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FIX 4.0 Specifications

Home / FIX Standards / Unsupported Versions / FIX 4.0 Specifications

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

FIX 4.0 Specification Documents - MS Word
73.38 KB 27 downloads July 30, 2017

Specification Document and Release Notes (ZIP of MS Word) ...

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FIX 4.0 Specification Release Notes
55.98 KB 16 downloads July 30, 2017

FIX 4.0 Overview ...

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FIX 4.0 Specification Documents - PDF
486.71 KB 50 downloads July 30, 2017

Specification Document and Release Notes (ZIP of PDF) ...

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FIX 4.0 - FIXimate for offline use
41.31 KB 24 downloads July 30, 2017

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

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Latest News

Release of Playlist Version 1.2November 16, 2023
EP281-284 added to FIX LatestOctober 28, 2023
EP277-280 added to FIX LatestJuly 26, 2023
FIXML Schema Files now created from OrchestraJuly 26, 2023
Canadian Annual Derivatives Conference Summary Jun 2023June 8, 2023

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