What you need to know: The coffee chain reported 7% growth in sales at stores open at least 13 months for the period ending March 29, an improvement over two consecutive quarters of 5% growth. Analysts had predicted those store sales would rise 5% for a third straight reporting period. The company’s sales were $4.6 billion, up 18% from $3.87 billion in the same period last year. Foot traffic ticked up 3% globally.