About a-team Marketing Services
The knowledge platform for the financial technology industry

A-Team Insight Blogs

ESMA Publishes Missing Pieces of Reference Data Crucial to MiFID II

Subscribe to our newsletter

To the relief of market participants subject to Markets in Financial Instruments Directive II (MiFID II), the European Securities and Markets Authority (ESMA) has published the last missing pieces of reference data crucial to trading under the regulation – MiFID II and Markets in Financial Instruments Regulation (MiFIR) transitional transparency calculations (TTC) for equity and bond instruments. The publication of the reference data completes TTC for all asset classes.

Steven Maijoor, ESMA chair, says: “Publication of the Transitional Transparency Calculations for bonds and equity completes the provision of data needed by financial market participants and their supervisors for the implementation of one of the key elements of the MiFID/MiFIR reforms – more transparent securities markets. All market participants in the European Union, and National Competent Authorities (NCAs), now have the final information needed to ensure a smooth transition to meeting their responsibilities under the new regime.”

Christian Voigt, senior regulatory adviser at Fidessa, comments: “This data is a crucial step on the way to MiFID II compliance. It clarifies Large in Scale (LIS) for every instrument and is essential information for trading.”

In a blog following the ESMA publication of the outstanding reference data, Voigt wrote: “The reference data allows you to work out what MiFID II really means at an instrument-by-instrument level and turn lofty principles written in MiFID II into something tangible.”

While the equity and bond reference data marks a turning point in MiFID II readiness for many firms, Voigt points out that further information is still needed from ESMA on how to deal with the double volume cap on Day 1 of MiFID II, and on which firms hold Organised Trading Facility (OTF) licenses, although this information is due to be published by ESMA on a daily basis from the 3 January 2018 compliance deadline.

Subscribe to our newsletter

Related content

WEBINAR

Upcoming Webinar: Generative and Agentic AI in Financial Markets: What the Data Really Shows

Date: 15 October 2026 Time: 10:00am ET / 3:00pm London / 4:00pm CET Duration: 50 minutes Artificial intelligence is reshaping financial markets – but the reality on the ground is more nuanced, more uneven, and more instructive than the headlines suggest. A new A-Team Insight research programme, drawing on responses from senior AI decision-makers at...

BLOG

FCA Proposes FRAME Reporting Reform Within £128m Asset Management Savings Package

The Financial Conduct Authority (FCA) has proposed three reforms to UK asset management rules that it estimates would save firms £128 million a year. New fund reporting requirements account for most of the projected benefit, although their introduction would require technology and change projects across a sector managing £16.5 trillion. Fund Reporting for Asset Management...

EVENT

AI in Capital Markets Summit London

Now in its 3rd year, the AI in Capital Markets Summit returns with a focus on the practicalities of onboarding AI enterprise wide for business value creation. Whilst AI offers huge potential to revolutionise capital markets operations many are struggling to move beyond pilot phase to generate substantial value from AI.

GUIDE

Regulatory Data Handbook 2026 – Fourteenth Edition

Welcome to the fourteenth edition of A-Team Group’s Regulatory Data Handbook. Supervisors increasingly expect firms to demonstrate which rules apply, which data supports each obligation, who owns the control and how exceptions are identified and resolved. Policies and implementation programmes must now be supported by records that can withstand regulatory scrutiny. This edition examines material...