Bolsa, mercados y cotizaciones
Wall St opens lower on euro zone worries
The Dow Jones industrial average was down 156.66 points, or 1.25 percent, at 12,355.38. The Standard & Poor's 500 Index was down 18.03 points, or 1.35 percent, at 1,315.24. The Nasdaq Composite Index was down 48.07 points, or 1.71 percent, at 2,755.25.
(Reporting by Angela Moon, Editing by Kenneth Barry)