Warren Buffett is known as the "Sage" or "Oracle" of Omaha because investors closely follow his investment picks and comments on the market, and he lives and works in Omaha, Nebraska. Photo: AP
Warren Buffett is known as the "Sage" or "Oracle" of Omaha because investors closely follow his investment picks and comments on the market, and he lives and works in Omaha, Nebraska. Photo: AP

Berkshire awash with cash as Buffett avoids stock purchases