Users
FIX is widely used by both the buy side (institutions) as well as the sell side (brokers/dealers) of the financial markets. Among its users are mutual funds, investment banks, brokers, stock exchanges and ECNs. See FIX Protocol Organization for an extensive list of major FIX users.
FIX has become the standard electronic protocol for pre-trade communications and trade execution. Although it is mainly used for equity transactions in the front office area, bond, derivatives and FX-transactions are also possible. One could say that whereas SWIFT is the standard for back office messaging, FIX is the standard for front office messaging. However, today, the membership of FIX Protocol Ltd. is extending FIX into block trade allocation and other phases of the trading process, in every market, for virtually every asset class.
Read more about this topic: Financial Information EXchange