"I'd be very surprised if five years from now we aren't a whole lot bigger," the billionaire investor said.
The economic impact of cost cuts expected from the Kraft-Heinz merger announced Wednesday will likely be limited.
Kraft Foods Group stock surges after the company announced a merger deal with H.J. Heinz.
Warren Buffett says Berkshire Hathaway will have $9.5 billion worth of common stock in the new H.J. Heinz-Kraft Foods company.