KEY POINTS
  • Barry Diller strongly denied allegations on Wednesday that he, his stepson and longtime pal and fellow mogul David Geffen engaged in insider trading in their purchases of Activision Blizzard call options.
  • The trades are under investigation by the Justice Department and the Securities and Exchange Commission, according to a report.
  • Diller, Geffen and Diller's stepson, Alex von Furstenberg, together made large bets on Activision stock just days before the video game maker said it had agreed to be bought by Microsoft in a $68.7 billion deal, The Wall Street Journal reported.
Kara Swisher, CNBC's Andrew Ross Sorkin, Martha Stewart, and Barry Diller at CNBC's "The Next 25" Gala in New York.

Entertainment mogul Barry Diller strongly denied the idea that he, his stepson and longtime pal and fellow mogul David Geffen engaged in insider trading in what he claims was "a lucky bet" on Activision Blizzard call options reportedly now under investigation by the Justice Department and the Securities and Exchange Commission.

Diller, Geffen and Diller's stepson, Alex von Furstenberg, together made large bets on Activision stock in January just days before that video game maker said it had agreed to be bought by Microsoft in a $68.7 billion deal, The Wall Street Journal reported.