Dow drops 807 points as stocks post worst day since June

U.S. equity markets tumbled Thursday, posting their worst session since June, as investors wrestled with uncertainty over the timing of a potential COVID-19 vaccine and generally positive economic data.

The Dow Jones Industrial Average fell 807 points, or nearly 3%, but recovered from a drop of s many as 1,000 points in the final hour of trading. Microsoft Inc. and Boeing Co. were among the biggest decliners while Verizon Communications Inc. posted modest gains.

The Nasdaq fell nearly 5 percent as Tesla continued its slide for a third straight day after announcing a $5 billion share sale. The stock began trading at its split-adjusted price on Monday.