U.S. stocks staged a broad-based rally Tuesday with the main indexes closing with their second-largest gains this year. Stocks found relief after last week's rout and as investment funds repositioned their portfolios in the wake of the Labor Day holiday. The S&P 500 closed 48.18 points, or 2.5%, higher at 1,969.40. The Dow Jones Industrial Average jumped 390.30 points, or 2.4%, to 16,492.68. The Nasdaq Composite ended the day up 128 points, or 2.7% at 4,811.93.
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