Financial Information Exchange

What Does Financial Information Exchange Mean?

Financial Information Exchange (FIX) is a vendor-neutral, standardized and connection-session-based electronic communications protocol for real-time information exchange for financial securities transactions. FIX is an open specification that supports multiple formats and types of communication between financial entities.


FIX is compatible with almost every commonly used network technology.

Techopedia Explains Financial Information Exchange

The Financial Information Exchange Protocol was originally developed in 1992 by Robert Lamoureux for trading equities between Salomon Brothers and Fidelity Investments. FIX is used for trade and pre-trade communication in the global equity markets and has become a de facto messaging standard. Its use is increasing in the fixed-income, foreign exchange and derivatives markets.

The FIX Protocol is owned and maintained by FIX Protocol Ltd., a company established solely for that purpose and responsible for keeping it in the public domain.

FIX communications include:

  • Texting
  • Directed email
  • Stock and other securities trade allocations
  • Indication of interest communications
  • News messaging
  • Order submissions and changes
  • Advertisements
  • Execution reporting

FIX is mostly used for business-to-business transactions and is designed to improve business messages and transactions flow by:

  • Minimizing redundant messaging
  • Increasing the number of clients
  • Reducing time spent on telephone communications, written messages, and transactions and their associated documentation

FIX is similar to the Open Financial Exchange (OFX) Protocol, which is query based and mostly designed for retail transactions. The FIX Protocol is both session and application-based.


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Margaret Rouse is an award-winning technical writer and teacher known for her ability to explain complex technical subjects to a non-technical, business audience. Over the past twenty years her explanations have appeared on TechTarget websites and she's been cited as an authority in articles by the New York Times, Time Magazine, USA Today, ZDNet, PC Magazine and Discovery Magazine.Margaret's idea of a fun day is helping IT and business professionals learn to speak each other’s highly specialized languages. If you have a suggestion for a new definition or how to improve a technical explanation, please email Margaret or contact her…