Telecomunicaciones y tecnología
Nasdaq briefly turns lower
Optimism about China's vow to allow a flexible yuan currency provided market support.
The Dow Jones industrial average was up 42.63 points, or 0.41 percent, at 10,493.27. The Standard & Poor's 500 Index was up 3.02 points, or 0.27 percent, at 1,120.53. The Nasdaq Composite Index was down 0.82 points, or 0.04 percent, at 2,308.98.
(Reporting by Caroline Valetkevitch; Editing by Kenneth Barry)