IT Documentation by scope

The intended audience of this document is any client of trading activities (Trading Member Firm, ASP, ESP, ISV, Data Vendor)¹ on the:

- Legacy Euronext markets: already connected to Optiq® for the other markets operated by Euronext - Italian markets: connected to Borsa Italiana markets and moving to Optiq®, TCS and/or Saturn (reporting) features

¹ Please note that dedicated migration guidelines for issuers will also be issued.

Euronext Data Centre - Migration Guidelines v2.3

Guide to Trading System - Borsa Italiana Migration to Optiq - Functional Changes v.2.0

This document should be read by clients who have subscribed to one of the following EU and UK MiFID II Euronext Reporting Services: ■ Transaction Reporting on Euronext Markets conducted directly by Euronext Members; ■ Transaction Reporting on Euronext Markets conducted by Euronext Members not Subject to EU and UK MiFID II; ■ ARM transaction reporting service; ■ APA Post-Trade publication service; ■ APA Pre-Trade publication for a SI (Systematic Internaliser) ; ■ OBOE (Off Book On Exchange) services (Track Changes included)

This document should be read by clients who have subscribed to one of the following EU and UK MiFID II Euronext Reporting Services: ■ Transaction Reporting on Euronext Markets conducted directly by Euronext Members; ■ Transaction Reporting on Euronext Markets conducted by Euronext Members not Subject to EU and UK MiFID II; ■ ARM transaction reporting service; ■ APA Post-Trade publication service; ■ APA Pre-Trade publication for a SI (Systematic Internaliser) ; ■ OBOE (Off Book On Exchange) services

This document should be read by clients who have subscribed to one of the following EU and UK MiFID II Euronext Reporting Services: ■ Transaction Reporting on Euronext Markets conducted directly by Euronext Members; ■ Transaction Reporting on Euronext Markets conducted by Euronext Members not Subject to EU and UK MiFID II; ■ ARM transaction reporting service; ■ APA Post-Trade publication service; ■ APA Pre-Trade publication for a SI (Systematic Internaliser) ; ■ OBOE (Off Book On Exchange) services

This document is intended for all clients who use Saturn services.

This document describes the Euronext Dublin & Oslo 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.

The Oslo Optiq Technical User Group presentation that was held as a webcast for Conformance testing.

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.

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 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.

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.

This document sets out the Euronext Clearing system technical guidelines. It describes the different access points and their interfaces, as well as the ways in which Clients can connect to the clearing systems and prepare their integration with Euronext Clearing. Importantly, it also provides details of all the Reports that will be distributed by Euronext Clearing following the migration of the Euronext Cash Markets to Euronext Clearing as their primary clearing house. Details relating to APIs and Connectivity will be provided in dedicated separate documents, to be released in due course.

Euronext Saturn MIFID II Commodities Positions Reporting v1.14

The purpose of this document is to provide customers with a description of all the reporting types authorized by Euronext’s reporting tool, Saturn, and an explanation of all the possible error codes received.

The APA/ARM sections of this document complIes with the UK DRSP regulatory framework governance.

Euronext Cash and Derivatives Markets - Common File Transfer System - Members User Guide - External - v5.21.0

Euronext Cash and Derivatives Markets - Common File Transfer System - Members User Guide - External - v5.21.0 +TC

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.

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. (Track Changes included)

Euronext Colocation Services - Service and Technical Description v5

Euronext Secure Communications Standards v1.0

The purpose of this document is to provide a support and examples on Webservices usage for SATURN application, more specifically on the API (Application Programming Interface) setup with XML format.

The purpose of this document is to introduce the Short Long Code (SLC) Manager GUI and API as well as data requirements for the submission of a mapping between short codes and long codes for Euronext Cash and Derivative Markets, Euronext Synapse, Euronext Block MTF, Sigma-X and Bourse de Luxembourg.

This client specification document is related to the Euronext Saturn Web Services, part of the Euronext Global Reporting Solution dedicated to answer the MiFID II reporting and publication requirements. Saturn offers a REST API which can be used to access the reporting services. The purpose of this document is to describe the technology and the supported messages for Commodity Position Reporting requirements under MiFID II

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

Template of the Position Holder Form

Sample file for Saturn OBOE upload file

Sample file for Saturn APA ARM upload file

Member guidelines for Disaster Recovery 15 October 2022

The purpose of this document is to provide clients with a description of the Saturn conformance test.