MIAXMiami International Holdings, Inc.

CSNew York Stock Exchange (XNYS)·USD

Identity

Security key: 18555
Ticker: MIAX
Type: CS — Common Stock
Exchange: New York Stock Exchange(XNYS)
Venue group: NYSE
Operating MIC: XNYS
Market: stocks
Locale: us
Currency: USD
Listed: 2025-08-14
Round lot: 100
Active: Yes
Last seen in a load: 2026-08-14 20:49
Vendor updated: 2026-08-13 06:09
Ticker root / suffix: MIAX

Detail

Enriched 2026-08-14 20:47

Market cap: $4,314,559,445.04
Shares outstanding (class): 94,907,086
Shares outstanding (weighted): 99,230,898
SIC: 6211 SECURITY BROKERS, DEALERS & FLOTATION COMPANIES
Employees: 439
Location: PRINCETON, NJ
Homepage: https://www.miaxglobal.com
Description: Miami International Holdings Inc is engaged in operating regulated financial marketplaces across multiple asset classes using proprietary technology platforms. The company operates exchange markets for options, equities, futures, and international listings through its MIAX Exchanges, MIAX Futures Exchange, and the Bermuda Stock Exchange. The company operates through four reportable segments: Options, which provides trading and market data services for listed equity and ETP options; Equities, which provides trading services for U.S. equities and ETPs; Futures, which provides futures trading and clearing services through MIAX Futures; and International, which provides listing services for capital market instruments through the Bermuda Stock Exchange and The International Stock Exchange.

Market cap and share counts drift.

Funds holding this security

118 funds · 120 positions · $479.55M reported value, as of 2026-03-31

All holders →

Fund	Ticker	Position value	% of fund	Balance	Match
T. Rowe Price Small-Cap Stock Fund, Inc. T. ROWE PRICE SMALL-CAP STOCK FUND, INC.	—	$54.82M	0.68%	1,408,404 NS	FIGI
VANGUARD TOTAL STOCK MARKET INDEX FUND VANGUARD INDEX FUNDS	VTI	$40.56M	0.00%	1,042,078 NS	FIGI
Horizon Kinetics Inflation Beneficiaries ETF Listed Funds Trust	INFL	$35.43M	2.40%	910,258 NS	FIGI
T. Rowe Price Institutional Small-Cap Stock Fund T. Rowe Price Equity Funds, Inc.	—	$29.78M	0.69%	765,186 NS	FIGI
VANGUARD SMALL-CAP INDEX FUND VANGUARD INDEX FUNDS	VB	$29.27M	0.02%	751,999 NS	FIGI
JPMorgan Small Cap Equity Fund JPMorgan Trust I	—	$27.80M	0.98%	714,295 NS	FIGI
iShares Russell 2000 ETF iShares Trust	IWM	$23.53M	0.03%	604,588 NS	FIGI
VANGUARD SMALL-CAP VALUE INDEX FUND VANGUARD INDEX FUNDS	VBR	$18.62M	0.03%	478,402 NS	FIGI
Columbia Acorn Fund COLUMBIA ACORN TRUST	—	$16.60M	0.74%	426,477 NS	FIGI
Invesco Main Street Small Cap Fund AIM Growth Series (Invesco Growth Series)	—	$15.93M	0.72%	409,345 NS	FIGI
VANGUARD EXTENDED MARKET INDEX FUND VANGUARD INDEX FUNDS	VXF	$13.20M	0.02%	339,086 NS	FIGI
Allspring SMID Cap Growth Fund ALLSPRING FUNDS TRUST	—	$12.73M	1.58%	326,978 NS	FIGI
Invesco Small Cap Equity Fund AIM Funds Group (Invesco Funds Group)	—	$12.23M	1.20%	314,296 NS	FIGI
T. Rowe Price Small-Cap Value Fund, Inc. T. ROWE PRICE SMALL-CAP VALUE FUND, INC.	—	$11.29M	0.12%	290,090 NS	FIGI
Invesco V.I. Main Street Small Cap Fund AIM Variable Insurance Funds (Invesco Varia…	—	$8.33M	0.71%	213,920 NS	FIGI

How positions resolve to the securities master. FIGI_COMPOSITE is exact identifier equality — both sides got the FIGI from Bloomberg. TICKER is a narrow fallback used only where the master row carries no FIGI at all (2,389 rows do not, disproportionately Irish-domiciled US listings like LIN and ACN). Roughly 22% of all positions resolve to the master.

Funds holding this security

Identifiers

master.security_identifier

TICKERMIAX
FIGI_COMPOSITEBBG004RKDWL9
FIGI_SHARE_CLASSBBG004RKDWM8
CIK0001438472
ISINUS59356Q1085
Resolved through OpenFIGI from a holdings ISIN, not supplied by the securities vendor.

Identifiers

Classification

classification.v_security_classification

Asset class: Equity
Sector: Financials
Industry: Capital Markets
Source: LLMunreviewed
Self-reported confidence: 0.95
Model: deepseek
Rationale: MIAX is a common stock of a securities exchange operator, classified under financial capital markets.

Classifications are unreviewed model output. All 5,771 assignments carry source = LLM and is_reviewed = false. Confidence is the model’s own estimate and is not calibrated — it clustered at 0.90–0.98 across the whole first pass, including rows that later proved wrong. Use it to order a review queue, not as a probability. Two share classes of one issuer can disagree.

Classification

Fund data

Not linked to a fund series.

Either this is not a fund, or it is one the SEC share-class snapshot cannot reach — commodity trusts and notes have no series ID at all.