Sergio Ravich, managing director and head of fixed income sales to Spain at Credit Suisse, has left the firm. Ravich, who could not be reached for comment, reported to Osama Abbasi, co-head of fixed income coverage. It could not be determined if he has taken a new position. His role has been assumed by Savady Yen, head of fixed income sales to France and Benelux. Rebecca O'Neill, spokeswoman in London, confirmed the move.