More than 150 years of back-tested data paints a clear picture of what may come next for Wall Street's major stock indexes.

March’s stock market selloff showed no signs of easing Thursday as major indexes were on track to hit their lowest points of the year amid intensifying backlash to President Donald Trump’s sweeping tariffs,

Stocks opened lower Thursday, with losses accelerating as the session wore on. By the close, all three main indexes were deep in negative territory as tariff headlines once again sent market participants scrambling.