Session level messages to establish and control a FIX session.
Pre trade messages including Indication of Interest (IOI) and advertisement, news and email, quote negotiations, market data requests, static data requests for instrument, market and counter-parties.
Order handling and execution messages.
Post trade messages including trade reporting, allocation, collateral, confirmation, position maintenance, registration instruction, and settlement instructions.
Infrastructure messages for application sequencing, business reject, network and user management.