Deutsche Bank has hired Matthew Roux from Citadel Investment Group, a $12bn (€10bn) US hedge fund manager and client, to become a director in its prime broking business serving hedge funds.

The bank said Roux would be responsible for securities lending within the bank's global prime services hedge fund demand group. The group lends share certificates to hedge funds, which the hedge funds then sell, hoping the share price will fall and allow them to buy the certificates back at a profit.