Bolsa, mercados y cotizaciones
Wall Street opens higher ahead of Bernanke
The Dow Jones industrial average gained 72.31 points, or 0.56 percent, to 13,073.02. The Standard & Poor's 500 Index rose 8.23 points, or 0.59 percent, to 1,407.71. The Nasdaq Composite Index added 24.06 points, or 0.79 percent, to 3,072.77.
(Reporting by Chuck Mikolajczak, editing by Dave Zimmerman)