Trump is opaque. When a sympathetic business journalist recently asked him to offer clarity to the market, he scoffed. The stock market's tanking? So what. Another day, another tariff. But the ...

Every so often, Wall Street reminds investors that stocks don't move up in a straight line. In span of roughly three weeks, the ageless Dow Jones Industrial Average, broad-based S&P 500 (SNPINDEX: ...