Dollar Tree raised its full-year profit outlook after strong Q3 results, driven by nearly 3 million new households shopping at its stores — with 60 from incomes above $100,000. Lower-income shoppers increased their spending the fastest. Comparable sales rose 4.2, revenue hit $4.75B, and adjusted EPS came in at $1.21. The company now projects FY sales of $19.35B to $19.45B and EPS of $5.60 to $5.80.