Dollar Tree (DLTR.US) stock jumped nearly 5% despite the fact that the company posted mixed quarterly earnings. The discount retailer earned $2.13 per share, compared to analysts' expectations $2.11. Revenue, however, missed expectations. The company reported sales of $6.77 billion, slightly below market forecasts of the $6.79 billion. Comparable-store sales rose 4.9%, short of the 5.5% consensus estimate.
