Equities on Wall Street and in Europe fell amid signs from China and Europe that the economic outlook is dimming.
China Premier Wen Jiabao has slashed the 2012 growth target for the world's second-largest economy behind the US to an eight-year low of 7.5 per cent.
"It's wise to take a little money off the table," David Joy, the Boston-based chief market strategist at Ameriprise Financial, told Bloomberg News. "Some of the easy gains have already been made. We're back to focusing on the economic fundamentals. China saying that they are targeting 7.5 per cent growth raises concern of a hard landing."
In early afternoon trading in New York, the Dow Jones Industrial Average fell 0.50 per cent, the Standard & Poor's 500 Index dropped 0.64 per cent and the Nasdaq Composite Index shed 0.82 per cent.
The S&P 500 has gained 102 per cent since March 2009 to an almost four-year high last week, data compiled by Bloomberg show. Still, valuations are lower than at every 52-week peak since 1989.