New York Stock Exchange

In celebration of Cinco de Mayo, a mariachi band performs on the floor of the New York Stock Exchange on May 3rd, 2019, in New York City.

A child stands alongside the Fearless Girl after a ceremony unveiling the statue's new permanent location outside the New York Stock Exchange on December 10th, 2018.

Day-to-day swings in the stock market don't indicate anything about an economy's long-term vitality. That's because it only represents a small sliver of U.S. employment.

An economist finds a pattern that will be of interest to investors.