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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EP291 - GPTWG Allocation Timestamps 4.89 MB 11 downloads July 17, 2024

This extension pack enhances the existing Allocations message set to support the SEC requirements for capturing timestamps. ...
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EP290 - FX Reject Code Enhancements 4.37 MB 98 downloads June 29, 2024

This extension pack includes the enhancements of reject codes to meet the Investment Association's proposed categories to meet the requirements of the FX Global Code. Revision History 7/2/2024 - SPEC-2760...
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EP289 - EU/UK Post-Trade Transparecy 4.68 MB 137 downloads June 24, 2024

This extension pack includes a number of enhancements for equities post-trade transparency in the EU and UK that may also be useful in other jurisdictions. ...
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EP288 - Security Risk Metrics 4.54 MB 41 downloads June 10, 2024

This extension pack introduces a new FIX message to publish option Greeks. Option Greeks provides a measure of risk of an option, factors which influence the price of an option. ...
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EP287 - Maturity Frequency 4.50 MB 1706 downloads February 8, 2024

This extension pack addresses FIX Protocol requirements related to the maturity information provided for derivative instruments. It adds the capability to convey the frequency with which the contracts...
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EP286 - Addendum to MMT v4.0 and v4.1 4.29 MB 157 downloads January 8, 2024

This extension pack includes support for MMT level 1: More granular Market Mechanisms ('Hybrid System’ and ‘Any Other excluding Hybrid’) for market data messages and MMT level 2: Trading Mode ‘On...
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EP285 - Average Pricing Enhancement 4.67 MB 124 downloads January 8, 2024

This extension pack includes enhanced support for average pricing with the ability to provide quantities (total, changed, remaining) for one or more virtual subgroups in addition to the quantities (total,...
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EP284 - EMIR Report Tracking Number 4.47 MB 1123 downloads September 15, 2023

This extension pack includes the Report Tracking Number (RTN) under the EMIR reporting format is a unique number assigned to the execution and common among a group of reports related to the same execution. Updates 12/11/2023...
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EP283 - UK Post Trade Transparency 3.65 MB 165 downloads September 15, 2023

This Extension Pack includes requirements for equities post-trade transparency as laid out in the UK FCA’s policy statement PS 23/4 of May 2023, section 3 (https://www.fca.org.uk/publication/policy/ps23- 4.pdf). Updates 9/22/2023...
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EP282 - Errors & Omissions 2022 6.04 MB 164 downloads August 31, 2023

This extension pack addresses errors and omissions resolved in 2022. Updates 9/22/2023 SPEC-2691 - Correct category attributes for new category SettlementStatusManagement ...
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EP281 - Settlement Status Management 5.71 MB 778 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 147 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 111 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 128 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 171 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 182 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 116 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 98 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 822 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 245 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. ...