Strong earnings growth has helped the S&P 500 rise 11.6 percent since Oct. 4, and more companies on Tuesday reported gains above analysts' expectations. DuPont, Coach Inc. and U.S. Steel reported stronger results.
Economists expect a report later Tuesday to show that Americans' confidence in the economy is still weak. Consumer confidence is near where it was in the spring of 2009. But retail sales still grew in September at their strongest pace in seven months.
About 90 minutes ahead of the opening of trading, Dow Jones industrial average futures are up 21, or 0.2 percent, to 11,846. S&P 500 futures are up 4.20, or 0.3 percent, to 1,251.30. Nasdaq 100 futures are up 7.25, or 0.3 percent, to 2,382.