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

Marion Leslie Leaves Refinitiv to Head Up SIX Financial Information

Subscribe to our newsletter

Marion Leslie has stepped down from the role of managing director of Refinitiv’s Enterprise business and will join SIX as leader of SIX Financial Information and a member of the SIX executive board on January 1, 2020. She will succeed Robert Jeanbart, who has decided to retire at the end of this year.

Jeanbart joined the executive board of SIX in May 2014, taking responsibility for the financial information business unit and successfully restructuring by streamlining its Swiss and international operations and developing new business areas. Expansion was focused on regulatory data and services, along with strengthening the company’s reference data and corporate actions business.

Leslie began her career at Refinitiv (formerly Thomson Reuters) in 1994. After holding various management roles within the company, she became managing director in 2013 with responsibility for the data business in the areas of regulation, pricing and reference data.

In her last role at Refinitiv, she was managing director, Enterprise, with responsibility for delivering market data, platforms and services to the global financial markets. Leslie will move from the UK to Switzerland to take up her role at SIX.

Jos Dijsselhof, CEO at SIX, comments: “Marion knows the financial information business very well and with her at the helm we will drive our financial data business to the next level.”

Subscribe to our newsletter

Related content

WEBINAR

Recorded Webinar: Unpacking Stablecoin Challenges for Financial Institutions

The stablecoin market is experiencing unprecedented growth, driven by emerging regulatory clarity, technological maturity, and rising global demand for a faster, more secure financial infrastructure. But with opportunity comes complexity, and a host of challenges that financial institutions need to address before they can unlock the promise of a more streamlined financial transaction ecosystem. These...

BLOG

CGS Focuses on Hard-Won Privates Expertise Amid Buzz of Startups

CUSIP Global Services is leveraging its history of servicing syndicated loans, asset-backed securities, options, derivatives and other complex asset classes as it expands into the growing private credit and alternatives space. The Norwalk, Connecticut-headquartered provider of issuer and asset identifiers is working closely with financial digital platform FactSet, the Loan Syndication and Trading Association (LSTA)...

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

AI in Capital Markets Handbook 2026

AI adoption in capital markets has moved into a more disciplined phase. The priority is now controlled deployment: where AI can be used safely, where it can deliver measurable value, and how outputs can be governed, monitored and evidenced. The 2026 edition of the AI in Capital Markets Handbook examines how AI is being applied...