S&P 500 tops $20 trillion as Wall St trades on Trump

U.S. equity indexes hit record highs on Monday, with the benchmark S&P 500's market value topping $20 trillion as investors bet tax cuts promised by President Donald Trump would boost the economy. Trump vowed last Thursday to make a major tax announcement over the next few weeks, adding fuel to a rally that had stalled amid worries about the potential impact of his protectionist trade stance and a lack of clarity about other policy reforms. The S&P 500 has surged about 9 percent since Tr