Wall Street declined after reports on house prices, consumer confidence and business activity missed the mark, as did earnings by Exxon Mobil.
In early afternoon trading in New York, the Dow Jones Industrial Average fell 0.52 per cent, the Standard & Poor's 500 Index declined 0.34 per cent and the Nasdaq Composite Index dropped 0.31 per cent.
Shares of UPS and Exxon Mobil dropped after reporting fourth-quarter results.
"Earnings in general are not as robust as what we saw a year ago," Nicholas Colas, chief market strategist at the ConvergEx Group in New York, told Reuters. "Results are a little weak on the revenue line and that's putting a cloud on things."
Of the 192 S&P 500 companies that reported results since January 9, 129 posted per-share earnings that surpassed forecasts, Bloomberg data showed.