KUWAIT/DUBAI, Feb 20 (Reuters) - Kuwait Investment Authority (KIA) has appointed Farouk Bastaki as managing director to replace Bader Mohammed al-Saad, newspaper al-Rai reported on Monday, quoting unnamed sources.

The KIA is one of the world's biggest sovereign funds with assets estimated at $592 billion, according to the Sovereign Wealth Fund Institute.

Its investments include a 6.85 percent stake in Daimler DAIGn.DE , Thomson Reuters data shows.

Bastaki will take up his new post by April as part of a board reshuffle at the KIA, the report said.

Bastaki is currently the KIA's executive director for alternative investments.

The KIA did not respond to requests for immediate comment.

(Reporting by Hadeel Al Sayegh and Ahmed Hagagy; editing by Andrew Torchia and Jason Neely) ((Hadeel.AlSayegh@thomsonreuters.com; +971566883310;))