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

A-Team Insight Blogs

Release of ISIN-to-LEI Relationship Files on GLEIF Website Meets Mixed Response

Subscribe to our newsletter

The release of mapping between International Securities Identification Numbers (ISINs) and Legal Entity Identifiers (LEIs) by the Association of National Numbering Agencies’ (ANNA) and the Global LEI Foundation (GLEIF) has received a positive industry response, but also raised questions about why a significant number of National Numbering Agencies within ANNA have not yet opted into the initiative.

The GLEIF initially talked about plans to map ISINs and BIC codes to LEIs to enhance their use back in April 2017. Swift and the GLEIF fulfilled their plans to deliver a BIC-to-LEI relationship file in early 2018. An ISIN-to-LEI relationship file was introduced late last week with the aim of improving transparency of exposure by linking the legal issuing entity to its issuance of securities, and addressing some of the regulatory requirements under the Prospective Directive, Central Securities Depositories Regulation (CSDR) and Securities Financing Transactions Regulation (SFTR).

ANNA and the GLEIF have been working on the technical development of mapping ISINs to corresponding LEIs over the past nine months, an exercise that has brought together two ISO standards – ISIN ISO 6166 and LEI ISO 17442 – and provides a consolidated view of ISIN-to-LEI links provided by National Numbering Agencies (NNAs) to the ANNA Service Bureau and on to the GLEIF. The published ISIN-to-LEI mapping is freely available to all on the GLEIF website.

Audience members of a webinar on data standards and global identifiers hosted by A-Team Group this week noted that ISIN-to-LEI mapping is a real value add for data management practitioners. They also questioned why only a limited number of NNAs are currently taking part in the initiative. According to ANNA and the GLEIF, 11 NNAs opted in from the start, with others expected to follow in coming months.

Subscribe to our newsletter

Related content

WEBINAR

Recorded Webinar: Unlocking Transparency in Private Markets: Data-Driven Strategies in Asset Management

As asset managers continue to increase their allocations in private assets, the demand for greater transparency, risk oversight, and operational efficiency is growing rapidly. Managing private markets data presents its own set of unique challenges due to a lack of transparency, disparate sources and lack of standardization. Without reliable access, your firm may face inefficiencies,...

BLOG

Reconciliation and the Silent Revolution Reshaping Financial Operations

By Sarva Srinivasan, head of global strategy and managing director at NeoXam, Americas. In most financial institutions, reconciliation has traditionally lived quietly in the background. It is often viewed as a necessary control process that ensures transactions, positions and balances match across systems and counterparties. Important, yes, but rarely considered fundamental to the business. But...

EVENT

RepRisk Sustainability Breakfast Roundtable London

The London sustainability breakfast is part of the global roundtable thought leadership event series hosted by RepRisk in key markets, including, New York, Toronto, London, Frankfurt, Oslo, Copenhagen, Stockholm, Hong Kong and Singapore in 2026.

GUIDE

Practicalities of Working with the Global LEI

This special report accompanies a webinar we held on the popular topic of The Practicalities of Working with the Global LEI, discussing the current thinking around best practices for entity identification and data management. You can register here to get immediate access to the Special Report.