 Fast food isnt exactly a growth industry in the U.S. On the contrary, while international expansion continues to move the needle, restaurants have been in a slugfest here in the states as a myriad of new fast-casual upstarts have popped up in the last decade. Against this backdrop, shares of the worlds largest restaurant chain McDonalds NYSE: MCD are up over 90 over the last trailing-five-year stretch, and fellow burger slinger Restaurant Brands International NYSE: QSR parent of Burger King, Tim Hortons, and Popeyes shares are up a more modest 40-plus over the same time period. McDonalds is a massive enterprise with nearly 40,000 stores worldwide. 