Dubai's Istithmar says two executives to leave

Dubai's Istithmar World said on Wednesday its co-chief investment officers are to leave the firm. "John F.Amato and Felix P.Herlihy, the co-chief investment officers of Istithmar World, have confirmed that they have advised Istithmar of their plans to depart the company to explore other opportunities," Istithmar said in a statement, without giving further details.

Istithmar is one of the flagship companies of state-owned Dubai World, whose real estate unit Nakheel is struggling to refinance $3.52 billion Islamic bonds maturing in December.