Management needs to do something with an incoming gush of funds, after all.Dividend raises are common on the U.S. stock markets, especially in and around earnings seasons. For the most part, these hikes are modest; companies enacting them tend to add a few coins to the payout to keep up the dividend yield and boost shareholder morale, among other motivations.It's exceedingly rare for a company to declare a dividend raise of 100%, however. Spinning out of the latest earnings season, one unique stock did just ...