Equity Market Working Group

The ASX Equity Market Working Group is the primary forum for engagement with stakeholders for the ASX equities market and the ASX Trade platform.

To provide updates to enable stakeholders to efficiently plan and allocate resources.
Feedback from stakeholders plays a pivotal role in defining and shaping industry-wide readiness activities.

We appreciate your queries. Please see below for responses to frequently asked questions.

Updated as at 20 March 2025

ASX has published two videos to explain the following changes:

The fourth Equity Market Working Group provides an update on:

ASX has published target Industry Wide Testing and Go Live dates for SR 15.

For full details, please refer to the ASX Market Notice here.

The third Equity Market Working Group provides an update on:

The second Equity Market Working Group provides updates on SR14 & SR15 scope & timeline.

CDE+ Roadmap updates with specific updates for Drop 2 (SR15).
Functional updates related to Self Matched Prevention, Trading Halts and other proposed changes.
Overview of supported FIX functionality.
Overview of Market Data Feed (MDF) functionality.

Service Release 15 (SR15) - will deliver a number of functional and non-functional enhancements including:

Removing the opening auction stagger with a single random open time for equities and ETFs, aligning ASX with other global exchanges and reduce the window of volatility.
Introduction of a post close trading session that provides participants an opportunity to trade additional liquidity at the closing auction price.
Simplifying reporting of block & late trade reportings, removing complexity.
Introduction of a FIX gateway service for order entry and drop copy.
Protocol replacement for OMNet users ITCH + for ASX market data providing information not included in standard ITCH. This will assist some customers looking to retire OMNet.

Name	Date of publication
SR 15 bug fixes and known issues	3 April 2025
ASX Trade FIX Drop Copy Specification	2 April 2025
Post close trading session guide	24 March 2025
ASX Trade OUCH Message Specification	18 March 2025
ASX Trade – First Industry Wide Test (IWT) for Service Release 15	25 February 2025
ASX Trade ITCH Message Specification	17 December 2024
SR15 FIX Drop Copy CDE+ Connectivity Guide	5 December 2024
SR15 OMNet and OUCH Changes	18 November 2024
SR15 FIX Features and Comparison with OMNet and OUCH	18 November 2024
Block and Late Trade Reporting Guide	1 November 2024
ASX Trade Markets, Instruments Groups and Trade Condition Codes	28 October 2024
Trading halt improvements guide	19 June 2024
Removal of staggered opening rotation	9 April 2024