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

A-Team Insight Blogs

Mizuho’s Tweddle Stresses Importance of Data Ownership for Improvement in Quality

Subscribe to our newsletter

Simon Tweddle, director of risk management at Mizuho International, is a firm believer in assigning data ownership in order to effectively monitor data quality across a financial institution. Speaking at last week’s Thomson Reuters event in London, Tweddle explained that Mizuho has recently put the management of its global reference and market data back on the agenda in order to ensure its regional and local operations are all working from the same set of data.

He indicated that the crisis of 18 months ago has raised the profile of the need to revisit legal entity, counterparty and issuer data management. Seconding a notion raised by fellow panellist Deutsche Bank’s head of reference data services, Neil Fletcher, Tweddle indicated that the pressures related to an increase in ad hoc regulatory reporting has added to the business case for a more global approach to data management.

“At Mizuho we are making sure that these data sets are owned and monitored by a group that understands the data and are therefore engaging the end users in our data quality process. Our reference data team sometimes challenges our risk management team to improve data mapping for example,” he elaborated.

The move towards a T+0 environment is a real challenge, however, and the driver for this cannot be assigned to individual business units, he noted. “It is a corporate cost. Let’s stop arguing about which business line pays for it, as the regulatory drivers to invest in data management will only increase over the next three years,” Tweddle contended.

He is an advocate of a publish, validate and subscribe model for data management in order to ensure data quality. The extra validation step by a business user allows for a firm’s data quality overall to improve, he said. The position of a chief data officer (CDO) is therefore not the most appropriate way to tackle the data challenge, according to Tweddle. A community of data focused individuals working together, rather than a single individual responsible for the data, is a more sensible option, he said.

The focus of data management projects should initially be on getting the basics right, rather than tackling complex products, he continued. Determining counterparty exposure is one such initial area of focus, said Tweddle.

The industry should also be more proactive in its approach to tackling data standardisation, concluded Tweddle: “We should not leave it up to the regulators to determine how we standardise our data, we need to pre-empt them by providing our own rules before a consultation paper on the subject is produced.”

Subscribe to our newsletter

Related content

WEBINAR

Upcoming Webinar: Executing the Migration to Cloud to Enable Scalability and Innovation

Date: 22 September 2026 Time: 10:00am ET / 3:00pm London / 4:00pm CET Duration: 50 minutes Cloud-based services and processing have become essential to financial institutions as their data management demands have become more complex and expansive. Thousands of organisations have made the jump from their limited on-premises tech stacks to the near-infinite scalability opportunities...

BLOG

New Breakout Roundtable Session Stimulates Deep Topic Discussion at DMS London

A new feature of this year’s A-Team Group Data Management Summit London was the Champagne Roundtable sessions, in which delegates were able to gather in small, informal groups for guided discussion on a range of data and technology issues facing financial institutions. The fully attended session was well-received by participants, each of whom were invited...

EVENT

Digital Assets & Tokenisation Briefing, New York

A-Team Group’s Digital Assets & Tokenisation Briefing assembles an exclusive group of CxOs and senior technology innovators. These leading market practitioners and infrastructure providers are collectively building the digital rails and decentralised networks that will power Wall Street 2.0.

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...