Bolsa, mercados y cotizaciones
Wall Street opens higher ahead of Yellen remarks
The Dow Jones industrial average was up 104.55 points, or 0.64 percent, at 16,427.61. The Standard & Poor's 500 Index was up 12.22 points, or 0.66 percent, at 1,869.84. The Nasdaq Composite Index was up 37.38 points, or 0.90 percent, at 4,193.14.
(Reporting by Angela Moon; Editing by Nick Zieminski)