In Thursday trading, the Dow Jones industrial average closed down 231 points, or more than 1 percent, to 16,109.
The Nasdaq fell 63 points, or more than 1 percent, to 4,260.
The S&P 500 fell 22 points, or 1 percent, to 1,846.
The LABJ Stock Index fell 2 points, or 1 percent to 190.