Dollar Tree Inc. reported disappointing second-quarter earnings, with revenue of $7.37 billion, up 0.7% year-over-year but missing the estimated $7.5 billion. The company's adjusted diluted earnings per share (EPS) came in at $0.67, significantly below the expected $1.06. Dollar Tree attributed part of the earnings miss to a shortfall in comparable sales, which was influenced by macroeconomic pressures affecting the purchasing behavior of its middle- and higher-income customers. Adjusted net income for the quarter was $143.4 million. Same-store sales for Dollar Tree increased by 1.3%. As a result, the company has cut its full-year guidance, forecasting revenue between $30.6 billion and $30.9 billion, and adjusted diluted EPS between $5.20 and $5.60, both below consensus estimates. The stock dropped 13% in pre-market trading following the announcement.