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.
Messrs. Diller, von Furstenberg and Geffen bought options to purchase Activision shares at $40 each on Jan. 14 in privately arranged transactions through
& Co., the people said. Activision shares were…