(Bloomberg) — U.S. stock futures slid, hitting exchange-enforced bands that prevent further losses, as investors assess the Trump administration’s beefed up policy response to the coronavirus.Contracts on the S&P 500, Nasdaq 100 and Dow Jones Industrial Average all reached the so-called limit down level established each day by the Chicago Mercantile Exchange. Futures on the S&P 500 lost as much as 3.7% to 2,393.5, while dropping 4.4% for the Nasdaq 100 and falling 3.9% for the Dow Jones Industrial Average. Treasury Secretary Steven Mnuchin warned the coronavirus could send U.S. unemployment up to 20% without government intervention. The underlying S&P […]