US stocks closed higher on Friday, but it wasn't enough to erase the week's losses. Averting a government shutdown overshadowed weak sentiment data.

The Dow Jones Industrial Average (DJIA) is recovering today after the index suffered throughout the week alongside a stock market selloff. That

But uncertainty around Trump's tariff policy continues to grip Wall Street, and his trade war has only intensified this week. The president has vowed to respond to tariffs planned by the EU and Canada in response to US duties on steel and aluminum imports — most notably leading off Thursday by threatening a 200% tariff on imports of EU wines and spirits.

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