Stocks extended losses on Tuesday, with the Dow industrials and the S&P 500 down more than 1 percent after data showed consumer confidence fell in June following a sharp increase in May.

Consumer spending amounts to about two-thirds of the U.S. economy.

The Dow Jones industrial average <.DJI> dropped 91.67 points, or 1.07 percent, to 8,437.71. The Standard & Poor's 500 Index <.SPX> fell 10.65 points, or 1.15 percent, to 916.58. The Nasdaq Composite Index <.IXIC> lost 14.11 points, or 0.77 percent, to 1,829.95.

(Reporting by Rodrigo Campos; editing by Jeffrey Benkoe)