US stocks open lower following slump in China

U.S. stocks are lower in early trading after China's main index had its biggest fall since late July.

The Dow Jones industrial average fell 43 points, or 0.2 percent, to 17,501 as of 9:35 a.m. Eastern time Tuesday. The Standard & Poor's 500 index slipped two points, or 0.1 percent, to 2,199. The Nasdaq composite was lower by 10 points, or 0.2 percent, at 5,081.

Shares of Wal-Mart fell 2.4 percent after the world's largest retailer reported a lower second-quarter profit and cut its earnings forecast for the year.

In U.S. government bond markets, prices fell, pushing up the yield on the 10-year Treasury note to 2.19 percent, roughly its level at the end of last week.