IT Documentation

Euronext informs customers that a new version of the Saturn Regulatory Reporting Solution is available in P-EUA with the production released in July 2019.
This release of Saturn covers the new “Transaction Recovery” functionality.

Short and long code mapping submission process to Euronext Saturn for purposes of Order Storage
under MiFID II

This document provides the details that will allow customers to perform the mandatory connectivity telnet tests to Optiq Order Entry Gateway (OEG) in the various environments.

This document sets out the client connectivity configuration specifications for Optiq® Order Entry Gateways (OEG). It describes the sources of data for connectivity, manner in which clients should attempt to connect to the OEGs.

This document provides guidelines on how to test customers’ applications against Euronext’s Optiq® Order Entry Gateway (OEG) and Matching Engine (ME) for Derivatives markets.

This document outlines all conformance steps required, how tests are organized, and testing timelines.

This document describes the effective functional and operational elements through which the services described in “How the Market Works” are delivered on Optiq.
This document relies on the same structure as that of “How the Market Works” (HTMW) document.
Any known technical or functional limitations, caveats or outstanding defects of the delivered features are individually indicated in this documen

The purpose of this document is to provide customers with a description of the Optiq order entry conformance script, including scenarios for connectivity, functional data conformance and high availability tests for the Optiq Phase 3 of the migration of Euronext Derivatives markets to Optiq.

The current list of supported products in Next EUA (p-EUA) for front-to-back testing with LCH can be found here . Please note that some contracts will expire between now and Go Live, and others may be created in the meantime. Information on the expiry date is provided in the file in attachment.

This document sets out the client messages specifications for Optiq OEG using the FIX 5.0 format. More specifically, it describes the contents of administrative and application messages and provides detailed field descriptions.

Note: Algomi is not in scope of this document.

This document details the Referential Data HTTPS Server for Euronext, to be used in conjunction with the Optiq MDG Client Specifications.

The Servers provide full referential data for the Euronext markets, as well as feed configurations and intraday trades with their MiFID II flags. Users of the Euronext market data feed should use the Servers to:

- Configure feed connections every day.

- Support the referential data that is disseminated on the feed.

- Complete their list of trades.

This document outlines the migration guidelines for Phase 3 of Euronext’s implementation of Optiq: Order Entry Gateway (OEG) and Matching Engine (ME) for Euronext Derivatives markets, as well as the changes required to the Market Data Gateway (MDG) on Euronext Derivatives markets.

This document describes the features and services, known limitations, as well as changes brought by the Optiq release. The content of the document is closely related to the “Euronext Derivatives – How the Market Works” document, which describes how Euronext Derivatives Markets are operated on Optiq.

EURONEXT DERIVATIVES CCG IP CONFIGURATION FOR UTP-D V-EUA

Euronext will execute an Optiq® overnight instruments migration among partitions on the Cash Market Equities segment. Several Cash Equities instruments will be moved from one partition to another one

optiq_technical_note_cash_market_equities_instrument_migration_among_partitions.V1.2

Euronext will execute an Optiq® overnight instruments migration among partitions on the Cash Market Equities segment. Several Cash Equities instruments will be moved from one partition to another one. This change will be effective in production as of Monday 08 July 2019. Clients are requested to read carefully the present notice to assess their readiness for this change and in case of any doubt they are strongly encouraged to contact OCS before Tuesday 18 June 2019 in order to get assistance.

Euronext informs clients that the SBE templates for OEG and MDG(order entry and market data) will be updated on version 116 in EUA Next Environment (pEUA) on 19 June 2019 for the Fixed Income segments and on 21 June 2019 for the remaining segments.
Additionally, A dress rehearsal is planned to take place on Saturday 20 July 2019

This document sets out the client messages specifications for TCS Optiq OEG using the SBE and FIX formats.

This document provides you the exhaustive list of changes introduced by the implementation of the SBE Template 116 (versus SBE template version 109) on OEG and MDG messages, fields and values as well as the standing data files.

This document sets out the client messages specifications for Optiq® OEG using the SBE format. More specifically, it describes the contents of administrative and application messages and provides detailed field descriptions.

The Euronext Optiq Market Data Gateway (MDG) provides high-speed, real-time market data for Euronext markets.

The data feed has the following high-level features:

■ Multicast technology

■ Ultra-low latency

■ MiFID II compliance

■ Cash & Derivatives message harmonization

■ Optimized feed for each type of connectivity

■ High availability

■ Reliable network solution

■ High level of scalability

■ Access to a wide range of European market data sets

This document provides detailed information about the features of the feed to support the development of client applications.

This document details the Referential Data HTTPS Server for Euronext, to be used in conjunction with the Optiq MDG Client Specifications.

The Servers provide full referential data for the Euronext markets, as well as feed configurations and intraday trades with their MiFID II flags. Users of the Euronext market data feed should use the Servers to:

- Configure feed connections every day.

- Support the referential data that is disseminated on the feed.

- Complete their list of trades.

This document sets out the client messages specifications for Optiq OEG using the FIX 5.0 format. More specifically, it describes the contents of administrative and application messages and provides detailed field descriptions.

Note: Algomi is not in scope of this document.

This document sets out the client messages specifications for Optiq OEG using the SBE format. More specifically, it describes the contents of administrative and application messages and provides detailed field descriptions.

OEG SBE Template version 200 for Optiq Derivatives phase 3.

This document sets out the client messages specifications for Optiq OEG using the FIX 5.0 format. More specifically, it describes the contents of administrative and application messages and provides detailed field descriptions.

This document intends to provide general technical information about Euronext Markets – Optiq® SBE Template Policy for the Migration of Derivatives Markets

This document provides the list of errors that can be issued by the Optiq® Matching Engine upon reception of incoming private messages, occurrence of client or exchange business continuity conditions and also the errors that are issued by the Trade Reporting & Publication services.

Euronext RiskGuard is a pre-trade risk management service providing Risk Managers at Clearing or Trading Member firms of Euronext the ability to monitor their clients' or firm's risk exposure. This document describes how to set and amend the different pre trade risk controls available through the Euronext RiskGuard web-based User Interface (UI).

This version of the User Guide is dedicated to clearing participants acting as ‘RiskGuard Clearers’. It provides a description of all the risk controls and additional features available through the RiskGuard User Interface to monitor their NCMs’ customers.

MDG SBE Template version 200 for Optiq Derivatives phase 3.

The purpose of this document is to describe all the specifications of Optiq® Market Data Gateway.

The purpose of this document is to detail Kinematics for Optiq Order Entry Gateway and Market Data Gateway messages.

The purpose of this document is to describe all the file specifications on Optiq®.

Optiq Phase 3 Derivatives Spread Classes

Optiq Phase 3 Trading Schedule Summary

Optiq Phase 3 Tick Size Summary

This Dress Rehearsal will allow customers to test the target Production implementation of the Derivatives Market Data segmentation ahead of the implementation on Monday 29 April 2019, subject to final approval.

Euronext informs about the go-live dates of the SBE template version 109 implementation in Production: Monday 6 May 2019.

The go live date in Production for the SBE Template version 109 will cover the following segments: Equities, Warrants & Certificates, Fixed Income, Bourse du Luxembourg and Index

Euronext informs that the SBE template version 109 go-live in Production has been rescheduled.

The go live date in Production for the SBE Template version 109 is postponed for the time being for the following segments: Equities, Warrants & Certificates, Fixed Income, Bourse du Luxembourg and Index.

The Optiq Programme will replace the current Euronext core trading applications (UTP/CCG/XDP) for the Cash (Regulated Market and Warrants) and Derivative markets. Following customer feedback, the migration to Optiq will start with the Market Data module for Cash and
Derivatives. As such, the new Optiq MDG will be connected to the Euronext Cash and Derivatives UTP matching engines in phase 1, and then to the Optiq matching engines for Cash (phase 2) and then Derivatives (phase 3)

The TRF Conversion Parameters files provide the following data to the members on a daily basis:
■ Contract referential data: Contract code, Maturity, Number of days to expiry, Daily Settlement Price,etc.
■ Pricing of Funding leg and Dividend leg: Daily accrued funding, Daily accrued dividend, Accumulated funding, Accumulated dividend, etc.

Euronext’s UTP has a built-in protection mechanism that restricts the total number of messages (of all types) that a trading session can submit per second. In UTP-Derivatives, each session on the Common Customer Gateway (CCG) has a session limit of 100 msgs/s. Next to that, an inbound order throttle can be set at an individual contract level or for some contracts (product group). If the throttle for a contract is set to n messages per second, then the Trading Host will allow a maximum of n messages per second in a certain second for an ITM for that contract.

The purpose of this document is to provide customers with a description of the Optiq order entry conformance script, with scenarios for connectivity, functional data conformance and high availability tests for the Phase 2 of the migration to Optiq covering the Euronext Cash markets. Please note that the DR(disaster recovery) testing will be detailed in a future version. 

Euronext informs its customers that the SBE templates used for order entry and market data on all Euronext Cash Market Segments will be upgraded to version 109. Only Euronext Block Segment will remain on version 110.

The purpose of this document is to provide description of main functionalities and services offered by Optiq for Euronext Derivatives markets. This document strives to provide for each identified functionality or service the following elements:

1) Why it is present in our Market

2) Description of the service and its principles

3) Examples, where possible, of its use

4) Advantages & benefits of the services as well as recommendation of use

The aim of the document is to provide a practical overview of functionalities and approaches to Derivatives trading in Optiq. At the end of the document technical and architectural topics are also covered to provide a general overview. This document is the view of the expected implementation of Optiq for Derivatives markets. This document will be updated with further information providing additional details1 . In case of any functional changes they will be highlighted and communicated to clients in due course. A number of functionalities described in this document are subject to regulatory approval, and confirmation of implementation will be provided in due time.

This document sets out the client messages specifications for Optiq® OEG using the SBE format. More specifically, it describes the contents of administrative and application messages and provides detailed field descriptions.  Please note that Euronext Block, and Algomi are not in scope of this document.

This document details the Referential Data HTTPS Server for Euronext, to be used in conjunction with the Optiq MDG Client Specifications.

The Servers provide full referential data for the Euronext markets, as well as feed configurations and intraday trades with their MiFID II flags. Users of the Euronext market data feed should use the Servers to:

- Configure feed connections every day.

- Support the referential data that is disseminated on the feed.

- Complete their list of trades.

This document provides the summary of changes for the MDG Derivatives segment change, and the associated technical details. This change is being done as a preparatory step for migration of the Derivatives markets to Optiq.

Following this change Euronext Derivatives markets segments will be split as below:

■ Equity Derivatives (EQD)

■ Index Derivatives (IDD)

■ Commodity Derivatives (COM)

■ Financial Derivatives (FID)

This change in advance of Phase 3 implementation willsimplify migration of the Derivatives markets to Optiq. While no major impact is expected, customers are recommended to ensure that no adjustment is required to the list of Services and Channels they subscribe to via SFTI. For more information, please contact your Relationship Manager. SFTI packages, bandwidth and form are not impacted by this change. This change will be transparent for the CCG, Drop copy & clearing, and will not result in any cancellation of overnight orders. This summary outlines impacts for clients consuming MDG for Derivatives markets. For full details of impacts please review the updated MDG documentation.

This document describes the files generated on a daily basis by the Optiq for the End Of Day (EOD) application and provided to the members of the Euronext Cash regulated markets.

This document sets out the client messages specifications for Optiq OEG using the FIX 5.0 format. More specifically, it describes the contents of administrative and application messages and provides detailed field descriptions.

Note: Algomi is not in scope of this document.

Euronext File Services is a Server providing files necessary for Euronext’s customers that have either an EMDDA (market data), SPA (Service Provider) or TPA (Trading Platform) agreement to get access to the core trading chain of Euronext. This document provides general technical information about Euronext’s File Services.

This document intends to provide general technical information about Euronext File Services.

The purpose of this document is to describe all the specifications of Optiq™ Market Data Gateway.

This document provides all multicast addresses required to access the Euronext Optiq® Market Data Gateway External User Acceptance (EUA).

This document must be read by Euronext’s clients developing tools for retrieving and processing Market Data files.

This document provides all multicast addresses required to access the Euronext Optiq® Market Data Gateway Production and Disaster Recovery (DR).

This document sets out the file format specifications for Total Return Futures Conversion Parameters files and provides detailed field descriptions.

This document describes the Euronext Dublin On Exchange Off Book trade reporting facility. The objective is to give an overview of the functionality as well as the main system rules associated to these facilities. For more detailed information Euronext Members have to refer to the related documentation described below.

This document provides you the exhaustive list of changes introduced by the implementation of the SBE Template 110 (versus SBE template version 107) on OEG and MDG messages, fields and values as well as the standing data files.

Scope and audience: This technical note intends to provide general technical information about SBE and specify the SBE implementation on Optiq®.
This document is meant to familiarize developers who will work with SBE for the first time and remind others the current rules of implementation.

This dpocument provide you exhaustive list of changes introduced by the implementation of the SBE Template 107 (versus SBE template version 105) on OEG and MDG messages, fields and values as well as the standing data files. For an explanation of the changes.

Drop Copy is a service, providing near real-time copies of trade reports & order messages, usually used by for risk management, back-offices and compliance teams

Clients require a dedicated connection to receive Drop Copy messages, which can be setup with configuration that fits their needs.

The scope of data in Drop Copy could provide client messages for various (or all of their) Logical Accesses, for one, or across different Optiq Segments.

This version of the document covers activity on the Cash market only, that are in scope of Phase 2 of the migration to Optiq.

Euronext would like to provide customers with further details on the current rules that apply for the design of SBE templates, and consequently the format of messages. In order to secure a smooth implementation of the coming changes on the SBE template,
Euronext is pleased to provide on the changes the rules of implementation and delivery for the upcoming releases on Optiq CASH®. Clients are strongly invited to test it in Next EUA (p-EUA) prior to the implementation of these changes in production.

This specification document is related to the Euronext Saturn Web Services, part of Euronext’s Reporting Services. Saturn offers a REST API which is used to access the services of the gateway. The purpose of this document is to describe the technology and the supported messages.

Euronext is introducing new Large-in-Scale (LiS) features on the Central Order Book. The service will create more opportunities to execute LIS orders, leveraging existing liquidity in the central order book. As soon as market participants implement the necessary modifications required to use the model, including conformance tests, they will immediately be able to benefit from the existing invisible liquidity. The new service is now available for testing on the External User Acceptance (P-EUA) test platform. The launch in Production is planned for the first quarter of 2019.

This document details the Referential Data HTTPS Server for Euronext, to be used in conjunction with the Optiq MDG Client Specifications.

The Servers provide full referential data for the Euronext markets, as well as feed configurations and intraday trades with their MiFID II flags. Users of the Euronext market data feed should use the Servers to:

- Configure feed connections every day.

- Support the referential data that is disseminated on the feed.

- Complete their list of trades.

This document provides all multicast addresses required to access the Euronext Optiq® Market Data Gateway External User Acceptance (EUA). Only shaped data is provided in the test environment. In order to ensure a Production-like test environment, separate IP addresses and ports are used to replicate the Production ‘shaped’ and ‘unshaped’ configuration.

The Euronext Optiq® Market Data Gateway Physical-EUA (P-EUA) environment is located in Basildon and the Virtual-EUA (V-EUA) environment is located at St. Denis. The P-EUA and V-EUA Source IP Address ranges are provided in this document and for P-EUA the Source IP Address ranges are provided for the live and standby systems as part of the High Availability mechanism. EUA High Availability (HA) and failover testing will only be conducted on the physical test environment (P-EUA).

Customers are requested to allow the V-EUA and P-EUA Source IP Address ranges through their Firewalls.

With the XML Standing Data files for the different Optiq Segments, customers will be able to map which instruments are available in which channel. The Optiq MDG feed configuration can be found at the end of each Standing Data file available and these will be provided on a daily basis in XML format. It is required to use the feed configuration details as part of the standing data files to connect to the feed on a daily basis.

In case a new partition is added to an Optiq Segment, customers are required to adapt to this type of change using the Optiq MDG Standing Data files that include the feed configuration details.

This document sets out the client connectivity configuration specifications for Optiq® Order Entry Gateways (OEG). It describes the sources of data for connectivity, manner in which clients should attempt to connect to the OEGs. This document is a supporting document to the interface technical specifications

The Euronext Optiq Market Data Gateway (MDG) provides high-speed, real-time market data for Euronext markets.

The data feed has the following high-level features:

■ Multicast technology

■ Ultra-low latency

■ MiFID II compliance

■ Cash & Derivatives message harmonization

■ Optimized feed for each type of connectivity

■ High availability

■ Reliable network solution

■ High level of scalability

■ Access to a wide range of European market data sets

This document provides detailed information about the features of the feed to support the development of client applications.

This document provides all multicast addresses required to access the Euronext Optiq® Market Data Gateway Production and Disaster Recovery (DR).

The Euronext Optiq® Market Data Gateway Production environment (PROD) is located in Basildon and the Disaster Recovery (DR) environment is located at St. Denis. The Production Primary (P) and Secondary (S) Source IP Address ranges are provided in this document for the live and standby systems as part of the High Availability mechanism.

Customers are requested to allow the Production Primary, Production Secondary and Disaster Recovery (DR) Source IP Address ranges through their Firewalls.

With the XML Standing Data files for the different Optiq Segments, customers will be able to map which instruments are available in which channel. The Optiq MDG feed configuration can be found at the end of each Standing Data file available and these will be provided on a daily basis in XML format. It is required to use the feed configuration details as part of the standing data files to connect to the feed on a daily basis.

In case a new partition is added to an Optiq Segment, customers are required to adapt to this type of change using the Optiq MDG Standing Data files that include the feed configuration details.

This document provides an overview of the exchange of messages between the Optiq Order Entry Gateway (OEG), the clients’ systems and the Market Data Gateway (MDG). It includes:

■ Typical trading scenarios and the corresponding public and private messages for these scenarios, and the different cases they may cover;

■ The names and IDs of the messages sent;

■ The events that trigger the transmission of messages.

This overview is meant to provide a description of the main structures and concepts used within this document, to facilitate the review of the individual topics and cases covered within.

The messages that are sent between trading members and Optiq are referred to as private messages whereas the messages that are sent by the external broadcasting systems are referred to as public messages.

Private messages are exchanged exclusively between the clients’ system and the Optiq matching engine via order entry gateways, for example to request information from the system or to issue a command (e.g., enter an order). Private messages are also sent back by Optiq via order entry gateways (OEGs) to the client’s system to provide the information requested, or confirm that a command has been successfully executed (or not), as well as to notify of trades, etc.

Public messages are sent by Optiq via MDG to provide to all subscribing clients with anonymized Market data, such as orders entered, best limits, trades executed, market events, updated limits, etc.

The diagrams in this document express representative examples of message sequences and other scenarios can be figured out from the ones described inside that document. The details of the message contents may vary depending on the example.

The diagrams also endeavour to represent as close to reality as possible the sequence in which events and steps occur, and messages are sent. This introduction provides indication when such cases are not feasible to represent faithfully due to complexity of graphical representation.

For a complete description of the messages and their fields, please refer to the associated document:

■ Optiq Order Entry Gateway Messages Specifications SBE;

■ Optiq Order Entry Gateway Messages Specifications FIX;

■ Optiq Market Data Gateway Messages Specifications.

This document sets out the client messages specifications for Optiq® OEG using the SBE format. More specifically, it describes the contents of administrative and application messages and provides detailed field descriptions.

The Euronext Optiq Market Data Gateway (MDG) provides high-speed, real-time market data for Euronext markets.

The data feed has the following high-level features:

■ Multicast technology

■ Ultra-low latency

■ MiFID II compliance

■ Cash & Derivatives message harmonization

■ Optimized feed for each type of connectivity

■ High availability

■ Reliable network solution

■ High level of scalability

■ Access to a wide range of European market data sets

This document provides detailed information about the features of the feed to support the development of client applications.

This document provides details of the throttling mechanism for the Optiq® Order Entry Gateways (OEG). This document is a supporting document for other technical specifications made available for Optiq, some of which are listed in the section Associated documents.

This document provides a functional overview of the Request for Cross (RFC) trading facility which is available for Euronext commodity, equity and index options.

Euronext has developed a suite of reporting services to support the implementation of MiFID II. These services will be operated via a new tool named Saturn, which is composed of a Web API and a Webbased User Interface (UI) offering a number of features to clients. This document describes how to use the Saturn User Interface (UI) as a support of the global reporting services provided by Euronext.

Please note that this version of the User Guide covers the Transaction Reporting, ARM functional services as well as Admin features and Off Book On Exchange (OBOE) services..

Drop Copy is a service, providing near real-time copies of trade reports & order messages, usually used by for risk management, back-offices and compliance teams. Clients require a dedicated connection to receive Drop Copy messages, which can be setup with configuration that fits their needs. The scope of data in Drop Copy could provide client messages for various (or all of their) Logical Accesses, for one, or across different Optiq Segments. This version of the document covers activity on the Cash market only, that are in scope of Phase 2 of the migration to Optiq.

Production & DR OEG Drop copy IP addresses for Cash OEG, OEG DC per Optiq Segment Name and Partition ID and for derivatives per CCG name.

Request For Cross (RFC) Frequently Asked Questions

Sample file for Saturn APA ARM upload file

Sample file for Saturn OBOE upload file

This document provides the list of errors that can be issued by the Optiq® Matching Engine upon reception of incoming private messages, occurrence of client or exchange business continuity conditions and also the errors that are issued by the Trade Reporting & Publication services.

This document provides the list of errors that can be issued by the Optiq® Matching Engine upon reception of incoming private messages, occurrence of client or exchange business continuity conditions and also the errors that are issued by the Trade Reporting & Publication services.

The purpose of this document is to describe all the specifications of Optiq™ Market Data Gateway

Euronext’s electronic trading platform hosts a Hybrid (Request For Execution) market model for Structured Products (incl. Warrants & Certificates and Structured Notes) formerly known as the New Warrants & Certificate market model or Quote Driven market model. This model has been developed jointly with market participants. The model presented below which manages trading of Structured Products using Liquidity Provider quotes has been approved by Euronext market authorities. On Euronext’s electronic trading platform, Optiq®, this market model is hosted on the dedicated Structured Products segment. Note that this segment also supports the trading of instruments using the Order Driven market model.

Euronext’s electronic trading platform hosts a Hybrid (Request For Execution) market model for Structured Products (incl. Warrants & Certificates and Structured Notes) formerly known as the New Warrants & Certificate market model or Quote Driven market model. This model has been developed jointly with market participants. The model presented below which manages trading of Structured Products using Liquidity Provider quotes has been approved by Euronext market authorities. On Euronext’s electronic trading platform, Optiq®, this market model is hosted on the dedicated Structured Products segment. Note that this segment also supports the trading of instruments using the Order Driven market model.

This document sets out the message specifications for the Common Customer Gateway for Derivative markets (CCG-D) using the FIX 5.0 format. More specifically, it describes the structures of the technical, administrative and market data messages and a precise definition for any field part of these message structures. Any message is composed by one header, one body, one trailer. The description of the CCG Derivatives protocol herein addresses all derivative-related trading engines.

This document provides guidelines on how to write effective and efficient applications using the UTP protocols for Order Entry (Binary or FIX 5.0) and Market Data (XDP). It is important to be aware that this document is not a replacement for, but rather a complementary document to the UTP Reference Manuals (see related documentation below). Most of the points raised in this document are concerned with the most efficient, or Exchange friendly way of performing various tasks, and the Exchange requires application developers to adopt the recommendations given where relevant.

The purpose of this document is to set out the message specifications for the Common Customer Gateway for Derivative markets (CCG-D) using the binary format. More specifically, it describes the structures of the technical, administrative and market data messages and a precise definition for any field part of these message structures. Any message is composed by one header, one body, one trailer. The description of the CCG Derivatives protocol herein addresses all Euronext derivative-related trading engines.

This document sets out the client messages specifications for TCS Optiq OEG using the SBE and FIX formats. 

The Optiq Order Entry Gateway (OEG) provides high-speed and real-time connection to the Exchange markets. This document provides information about the High Availability (HA) and Business Continuity mechanisms for the trading chain implemented in Optiq and details of:

■ high availability and business continuity facilities supported by the Optiq trading chain

■ features of the trading chain that support client’s ability to:

– manage their sessions in cases of trading chain recovery,

– resynchronize with the Exchange if required

■ recommended practices in different cases of failure

The scope of this version of the document covers high availability and Exchange business continuity for the Cash markets hosted on Optiq.

The purpose of this document is to provide customers with a description of the Optiq order entry conformance script, with scenarios for connectivity, functional data conformance and high availability tests for the Phase 2 of the migration to Optiq covering the Euronext Cash markets. Please note that the DR(disaster recovery) testing will be detailed in a future version.

This document provides an overview of the exchange of messages between the Optiq Order Entry Gateway (OEG), the clients’ systems and the Market Data Gateway (MDG). It includes:

■ Typical trading scenarios and the corresponding public and private messages for these scenarios, and the different cases they may cover;

■ The names and IDs of the messages sent;

■ The events that trigger the transmission of messages.

This overview is meant to provide a description of the main structures and concepts used within this document, to facilitate the review of the individual topics and cases covered within.

The messages that are sent between trading members and Optiq are referred to as private messages whereas the messages that are sent by the external broadcasting systems are referred to as public messages.

Private messages are exchanged exclusively between the clients’ system and the Optiq matching engine via order entry gateways, for example to request information from the system or to issue a command (e.g., enter an order). Private messages are also sent back by Optiq via order entry gateways (OEGs) to the client’s system to provide the information requested, or confirm that a command has been successfully executed (or not), as well as to notify of trades, etc.

Public messages are sent by Optiq via MDG to provide to all subscribing clients with anonymized Market data, such as orders entered, best limits, trades executed, market events, updated limits, etc.

The diagrams in this document express representative examples of message sequences and other scenarios can be figured out from the ones described inside that document. The details of the message contents may vary depending on the example.

The diagrams also endeavour to represent as close to reality as possible the sequence in which events and steps occur, and messages are sent. This introduction provides indication when such cases are not feasible to represent faithfully due to complexity of graphical representation.

For a complete description of the messages and their fields, please refer to the associated document:

■ Optiq Order Entry Gateway Messages Specifications SBE;

■ Optiq Order Entry Gateway Messages Specifications FIX;

■ Optiq Market Data Gateway Messages Specifications.

This document sets out the client messages specifications for Optiq OEG using the FIX 5.0 format. More specifically, it describes the contents of administrative and application messages and provides detailed field descriptions.    Note: Euronext Block and Algomi are not in scope of this document.

The purpose of this document is to describe all the technical and application messages (APA and Euronext Synapse) of Market Data Gateway (MDG) i.e. Technical messages (Start of day, End of day and Health Status), Referential messages (for quotes and for trades), application messages (APA quotes and APA full trade information) and Snapshot messages and all the related features for those messages i.e. Snapshots (message recovery), Compression (market data packet for low bandwidth connections), Shaping (bandwidth optimization), Gap detection (packet loss recovery), System failures trade, Quote retransmission (outbounded messages rebroadcasting) and Health status Production timetable (list of events during the trading day).

Self-Trade Prevention (STP) has been introduced on Euronext’s Cash Markets to allow Member Firms acting as Liquidity Providers to avoid trading with themselves. The STP mechanism allows customers to avoid unintentional self-trading that results from the matching of two opposite orders on the same instrument, of the same Member Firm (i.e. with the same Member Code). The mechanism applies to orders that are submitted via private messages (SBE or FIX) with the Account Type of Liquidity Provider (LP). In the event that two opposite LP orders belonging to the same Member Firm would match against each other, the mechanism cancels either the resting or the incoming order (depending on the STP Type chosen). If STP Type chosen is “Cancel Resting”, then the system enters the incoming order of the possible match, into the central order book. If STP Type chosen is “Cancel Incoming”, then no changes occur in the central order book and the incoming order is rejected.

This document provides guidelines on how to test customers’ applications against Euronext’s Optiq® Order Entry Gateway (OEG) and Matching Engine (ME) on Cash markets.

This document outlines all conformance steps required, how tests are organised and testing timelines.

This document sets out the client connectivity configuration specifications for Optiq® Order Entry Gateways (OEG). It describes the sources of data for connectivity, manner in which clients should attempt to connect to the OEGs. This document is a supporting document to the interface technical specifications.

This document describes the Euronext Global Reporting Solution concerning the Euronext APA/ARM Services as well as the transaction modalities for Euronext Members not subject to MIFIR and the Cleared OTC Trade Facility. The objective is to give an overview of the services and functionalities. For more detailed information Market participants have to refer to the related documentation described below.

This document provides additional information related to time stamps for Optiq OEG.

This purpose of this document is to provide guidance to Euronext Clients on the application of the requirements for Transaction Reporting (RTS 22) and Order Record Keeping (RTS 6), for the activity conducted on Euronext Regulated Markets.