Fast-food restaurant operators such as McDonald's (MCD +0.2%), Yum Brands (YUM -2.0%), Jack In...

|About: McDonald's Corporation (MCD)|By:, SA News Editor

Fast-food restaurant operators such as McDonald's (MCD +0.2%), Yum Brands (YUM -2.0%), Jack In the Box (BOX +0.9%), and Wendy's (WEN -0.9%) keep an eye on the aggressive northward expansion of Chick-fil-A, the mega-successful franchise chain that until a recent flareup over gay marriage was running nicely under the radar. A fixture in the South, Chick-fil-A boasts an industry-best average sales per location of $2.9M.