S&P 500 falls below 50-day moving average

Dow Jones, S&P 500, Nasdaq down 1% each, stocks ticking lower

US stocks extended losses on Tuesday with the S&P 500 falling below its 50-day moving average for the first time since December 21.

The Dow Jones Industrial Average was down 121.89 points, or 0.94%, at 12,807.70. The Standard & Poor's 500 Index was down 15.55 points, or 1.13%, at 1,366.65. The Nasdaq Composite Index was down 36.30 points, or 1.19%, at 3,010.78.