Shake Shack Inc. is an American fast-casual restaurant chain founded by restaurateur Danny Meyer. It began in 2001 as a hot dog cart in Madison Square Park, New York City, and opened its first permanent kiosk there in 2004. Shake Shack serves burgers, chicken sandwiches, hot dogs, crinkle-cut fries, frozen custard and shakes, and operates more than 500 company-operated and licensed locations worldwide. It has traded on the NYSE under the ticker SHAK since January 2015.