Warren Buffett
Warren Buffett.
  • Warren Buffett issued a negative outlook for the US economy on Saturday.
  • The Berkshire Hathaway CEO said the boom period for his businesses has ended.
  • Higher interest rates and banking pressures are stoking fears of a US recession and credit crunch.

Warren Buffett expects an economic downturn this year, he said during Berkshire Hathaway's annual shareholder meeting on Saturday.