Elixium is an electronic trading initiative designed and built by a group of professionals with decades of combined market knowledge in OTC derivatives, collateral and funding markets. Driven by the belief that regulatory change and the resultant disconnect in the marketplace makes an efficient peer to peer market essential, our team members share a common goal in providing real solutions for our clients' needs.


Steve Dalton


Since graduating with an honours degree in mathematics and theoretical physics, Steve has spent the last 30 years in finance, from broking complex interest rate derivatives, to designing and building quantitative analytical software and trading platforms. Steve pioneered the use of real-time analytics in the late 1980s at Tradition, building and running the group’s technology teams throughout the 1990s. In 2000 he became involved in the very early days of electronic broking as European COO of ICor Brokerage, later part of Reuters. Steve has taken a central role in ensuring that Elixium becomes a state-of-the-art liquidity venue for repo.


Gabriele Frediani

Head of Business Development

Gabriele Frediani has over 25 years experience in market infrastructure for Fixed Income and Collateral Management. Fluent in 4 languages he is a frequent participant and moderator on specialist panels and think tanks all over the world. In his previous role as Head of Markets at London Stock Exchange Group’s MTS Markets, he was responsible for the growth of both the inter-dealer and B2C bond markets and the development of the Repo, Swap, Cash and BondVision businesses across Europe and the US. Gabriele has extensive exposure to Repo and Collateral Management products, having worked as Managing Director at inter-dealer broker Dawnay Day and as a Business Development consultant for Eurex Repos and, recently, Euroclear on their respective Centrally Cleared Triparty markets.


Marc M Lapeyre


Marc brings over a decade of experience in Electronic Trading. Before Joining Elixium, he represented Companies such as MTS Market, Marketaxess and more recently Bloomberg where he was in charge of Business development across their EMS (TSOX/EMSX) for the buy side in Europe. Marc joined Elixium as a Director and will be focusing on European Sales.


Iona Levine


Elixium’s dynamic and highly experienced counsel of choice Iona J Levine of Minerva Chambers brings a wealth of financial markets management experience as well as unrivalled legal knowledge and skill to the team.

Iona qualified as a barrister in 1981 and has spent in excess of 30 years specialising in derivatives (otc and exchange traded) related markets, alternative investments, clearing and financial markets infrastructure. She has held senior positions in some of the city’s most prestigious global financial institutions as well as leading law firms, and has been involved in and chaired many key international financial markets initiatives.


Alex Lewis


Alex Lewis contributes to the day-to-day management of, and business critical resources for, the Elixium platform. Based in London, he oversees the development and implementation of short-and long-term plans and delivery of the platform to members.

Alex joined Elixium’s parent company Tradition in April 2008 following an 18-year career as a British Army officer, bringing with him extensive knowledge of effects-based operational and strategic planning.

He has been heavily involved in the planning and delivery of multiple global solutions to other Tradition businesses and electronic trading platforms. He has held a number of roles within the Tradition Group, including project management, business management for TFS Derivatives, as a Manager with the Strategy and Business Development team and Director of Operations for ParFX; which he retains alongside these his Elixium responsibilities.

He joined the Elixium team in the early stages of its development, overseeing the programme management and delivery of the project.


Stephen Malekian

Head of Business Development - US

Stephen Malekian has over 35 years of experience in the global financing markets.  Having run Global Fixed Income Finance and Prime Services at Citi and European and Asian Fixed Income Finance at Barclays, he brings a unique perspective to our product and client base.  Consistently at the top of the Coalition performance rankings for the Fixed Income Finance business, he has been at the forefront of transitioning these businesses away from balance sheet intensive enterprises, to satisfying the ratios on capital, leverage and liquidity, to meet the return hurdles on a bank’s cost of long term capital.  To that end he has joined us to develop Elixium’s All to All lending market place in Europe and roll out the business to the US.  Steve has been Chairman of SIFMA’s Executive Committee of their Funding Division,  member of the New York Federal Reserve Task Force on Triparty Reform, as well as a member of the European Repo Council and the LCH Risk Committee.


Dan Marcus

Global Head of Strategy and Business Development:

Dan is also Global Head of Strategy and Business Development for Elixium’s parent company Tradition, where he is responsible for the development and implementation of strategic initiatives on a global basis, including regulatory strategy, electronic trading and market data. He is also CEO of Trad-X, Tradition's hybrid trading platform for OTC derivatives and other financial instruments. Trad-X enables clients to trade interest rate swaps and offers a flexible execution methodology utilising hybrid, voice and electronic capabilities and the provision of functionality that meets the demands of today's market.

Dan is a qualified solicitor and was General Counsel at Tradition before moving into his business role. Dan was previously Senior Counsel at The London Stock Exchange, where he was responsible for regulatory, IT, corporate and commercial legal work. Prior to that, he was a mergers and acquisition/private equity lawyer at city law firm Nabarro.


Nick McCall

Chief Executive Officer

Nick McCall (BSc. PgDip. MBA) studied in France, America and the UK prior to entering the Financial Markets in 1995 where he enjoyed a twenty year career predominantly within the Gilt Repo market. More recently, Nick was employed as the Managing Director of Tradition UK Fixed Income, responsible for the teams tasked with clients collateral and liquidity issues.


Nick van Overstraeten


Nick joined Elixium in March 2016 following a successful 25 year career at Citigroup working in Risk Treasury. He was responsible for the running of various currency books, culminating in running the GBP book for the last 13 years. Nick brings a wealth of experience from trading a wide range of fixed income derivative products and has a deep understanding of the cash markets. Director of Product Development, Nick is responsible for evolution of products on the Elixium platform.


Simon Rushworth


Simon Rushworth has over 10 years’ experience delivering trading technology solutions across a variety of asset classes. Having joined the Elixium team in 2015, Simon is responsible for technology delivery and service at Elixium, ensuring strategic product evolutions are delivered to the technical standards of our demanding and diverse customer base.

Simon joined Elixium’s parent company Tradition in August 2013. During his time with the company he has delivered a number of key strategic initiatives for the group's flagship electronic trading platforms, Trad-X and ParFX. Simon’s responsibilities for the delivery of trading technology continue to sit broadly across the Tradition group.


David “Bric” Tyson

Managing Director

Front leading dynamic ex international rugby player, Australian David “Bric” Tyson has played a pivotal role in the global financial markets for over 30 years.

His career began in Australia and after stints in both Asia and New York he decided to make London his home.

A well-known broker and strategic marketeer he brings a wealth of knowledge, leadership and other skills to the Elixium Team, where - as you would expect - he plays a key front and central position.


Steve Umpelby

Chief Financial Officer

Steve Umpelby has been CFO EMEA for Tradition, one of the leading inter-dealer brokers, since 2010. During this time the industry has undergone significant change, from a regulatory, cultural and strategic perspective. Steve has been instrumental in successfully navigating the firm in the new financial climate.

Previous to Tradition Steve spent over 10 years working for Fidelity and Barclays Global Investors in a variety of roles and he started his career at PwC where he spent 10 years working with clients in insurance and asset management.


Roberto Verrillo

Head of Strategy and Markets

Almost 25 years of successful trading experience including Repo, Cash Bonds, inflation and conventional asset swaps, various OTC products, cross-currency product and arbitrage.

5 years – Nomura – Managing Director/Desk Head GBP. Responsible for Sterling products including swaps and Gilt Edged Market Making. Main driver of RONIA project in association with WMBA and LMMA. Helped to implement the many initiatives and changes required to comply with the new regulatory environment.

5 years – RBS – Senior Trader/ Executive Director.

4 years – Lehman Brothers – Senior Trader/ Executive Director.

10 years -Swiss Bank/UBS - Senior Repo trader - set up GBP repo product.