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.


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Extension Packs

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EP281 - Settlement Status Management 5.71 MB 6095 downloads August 31, 2023

This extension pack includes a set of new FIX messages to facilitate this communication to bridge the gap between information custodians, broker/dealers or outsourcers are receiving via SWIFT MT messages...
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EP280 - HKEX SMP Instruction 3.85 MB 6526 downloads July 20, 2023

This extension pack addresses the requirements to allow the order submitter to indicate a self match prevention (SMP) instruction, e.g. to specify whether to cancel the aggressive (new incoming) order...
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EP279 - Eurex Clearing Enhancements 3.60 MB 3356 downloads July 20, 2023

This extension pack addresses the requirements to capture the initial broker who owns the trade, which is defined to be the broker who submitted the order to the exchange and identified as executing firm...
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EP278 - Liquidity Indicator Extension 3.57 MB 4123 downloads July 20, 2023

This extension pack provides a clarification of LastLiquidityInd(851)=0 (Neither added nor removed liquidity) as well as two new values 10=Unknown when the liquidity indicator of the execution cannot be...
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EP277 - MMT v4.0 4.40 MB 1117 downloads June 5, 2023

This extension pack addresses requirements for MMT v4.0, especially for post-trade flags as identified by the European Consolidated Tape working groups (Equities and Fixed Income) and MMT Technical and...
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EP276 - Security Reference Data Extension 4.40 MB 1132 downloads December 22, 2022

This extension pack addresses a gap in the FIX Protocol related to the unique identification of derivative instruments where the security identifier and core reference data attributes are not sufficient,...
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EP275 - RegulatoryTradeIDGrp Enhancements 4.68 MB 1694 downloads December 22, 2022

This extension pack addresses a specific update to the CFTC Parts 43 and 45 reporting technical specification requirements, where both the Unique Swap Identifier (USI) and Unique Transaction Identifier...
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EP274 - Anonymous Trade Indicator Extension 4.49 MB 2735 downloads December 22, 2022

This extension pack addresses a need for a CFTC regulatory requirement for trade reporting of swaps into a Swaps Data Repository (SDR). ...
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EP273 - Digital Asset Trading Extensions 5.25 MB 5734 downloads October 19, 2022

This extension pack extends the Currency data type to support both ISO 4217 and ISO 24165 standards for fiat currencies and digital assets (including digital currencies). ...
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EP272 - Code Set Extensions 2021 4.37 MB 1502 downloads August 20, 2022

This extension pack includes the revision of code sets based on communication from member firms and issues raised in the FIX discussion forum. ...
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EP271 - Errors and Omissions 2021 6.88 MB 2993 downloads August 20, 2022

This extension pack addresses errors and omissions resolved in 2021. ...
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EP270 - BeginString for FIX Latest 4.96 MB 1967 downloads August 20, 2022

This extension pack clarifies the use of BeginString(8) and ApplVerID(1128) to identify the FIX session profile and application version of messages in FIX.Latest. ...
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EP269 - Extension for Trade Compression 4.33 MB 2618 downloads August 19, 2021

This extension pack includes support for bilateral and multilateral compression for portfolio and netted trades using the FIX Protocol. Revision History 9/1/2021 SPEC2515 - Fix error in name of value for...
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EP268 - Market Model Typology v3.50 6.62 MB 475 downloads August 16, 2021

This extension pack includes additional trade flags needed to improve the overall post-trade transparency. Revision History 9/1/2021 SPEC2515 - Fix error in name of value for TrdSubType(829)=53(Trade submitted...
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EP267 - Market Data Extensions 4.61 MB 3588 downloads August 16, 2021

This extension pack includes enhancements needed to support market data types for changing market needs and new products’ data attributes. ...
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EP266 - Unique Product Identifier 3.97 MB 4703 downloads April 28, 2021

This extension pack includes support for internationally recognized Unique Product Identifier (UPI) for over-the-counter (OTC) derivatives. The UPI is required to be common across all G20 jurisdictions...
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EP265 - Previous Quote Identifier 4.39 MB 3575 downloads April 28, 2021

This extension pack is a follow up to Extension Pack EP253 Extensions for CAT/FIX Mapping to add the field RefOrderIDSource(1081) to the Quote(35=S) message as required for CAT. Revision History 2021-05-11...
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EP264 - Extensions for CAT – Update 4.58 MB 1923 downloads November 18, 2020

This extension pack provides additional support for data reporting required by CAT (Consolidated Audit Trail). EP253 already provided a significant number of extensions for CAT. A few of the enhancements...
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EP263 - Regulatory Timestamps for Quotes 4.51 MB 620 downloads November 18, 2020

This extension pack includes support for repeating group of timestamps in quote messages. The TrdRegTimestamp component supports one or more timestamps related to trading and/or regulatory reporting....
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EP262 - APAC Master SPSA 4.39 MB 577 downloads November 19, 2020

This extension pack includes additional sources for parties to support segregated accounts in the APAC region. The Master SPSA (Master Special Segregated Account) Service is an optional service introduced...