U.S. Stock Market Turns Negative, Extending Recent Losses

U.S. stocks slipped Friday, extending recent losses that have major indexes on track for their longest streak of weekly declines in more than two decades.

The Dow Jones Industrial Average declined 205 points, or 0.7%. The Nasdaq Composite lost 0.9% and the S&P 500 fell 0.8% after narrowly avoiding entering a bear market, or a 20% decline from its last peak, during a choppy trading session Thursday.

The S&P 500 and Nasdaq are on course for their seventh straight weekly loss, their longest such losing streak since 2001, according to Dow...