Stocks set to advance ahead of housing data

Stocks were set for a higher open Tuesday morning, following deep declines Monday on Wall Street after the World Bank warned that the global economic downturn would be deeper than previously predicted. This morning, Moody's said it will maintain the United States' credit rating at triple-A. Meanwhile, investors will look at data from the housing market, hoping it would give the bulls back some strength as they await the Federal Reserve policy statement tomorrow.

More here: Before the bell: Stock futures advance as Moody's reiterates U.S. rating