FIX Protocol Extension Packs

The FIX Protocol is updated and extended constantly. Rather than releasing new FIX versions from time to time, the Protocol evolves through Extension Packs, each produced by the Global Technical Committee based on requirements from FIX’s working groups and members, and published immediately. The term “FIX Latest” stands for the most recent version of the Protocol up to and including the latest Extension Pack. You can also access the machine-readable specification of the latest EP in Orchestra, Unified Repository and FIXML Schema formats.

Extension Packs

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EP272 - Code Set Extensions 2021 4.37 MB 1526 downloads

This extension pack includes the revision of code sets based on communication from...
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EP271 - Errors and Omissions 2021 6.88 MB 3016 downloads

This extension pack addresses errors and omissions resolved in 2021. ...
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EP270 - BeginString for FIX Latest 4.96 MB 1996 downloads

This extension pack clarifies the use of BeginString(8) and ApplVerID(1128) to identify...
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EP269 - Extension for Trade Compression 4.33 MB 2662 downloads

This extension pack includes support for bilateral and multilateral compression for...
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EP268 - Market Model Typology v3.50 6.62 MB 485 downloads

This extension pack includes additional trade flags needed to improve the overall...
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EP267 - Market Data Extensions 4.61 MB 3641 downloads

This extension pack includes enhancements needed to support market data types for...
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EP266 - Unique Product Identifier 3.97 MB 4744 downloads

This extension pack includes support for internationally recognized Unique Product...
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EP265 - Previous Quote Identifier 4.39 MB 3602 downloads

This extension pack is a follow up to Extension Pack EP253 Extensions for CAT/FIX...
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EP264 - Extensions for CAT – Update 4.58 MB 1949 downloads

This extension pack provides additional support for data reporting required by CAT...
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EP263 - Regulatory Timestamps for Quotes 4.51 MB 639 downloads

This extension pack includes support for repeating group of timestamps in quote messages....
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EP262 - APAC Master SPSA 4.39 MB 604 downloads

This extension pack includes additional sources for parties to support segregated...
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EP261 - RegulatoryReportType Extension 4.56 MB 4893 downloads

This extension pack includes additional support for CAT (Consolidated Audit Trail)...
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EP260 - Application Version for FIX Latest 4.45 MB 2156 downloads

This extension pack adds an application version identifier for FIX Latest. This extension...
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EP259 - Related Orders 4.68 MB 1073 downloads

This extension pack includes support for order aggregation on execution reports....
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EP258 - Bilateral Repo Trade Post-Trade Enhancement 4.84 MB 5365 downloads

This extension pack initiated by the Repo Working Group includes improved support...
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EP257 - Targeted Trade Advertisements 4.06 MB 1090 downloads

This extension pack improves the sourcing of contra flow whilst minimizing the cost...
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EP256 - IIROC Client Identification Proposal 4.09 MB 301 downloads

This extension pack addresses a small number of the new requirements introduced with...
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EP255 - STO Exemption 4.08 MB 1301 downloads

This extension proposal addresses potential gaps in the FIX Protocol Standard due...
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EP254 - EU Securities Financing Transactions Reporting (SFTR) 4.15 MB 683 downloads

The EU Securities Financing Transactions Reporting Regulations (SFTR) requires reporting...
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EP253 - Extensions for CAT/FIX Mapping 907.89 KB 1180 downloads

This extension pack supports requirements identified by Consolidated Audit Trail...