Shares of burger chain Shake Shack (SHAK 21.40%) skyrocketed on Thursday after the company reported financial results for the fourth quarter of 2023. While other restaurant chains struggle with lackluster restaurant traffic, Shake Shack is encouragingly gaining ground. And this is a big reason that Shake Shack stock was up a whopping 23% as of noon ET and hitting 52-week highs.People are going to Shake ShackShake Shack is a burger chain with a little more than 500 locations worldwide. And whereas many other ...