DSW Inc. stock plummeted after the discount shoe retailer turned in a dismal first-quarter report. Total sales edged down 0.4 percent to $599 million; same-store sales fell 3.7 percent. CEO Mike MacDonald called it "a challenging quarter due to unseasonal weather and an aggressively promotional retail environment." Earnings per share fell from 50 cents a year earlier to 42 cents. DSW now projects adjusted full-year earnings of $1.45 to $1.60, down from a former projection of $1.80 to $1.95. Analysts expected $1.90.