Shake Shack is an American fast casual restaurant chain based in New York City. It started out as a hot dog cart inside Madison Square Park in 2001, and its popularity steadily grew.[3] In 2004, it received a permit to open a permanent kiosk within the park,[4] expanding its menu from New York–style hot dogs to one with hamburgers, hot dogs, fries and its namesake milkshakes.
Since its founding, it has been one of the fastest-growing food chains, eventually becoming a public company filing for an initial public offering of stock in late 2014. The offering priced on January 29, 2015; the initial price of its shares was at $21, immediately rising by 123% to $47 on their first day of trading.[5][6][7][8]
Shake Shack Inc. owns and operates over 400 locations globally.