Jonathan leads the European Business Development at activities with responsibilities including overseeing the firm’s electronic trading relationships with European banks, brokers, asset managers and exchanges and identifying new business opportunities across Europe. Prior to joining Citadel Securities, Jonathan worked at Fidelity International for 11 years, most recently as Head of Systematic Trading.
Archives: Profiles
Christoph Hock
Christoph Hock, Head of Tokenisation & Digital Assets, Union Investment Christoph Hock is the Head of Tokenisation & Digital Assets at Union Investment, where he is part of the team driving the strategic development of blockchain-based investment solutions across the value chain. A well-known advocate for digital transformation, Christoph combines a deep institutional background with...
Oliver Pratley
Oliver Pratley is the Research Relationship Manager for Invesco based out of Henley on Thames which runs over $100 billion in active AUM. The Henley Investment Centre is part of Invesco Ltd, a global organisation solely focused on investment management with over $900 billion active AUM and offices all over the world. Mr Pratley has...
Richard Balarkas
Richard Balarkas, Chairman, Saxo UK, Chairman, SquareBook, Non-exec director, CBOE, Board Advisor, Goldex Richard has been in the vanguard of change in financial market structure, regulation and trading for over 30 years. He has held a number of senior positions within leading brokerages, investment banks and exchanges, including President and CEO of Instinet Europe, Global...
Sarah Hay
Sarah Hay, Equities Execution Client Strategy and Head APAC and EMEA Commission Management, UBS Sarah is responsible for managing of senior execution relationship and helping to develop our client and liquidity strategy. She is focused on broad product marketing and providing market-leading execution solutions to our clients to help them with their increasingly complex execution...
Liz Callaghan
Liz Callaghan, Secondary Markets, ICMA Liz’s background is in fixed income & equities electronic trading (Investment Banks, Brokers and MTFs). In the past few years, Liz has focused on market structure strategy (combination of sales/trading experience and knowledge of trading related regulations). Liz’s (CF30) market practitioner’s approach emphasizes: electronic trading product innovation, business line rationalisation...
Melissa Tuttle
Melissa Tuttle, Senior Portfolio Manager, Vanguard Asset Management Ltd Melissa Tuttle is a senior portfolio manager at Vanguard Asset Management Ltd in London. Ms. Tuttle joined Vanguard in December 2016 and currently holds a leadership position in the European Equity Index Group. Prior to joining Vanguard, she headed PIMCO’s global equity trading, overseeing desks in Singapore, London...
Gareth Coltman
Head of European Product Management, MarketAxess Gareth Coltman joined MarketAxess in 2014 as Head of European Product Management and is responsible for the strategy, development and enhancement of MarketAxess’ European trading platform. Mr. Coltman was most recently Head of Product Management with Algomi, where he helped drive the firm’s product strategy in conjunction with both...
ARQA Technologies
Founded in 2000, ARQA Technologies is a leading Russian vendor of software solutions to sell and buy-side players for automation of their front-middle-and-back-office operations in financial markets. It has about 300 clients that represent financial organizations from different countries. The company’s flagship product is QUIK – a multi-instrument, multi-market front-end trading platform with connectivity to...





