Dow slides 300 points on fears the market is overheating, while Nasdaq closes at record high

· *US stocks finished mixed on Tuesday as investors mulled the S&P 500's rally into positive year-to-date territory and weighed whether prices matched hopes for economic revival.*
· *The Dow Jones industrial average and S&P 500 slid, while the Nasdaq Composite closed higher after briefly topping the 10,000 threshold for the...