Textainer Group Holdings Limited (NYSE: TGH) has had its share of ups and downs over the years. For example, while its stock is up more than 20% this year, shares have plunged 65% over the past three. That volatility is due to the ebbs and flows of global trade and the impact it has on Textainer’s underlying business, which is to lease containers to global shipping companies. While the company does make money in other ways, those contracts provide the bulk of its revenue each year.