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.


This work is licensed under a Creative Commons Attribution-NoDerivatives 4.0 International License.

Extension Packs

Icon

EP292 - Algo Certification 5.59 MB 485 downloads August 7, 2024

The FIX Algorithmic Trading Working Group (GPTWG) members have developed this extension to support the algorithmic trading regulatory requirements in Europe as defined by MiFIR. The investment firms engaged...
Icon

EP291 - GPTWG Allocation Timestamps 4.89 MB 376 downloads July 17, 2024

This extension pack enhances the existing Allocations message set to support the SEC requirements for capturing timestamps. Revision History 12/9/2024 - SPEC-2807 - Correct field description of QuoteRequestRejectReason(658) ...
Icon

EP290 - FX Reject Code Enhancements 4.37 MB 487 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...
Icon

EP289 - EU/UK Post-Trade Transparency 4.68 MB 487 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. ...
Icon

EP288 - Security Risk Metrics 4.54 MB 490 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. ...
Icon

EP287 - Maturity Frequency 4.50 MB 2113 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...
Icon

EP286 - Addendum to MMT v4.0 and v4.1 4.29 MB 508 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...
Icon

EP285 - Average Pricing Enhancement 4.67 MB 233 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,...
Icon

EP284 - EMIR Report Tracking Number 4.47 MB 1656 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...
Icon

EP283 - UK Post Trade Transparency 3.65 MB 570 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...
Icon

EP282 - Errors & Omissions 2022 6.04 MB 986 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 ...
Icon

EP281 - Settlement Status Management 5.71 MB 1307 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...
Icon

EP280 - HKEX SMP Instruction 3.85 MB 810 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...
Icon

EP279 - Eurex Clearing Enhancements 3.60 MB 187 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...
Icon

EP278 - Liquidity Indicator Extension 3.57 MB 712 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...
Icon

EP277 - MMT v4.0 4.40 MB 308 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...
Icon

EP276 - Security Reference Data Extension 4.40 MB 412 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,...
Icon

EP275 - RegulatoryTradeIDGrp Enhancements 4.68 MB 416 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...
Icon

EP274 - Anonymous Trade Indicator Extension 4.49 MB 198 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). ...
Icon

EP273 - Digital Asset Trading Extensions 5.25 MB 1432 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). ...