CSX Corp. ( CSX) Company Profile: CSX operates the largest rail network in the eastern U.S., with a 21,000-mile rail network linking 23 states and two Canadian provinces, and owns companies providing intermodal and rail-to-truck services. It is one of the nation's primary transporters of economic basics such as coal and steel. Investor Takeaway: With shares already up 9.1% this year, any economic recovery will give it an additional boost. S&P has it rated "buy." It gets 11 "buy" ratings, 10 "buy/holds," and seven "holds," according to S&P's survey of analysts.