What is the sentiment of this news? Please choose an answer from {strong negative/moderately negative/mildly negative/neutral/mildly positive/moderately positive/strong positive}.

Federal prosecutors and securities regulators are investigating large bets that Barry Diller, Alexander von Furstenberg and David Geffen made on Activision Blizzard Inc. shares ATVI, +0.60% in January, days before the videogame maker agreed to be acquired by Microsoft Corp. MSFT, -1.10% , according to people familiar with the matter.
mildly negative