Simon manages Japanese equities across Marathon's Global, International and Japanese equity portfolios and is a member of Marathon’s Partners Group. He joined Marathon in 2016 from Jupiter Asset Management where he was Head of Japan equities and manager of the Jupiter Japan Income Fund. He began his investment career at Cazenove Fund Management, where he managed Japanese equities and was also a Director, Partner and Head of Global equities.

Simon holds a B.A. from Durham University.