The co-chief investment officer at Olympia Capital Management has left the French fund of hedge funds manager, following a challenging six months for the group in which both its co-chief executive and its head of international and alternative sales also stepped down.

Kostas Iordanidis will be leaving Olympia effective August 31, to be replaced by deputy chief investment officer Dr Guido Bolliger, who has worked for the group for three years. Bolliger will report to Marc Landeau, founder and chief investment officer.