Live updates: U.S. markets crater with stocks down more than 5 percent as coronavirus spreads

The threat of a coronavirus-fueled oil war and continued panic around the outbreak brought markets to unprecedented lows Monday, triggering the first-ever forced halt on trading after the Standard & Poor’s 500 index sank 7 percent shortly after the open. The Dow Jones industrial average cratered as much as 2,000 points before clawing back.