Federal prosecutors and securities regulators are investigating large bets that Barry Diller, Alexander von Furstenberg and David Geffen made on Activision Blizzard Inc. shares in January, days before the videogame maker agreed to be acquired by Microsoft Corp. , according to people familiar with the matter.
The three men have an unrealized profit of about $60 million on the options trade, based on the recent Activision share price of around $80, according to the people.