ToplineShake Shack’s stock surged Thursday after the burger chain smashed expectations for its quarterly financial results, sending its shares to their priciest level in more than two years.Shake Shack stock popped Thursday.UCG/Universal Images Group via Getty Images Key FactsShake Shack’s stock popped as much as 26% to $98.67 in Thursday trading in the wake of its fourth-quarter earnings report. The rally sent Shake Shake shares to their highest intraday level since Nov. 5, 2021, and Thursday is on track ...