Olivetree Financial Group, the UK equity broker and technology firm, has hired a new chief executive for its US subsidiary, as it seeks to expand both geographically and by product against a rapidly changing regulatory backdrop.

David Bell has been hired to lead Olivetree USA LLC, a fledgling subsidiary that offers broker-dealer services to US institutional investors, the firm said in a statement today. He will report to Daryn Kutner, Olivetree's chairman, chief executive and majority shareholder.