Hankering to Invest in Subway? Here's the Thing...

Sandwich chain Subway has more locations than any other quick-service or fast-food restaurant chain in the United States, but an investment in the company is impossible. The parent company, Doctor's Associates, is private.

For those wanting to bet on the continued dominance of fast-food in America, here are the next best options.

Image source: Subway.

Source: Fool.com