Traders Marshall Ryan, center, and Thomas Kay, right, wait for the Visa Inc. IPO to beging trading on New York Stock Exchange, Wednesday March 19, 2008. Visa Inc. shares soared more than 30 percent in their stock market debut Wednesday as investors latched on to the largest initial public offering in U.S. history.  (AP Photo/Richard Drew)AP – Few investors expect this week’s readings on the housing market and personal spending to be especially strong. But many are hoping the data shows at least a few clues that an economic rebound is on the horizon.