UPDATE 4-Starbucks' promotions struggle to attract U.S. customers, shares slip
April 26, 2018 at 18:37 PM EDT
LOS ANGELES, April 26 (Reuters) - Starbucks Corp on Thursday reported stagnant store traffic at established U.S. cafes for the second quarter in a row, stirring concerns about intense competition from upscale coffee houses as well as fast-food chains and convenience stores.