Telecomunicaciones y tecnología
Stocks add to losses as Nasdaq down 2 percent
A downgrade of the semiconductor sector weighed on the tech sector, along with a weaker-than-expected sales forecast by communications equipment maker Ciena Corp .
The Dow Jones industrial average was down 106.00 points, or 0.87 percent, at 12,063.88. The Standard & Poor's 500 Index was down 14.66 points, or 1.11 percent, at 1,306.49. The Nasdaq Composite Index was down 54.09 points, or 1.94 percent, at 2,730.58.
(Reporting by Caroline Valetkevitch; Editing by James Dalgleish)