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In forceMarkets and infrastructureLast checked 13 November 2026

MiFIR transaction reporting (MiFIR Art 26)

A regulatory return listed by the European Securities and Markets Authority (ESMA), European Union.

Article 26 of MiFIR requires investment firms to report complete and accurate details of transactions in financial instruments, so competent authorities can detect and investigate potential market abuse, monitor fair and orderly markets, and supervise investment firms' activities. Source

The facts

Who files
Investment firms that execute transactions in financial instruments, reporting to their National Competent Authorities (NCAs), which then exchange reports among themselves using the Transaction Reporting Exchange Mechanism (TREM); reports do not go to ESMA directly. Source
How often
Trade-by-trade (not a periodic return). Source
Deadline
Not restated on the page read. Source
Format
XML. XML Schema, currently version 1.1.0 (in use since 23 September 2019), as specified in ESMA's Guidelines and technical reporting instructions. Source
How it is filed
The format above is what the library records; what could not be verified is on the ESMA's page.
Status
In force
Group
Markets and infrastructure

Templates (0)

The library lists no templates for this return.

ESMA's Guidelines specify transaction reports field by field for various trading scenarios, each with an example of the XML text to use; not a fixed set of named templates. Source

Validation rules

The ESMA publishes the checks it runs on this return. They could not be counted from the published material. They are written for people to read; software cannot run them as published. Source

Published validation rules for transaction reports, last updated as part of a 2022 update; no single count stated on the page read.

The rules, on esma.europa.eu

Counts are in the ESMA's own unit, so they are not comparable with other regulators' counts.

Public data

No published data from this return was found. Transaction reports are exchanged among NCAs for supervisory purposes; the page read does not describe any public, firm-level or aggregate dataset published from them. Source

Official documents (1)

The ESMA's own files, with the size and SHA-256 fingerprint of each as downloaded on 13 November 2026, so anyone can tell whether a copy is the same version.

Sources

Every page and document this return's facts were read from.

Knowing exactly what is collected, in what format and under which rules is the first step to real-time supervision. Line4 builds SupTech software for financial regulators that runs checks like these as each return arrives.

Line4's own text, and the way Line4 has collected and arranged these records, are free to reuse under CC BY 4.0. Please credit: “Source: Line4 regulatory submissions library (CC BY 4.0), https://www.line4.ai”. The facts themselves belong to no one. The regulators' document titles, template names, quoted terms and documents belong to them and are not covered by this licence: see ESMA's reuse terms. This describes what regulators publish. It is not legal or regulatory advice: always rely on the regulator's own text. Not affiliated with or endorsed by any regulator.

Source: European Securities and Markets Authority (ESMA), https://www.esma.europa.eu. The plain-English summaries are Line4's own; ESMA does not endorse this library.

Last checked 13 November 2026.