U.S. stocks jumped on Tuesday, building on a strong rally in the previous session as concerns about a speculative retail trading frenzy continued to ease. The Dow Jones Industrial Average climbed about 475.57 points, or 1.6%, to 30,687.48 for its best daily performance since November. The S&P 500 gained 1.4% to 3,826.31, pushing its two-day […] Read more