Major changes in FIX 4.0 include enhancements in the following areas:

  • Session layer
  • Header information
  • Supported encryption
  • Date fields were modified
  • Allocation support was significantly improved

Documents

Icon

FIX 4.0 - FIXimate for offline use 41.31 KB 9 downloads

Download the FIXimate web browser-based cross-referencing tool for the FIX Protocol specification.

Create date: July 30, 2017
Icon

FIX 4.0 Specification Documents - MS Word 73.38 KB 9 downloads

Specification Document and Release Notes (ZIP of MS Word)

Create date: July 30, 2017
Icon

FIX 4.0 Specification Documents - PDF 486.71 KB 16 downloads

Specification Document and Release Notes (ZIP of PDF)

Create date: July 30, 2017
Icon

FIX 4.0 Specification Release Notes 55.98 KB 7 downloads

FIX 4.0 Overview

Create date: July 30, 2017