A member of UBS's fixed-income, currencies and commodities executive committee has quit, marking the latest senior figure to exit the Swiss investment bank in the past week.

Steve Dugdale, who was put in charge of a new quantitative analysis and research group back in January as part of the restructuring of the bank's FICC business, is understood to have resigned on Wednesday, according to a source with knowledge of the situation. UBS declined to comment on the departure. Dugdale was unavailable for comment.