Supporting Time-sensitive Securities Trading with the FIX Standard FIX protocol trading refers to the use of the Financial Information eXchange (FIX) standard, a vendor-neutral, open messaging protocol, for real-time electronic communication of securities transactions between financial counterparties. FIX governs how orders are submitted, executed, confirmed, and reported, covering the full trade lifecycle from indication of interest through post-trade allocation. The standard is maintained by the FIX Trading Community, a non-profit governing body with more than 280 member buy-side institution