In Tuesday morning trading, the Dow Jones industrial average dropped 230 points, or nearly 2 percent to 13,115.
The Nasdaq lost 26 points, or 1 percent, to 2.986.
The S&P 500 fell 20 points, or 1.5 percent, to 1,411.
The LABJ Stock Index fell nearly 2 points, or 1 percent, to 136.
