WEAK EARNINGS: Investors are disappointed by forecasts that earnings at companies in the Standard & Poor's 500 index will decline overall for the first time in nearly three years. Earnings reporting begins Tuesday with Alcoa.
WEAK ASIA: The World Bank warned that a "more pronounced slowdown" is possible in China. The bank also lowered it broader outlook for growth in Asia.
MOVERS: Navistar rose $1.60 to $22.81 after the truck and engine maker said it will add two board members associated with activist investors, heading off a proxy battle. UnitedHealth rose 47 cents to $57.60 after announcing it would pay $4.9 billion to buy most of Amil Participacoes, a Brazilian health benefits and hospital services provider.