Stocks go on a wild ride as virus threatens economic damage

Stocks went on a wild ride Thursday as investors struggle to gauge the potential impact of the coronavirus outbreak on the global economy. The Dow Jones Industrial Average dropped 960 points in morning trading, then erased much of the loss by midday before giving way to another round of selling in the afternoon. It was down more than 780 points, or 2.9%, in afternoon trading. The bond market saw similar volatility, with the yield on the 10-year Treasury at one point falling to another all-time l