But there is a non-statistical basis for concern: an ominous parallel with the financial environment that prevailed in the weeks leading up to the October 1987 stock-market crash. On that day — Black Monday — the Dow Jones Industrial Average dropped 22.6% in a single session.

Investors are reacting to Trump's latest plans to impose a wide range of tariffs. A weaker-than-expected jobs report magnified concerns about how these import taxes would impact the economy.

U.S. stocks open lower after Trump ordered a new slate of tariffs and jobs growth slowed more than expected. Amazon drops after cloud disappointment.