Shake Shack (SHAK) shares tumbled 7.74% in pre-market trading on Thursday, despite the fast-casual restaurant chain reporting better-than-expected second-quarter earnings. The company's mixed results have left investors questioning its growth trajectory and future prospects.

For the second quarter, Shake Shack reported revenue of $356.5 million, surpassing the IBES estimate of $354.1 million. The company's adjusted earnings per share (EPS) came in at $0.44, also beating the expected $0.38. However, same-Shack sales growth was modest at 1.8%, potentially raising concerns about the company's ability to drive traffic and sales in existing locations.

While Shake Shack's Q2 performance exceeded analyst expectations in key metrics, the significant stock decline suggests that investors may be focusing on other factors not immediately apparent in the headline numbers. These could include concerns about rising costs, competitive pressures, or disappointing guidance for future quarters. The market's reaction highlights the importance of looking beyond top-line numbers and considering the broader context of a company's financial health and growth prospects.