On a day-to-day basis, Wall Street seems to have the attention span of a gnat. One day, stocks sell off because of perceived gridlock in Washington or another crisis in North Korea. The next day, equities are just as likely to rebound because iPhone sales are going through the roof or Amazon just found another industry to disrupt. It all sounds random. But over time, there's a method to the market's madness. Events that reflect or affect the direction of the economy will always move stocks.