The S&P 500 closed at more than a five-month low and in negative territory for the year on Thursday on concerns a deceleration in the Chinese economy would translate into slower global growth.
The Dow Jones industrial average fell 357.37 points, or 2.06 percent, to 16,991.36, the S&P 500 lost 43.74 points, or 2.1 percent, to 2,035.87 and the Nasdaq Composite dropped 141.56 points, or 2.82 percent, to 4,877.49.