According to the FIX Protocol Website, 75 percent of buy-side and 80 percent of sell-side financial services firms use FIX for electronic trading, with both types of organizations planning to expand FIX, according to a survey taken by TowerGroup.
The site says more than three fourths of all financial exchanges surveyed support FIX in their applications, and that most major stock exchanges and investment banks use FIX for their electronic trading.