May 7 (Reuters) - Billionaire investor Carl Icahn has sold his stake in U.S. insurer AIG, Forbes reported https://www.forbes.com/sites/nathanvardi/2018/05/07/carl-icahn-has-sold-his-big-stake-in-aig/#5c544732423d on Monday. : (Reuters) - Billionaire investor Carl Icahn has sold his stake in U.S. insurer AIG (AIG.N), Forbes reported on Monday. With a 4.76 percent stake, Icahn was AIG’s third largest shareholder at the end of 2017, according to Thomson Reuters data. The report said Icahn exited AIG when the company’s stock changed hands at a price between $60 and $65 — levels last seen in February.