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

The Dow Jones Industrial Average, the S&P 500 and the Nasdaq Composite indices eked out mild gains amid choppy trade on Wednesday, in some respite for Wall Street bulls given heavy losses in the past two sessions.

President Trump is doubling down on his widespread tariffs threats despite a stock market downturn that has helped fuel anxiety the nation could slide into a recession. Trump escalated the tit for tat with Canada on Tuesday when he said his administration would increase planned steel and aluminum tariffs in response to an electricity