A Market Identifier Code is a 4-character ISO 10383 code that uniquely identifies a securities trading exchange or venue worldwide. It is maintained by SWIFT as the registration authority and used in trade reporting, market data, and FIX protocol messages.

What is the difference between an operating MIC and a segment MIC?

An operating MIC identifies the entity that runs one or more markets, while a segment MIC identifies a specific market or order book within it. For example XNYS is the New York Stock Exchange operating MIC, and it has segment MICs for its different platforms.

Why do MIC codes often start with X?

By convention many exchange MICs begin with X followed by a city or country abbreviation, such as XLON for London and XTKS for Tokyo. The X is not mandatory, but it is the historical pattern for primary exchanges.

Are dark pools and ATSs assigned MICs?

Yes. ISO 10383 covers all regulated trading venues, including alternative trading systems, dark pools, and multilateral trading facilities, not just lit stock exchanges. Each gets its own MIC for transparent trade reporting.

How current is this MIC list?

MIC codes change as venues open, merge, or close, and the official list is updated monthly by SWIFT. Treat this as a reference for major venues and confirm against the official ISO 10383 registry before regulatory use.

What is the MIC Stock Exchange Code Lookup?

Look up ISO 10383 MIC codes for global stock exchanges and trading venues. Search by exchange name, city, country, or 4-letter code, and see the operating MIC versus segment MIC distinction. It runs free in your browser on Gera Tools, with nothing uploaded.

MIC Stock Exchange Code Lookup

Name: MIC Stock Exchange Code Lookup
Creator: Gera Tools
License: https://creativecommons.org/licenses/by/4.0/

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A MIC code is the universal 4-letter identifier for a stock exchange or trading venue under ISO 10383. This tool lets you search major global venues by name, city, country, or code, and shows whether each is an operating or segment MIC.

How it works

Each MIC is a fixed 4-character code registered with SWIFT, the ISO 10383 registration authority. The standard distinguishes two levels:

Operating MIC — the legal entity running one or more markets (e.g. XNYS for the New York Stock Exchange).
Segment MIC — a specific market or order book operated under that entity.

Many primary exchanges follow the X + city/country pattern: XLON London, XTKS Tokyo, XPAR Paris, XETR Xetra (Frankfurt). Searching this directory matches your term against the code, name, city, and country.

Commonly referenced MIC codes

MIC	Exchange	City	Country
XNYS	New York Stock Exchange	New York	US
XNAS	NASDAQ	New York	US
XLON	London Stock Exchange	London	UK
XPAR	Euronext Paris	Paris	France
XETR	Xetra (Deutsche Börse)	Frankfurt	Germany
XTKS	Tokyo Stock Exchange	Tokyo	Japan
XHKG	Hong Kong Stock Exchange	Hong Kong	HK
XSHG	Shanghai Stock Exchange	Shanghai	China
XSHE	Shenzhen Stock Exchange	Shenzhen	China
XBOM	Bombay Stock Exchange	Mumbai	India
XASX	Australian Securities Exchange	Sydney	Australia
XTSE	Toronto Stock Exchange	Toronto	Canada

Where MIC codes appear in practice

FIX protocol: The MIC is used in FIX tag 207 (SecurityExchange) to identify the primary listing exchange for an instrument, and in tag 30 (LastMkt) to record where a fill actually executed. Without the MIC, two trades in the same ticker on different venues are indistinguishable in a FIX feed.

MiFID II trade reporting: Under the European Union’s Markets in Financial Instruments Directive, executed trades must be reported with the MIC of the trading venue. The segment MIC is used rather than the operating MIC so the specific order book is identified.

Market data feeds: Bloomberg, Refinitiv and most other market data vendors index securities by ticker + MIC pair. The same stock listed on multiple exchanges (for example, a UK company also listed on the NYSE) has a separate record for each exchange, distinguished solely by the MIC.

Regulatory filings: ESMA (European Securities and Markets Authority) uses MIC codes in its Financial Instruments Reference Database (FIRDS) and in EMIR derivatives reporting.

Tips and examples

Use the MIC in FIX tag 207 (SecurityExchange) and in MiFID II / consolidated tape trade reports to say exactly where a trade executed.
A ticker alone is ambiguous — the same symbol can list on several venues, so the MIC disambiguates the actual market.
The official list is updated monthly; always reconcile against the ISO registry for compliance reporting.
Dark pools and ATSs (alternative trading systems) have their own MICs, so the standard covers far more than lit public exchanges.