Portillo's Inc. (PTLO) shares tumbled 5.16% in pre-market trading on Tuesday following the release of the company's second-quarter financial results for 2025. The fast-casual restaurant chain's performance fell short of market expectations, particularly in terms of revenue.

According to the company's report, Portillo's posted Q2 revenue of $188.5 million, significantly missing the IBES estimate of $196.3 million. This shortfall in top-line performance appears to be the primary driver behind the stock's pre-market decline. Despite the revenue miss, the company's earnings per share (EPS) of $0.12 were in line with expectations.

Other key financial metrics from the report include operating income of $17.5 million and net income of $10 million for the quarter. The company's restaurant-level adjusted EBITDA came in at $44.5 million, with a margin of 23.6%. While these figures provide a mixed picture of Portillo's performance, the market's negative reaction suggests that investors were particularly focused on the revenue shortfall, possibly indicating concerns about the company's growth trajectory in a challenging economic environment.