Stocks ended down on Monday as initial optimism about China's dedication to yuan flexibility faded.

Based on the latest available data, the Dow Jones industrial average <.DJI> was down 8.23 points, or 0.08 percent, at 10,442.41. The Standard & Poor's 500 Index <.SPX> was down 4.30 points, or 0.38 percent, at 1,113.21. The Nasdaq Composite Index <.IXIC> was down 20.71 points, or 0.90 percent, at 2,289.09.

(Reporting by Caroline Valetkevitch; Editing by Kenneth Barry)