U.S. stocks staged the strongest rally this year on Monday as the market was boosted by U.S. government's latest plan on clearing bad bank assets and a larger-than-expected rise in existing home sales. S&P 500 indexes jumped more than 7 percent, while Dow surged nearly 500 points. The Dow Jones Industrial Average is seen on a digital display at the New York Stock Exchange March 23, 2009.[Xinhua]