Forget Nvidia: Billionaire Ken Griffin Raised His Position in This Rival AI Stock by More Than 500%

Griffin increased his position in a company that's reported a triple-digit increase in AI revenue.Nvidia (NVDA -7.04%) shares have soared, resulting in a major boost for investors that got in on the shares early. And many billionaire investors have benefited -- including Ken Griffin, chief executive of Citadel. Griffin initially bought Nvidia back in 2013, and as recently as late last year his fund held more than three million shares of the artificial intelligence (AI) chip giant.But Griffin wasn't a buyer ...