Howard Marks of Oaktree in front of an Oaktree label on a white filing cabinet.
Oaktree Capital Management cofounder Howard Marks.
  • US businesses will soon feel the full force of rising interest rates, according to Howard Marks.
  • "Many more companies are going to founder," the Oaktree cofounder told Bloomberg.
  • The Federal Reserve has aggressively hiked borrowing costs over the past 18 months in a bid to curb inflation.

US companies are about to feel the brunt of the Federal Reserve's battle against inflation, according to billionaire investor Howard Marks.