 "A Wall Street sign is pictured in the rain outside the New York Stock Exchange in New York.")
US stocks opened sharply lower for the second straight day on Thursday after China allowed the yuan to decline further and oil prices slumped to near 12-year lows, raising concerns over the state of the global economy.
The Dow Jones industrial average fell 189.94 points, or 1.12%, to 16,716.57, the S&P 500 lost 21.6 points, or 1.09%, to 1,968.66 and the Nasdaq Composite index dropped 103.30 points, or 2.14%, to 4,732.46.
