Traders work on the floor of the New York Stock Exchange in New York City. PHOTO: AFP US stock market loses $5 trillion in value as Trump plows ahead on tariffs NEW YORK – President Donald Trump’s tariffs have spooked investors, with fears of an economic downturn driving a stock market sell-off that has wiped out US$4 trillion (S$5.3 trillion) from the S&P 500’s peak last month, when Wall Street was cheering much of Mr Trump’s agenda. A barrage of new Trump policies has increased uncertainty for businesses, consumers and investors, notably back-and-forth tariff moves against major trading partners like…