 1, apr 1, jul 1, oct 1. Based on the latest XBRL financial filings (Q1 2026), MIAMI INTERNATIONAL HOLDINGS, INC. reports quarterly revenue of $369.7M, net income of $170.2M, free cash flow of $49.2M. Top institutional holders of MIAX by reported 13-F value include HORIZON KINETICS ASSET MANAGEMENT, SUSQUEHANNA INTERNATIONAL GROUP, LLP, BlackRock,, based on the most recent SEC filings. MIAX trades on the NYSE exchange and files with the SEC under CIK 1438472. 13F Pro's AI research platform runs 10 specialized AI analysts — value, growth, momentum, macro, and activist specialists — that debate MIAX daily and publish AI-generated analysis with cited SEC sources. The platform aggregates historical XBRL financial facts, 10-Q and 10-K filings, insider Form 4 transactions, and institutional 13-F holdings for MIAMI INTERNATIONAL HOLDINGS, INC. directly from SEC EDGAR.

Revenue

Q1 2026

$369.7M

Net Income

Q1 2026

$170.2M

Free Cash Flow

Q1 2026

$49.2M

D/E Ratio

Q1 2026

0.00

Revenue & Net Income

Earnings Per Share

Key Financials Over Time

Export Financial Table · Pro+

Revenue

+19.6% YoY

$1.36BFY 2025

FY22 —FY23 $1.04BFY24 $1.14BFY25 $1.36B

Net Income

-168.6% YoY

$-70.0MFY 2025

FY22 —FY23 $-20.9MFY24 $102.1MFY25 $-70.0M

Operating Income

+3355.5% YoY

$92.0MFY 2025

FY22 —FY23 $-2.9MFY24 $-2.8MFY25 $92.0M

EPS (Diluted)

-171.9% YoY

$-1.00FY 2025

FY22 —FY23 $-0.37FY24 $1.39FY25 $-1.00

Total Assets

+29.4% YoY

$1.26BFY 2025

FY22 —FY23 —FY24 $973.7MFY25 $1.26B

Total Debt

-92.8% YoY

$3.0MFY 2025

FY22 —FY23 —FY24 $41.8MFY25 $3.0M

Op. Cash Flow

+50.6% YoY

$167.8MFY 2025

FY22 —FY23 $-49.2MFY24 $111.4MFY25 $167.8M

Metric	FY 2025	FY 2024	FY 2023	FY 2022
Revenue	$1.36B +19.6%	$1.14B +9.5%	$1.04B	—
Net Income	$-70.0M -168.6%	$102.1M +588.9%	$-20.9M	—
Operating Income	$92.0M +3355.5%	$-2.8M +1.4%	$-2.9M	—
EPS (Diluted)	$-1.00 -171.9%	$1.39 +475.7%	$-0.37	—
Total Assets	$1.26B +29.4%	$973.7M	—	—
Total Debt	$3.0M -92.8%	$41.8M	—	—
Operating Cash Flow	$167.8M +50.6%	$111.4M +326.5%	$-49.2M	—

AI Insight: MIAX Financial Trends

Net income surged 467% Q4-to-Q1 2026 while operating cash flow accelerated and debt remained minimal.

• Net income jumped to $170M in Q1 2026 from $30M in Q4 2025, a 467% spike.

• Operating cash flow grew to $61M in Q1 2026 from $47M in Q4 2025.

• Total debt remained steady at $3M through Q4 2025 and Q1 2026, indicating strong balance sheet.

⚠ Extraordinary earnings spike in Q1 2026 requires explanation—verify sustainability of $170M net income.

AI Insight: MIAX Ratio Trends

Q1 2026 shows explosive profitability spike with NPM reaching 46.1% and ROE of 63.9%, though data sparsity limits trend confirmation.

• Net profit margin surged to 46.1% in Q1 2026 from 8.1% in Q4 2025, while operating margin expanded modestly to 12.4%.

• ROA jumped to 47.1% in Q1 2026 versus 9.5% in Q4 2025; ROIC appeared for first time at 17.2%.

• Debt-to-equity ratio at 0.00 in Q1 2026 signals no financial leverage and a strengthened balance sheet.

⚠ Extreme profitability metrics in Q1 2026 (46.1% NPM, 63.9% ROE) likely reflect seasonality or one-time items; sustainability unclear with only two quarters of data.

⚠ Q3 2025 data missing entirely; cannot establish multi-quarter trend or assess seasonal patterns reliably.

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Available Research

13F Pro tracks comprehensive data for MIAMI INTERNATIONAL HOLDINGS, INC. including:

SEC EDGAR filings (10-K, 10-Q, 8-K)

XBRL financial facts (revenue, EPS, margins)

Insider transactions (Form 4)

Institutional 13F holdings

Quality rankings (32 signals)

AI analyst debates & daily meetings

Historical financial trends

Peer comparison & sector analysis

Top Institutional Holders of MIAX

HORIZON KINETICS ASSET MANAGEMENT LLC
$134.3M3,451,549 sh
SUSQUEHANNA INTERNATIONAL GROUP, LLP
$128.3M3,296,346 sh
BlackRock, Inc.
$86.9M2,232,680 sh
CITADEL ADVISORS LLC
$62.6M1,607,780 sh
Invesco Ltd.
$61.7M1,585,003 sh
Alyeska Investment Group, L.P.
$56.3M1,447,454 sh
VANGUARD CAPITAL MANAGEMENT LLC
$55.1M1,414,979 sh
VANGUARD PORTFOLIO MANAGEMENT LLC
$53.5M1,374,946 sh
ADAGE CAPITAL PARTNERS GP, L.L.C.
$48.5M1,246,999 sh
AMERICAN CENTURY COMPANIES INC
$47.5M1,221,485 sh

Fund	Value	Shares
HORIZON KINETICS ASSET MANAGEMENT LLC	$134.3M	3,451,549
SUSQUEHANNA INTERNATIONAL GROUP, LLP	$128.3M	3,296,346
BlackRock, Inc.	$86.9M	2,232,680
CITADEL ADVISORS LLC	$62.6M	1,607,780
Invesco Ltd.	$61.7M	1,585,003
Alyeska Investment Group, L.P.	$56.3M	1,447,454
VANGUARD CAPITAL MANAGEMENT LLC	$55.1M	1,414,979
VANGUARD PORTFOLIO MANAGEMENT LLC	$53.5M	1,374,946
ADAGE CAPITAL PARTNERS GP, L.L.C.	$48.5M	1,246,999
AMERICAN CENTURY COMPANIES INC	$47.5M	1,221,485

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Is MIAX a good stock to buy?

13F Pro's AI-powered analysis of MIAMI INTERNATIONAL HOLDINGS, INC. (MIAX) draws on SEC EDGAR-sourced fundamentals, institutional 13F holdings, and insider Form 4 transactions in the Financials sector (listed on NYSE). The 32-signal AI Quality Score, current rank, and full bull/bear verdict for MIAX are available on the MIAX stock profile dashboard — with the same data, AI insights, ratios, and institutional activity refreshed after every 10-K, 10-Q, 13F, and Form 4 filing.

Which hedge funds own MIAX?

Institutional investors are required to disclose their holdings quarterly via SEC Form 13F. 13F Pro aggregates these filings to show which hedge funds, mutual funds, and asset managers are buying or selling MIAX. Combined with insider transaction data from Form 4 filings and AI-powered analysis from 10 specialized research agents, 13F Pro provides a comprehensive view of MIAMI INTERNATIONAL HOLDINGS, INC.'s investment landscape.