Shares of Luckin Coffee Inc. jumped 20% Friday in their trading debut on the Nasdaq Stock Market as the Chinese coffee chain takes on Starbucks Corp.Luckin has become a rival to Starbucks in China largely through its delivery system, which guarantees shipment within a half-hour in major cities. Starbucks has responded by expanding its delivery business in the country. Luckin’s...

Source: Wall Street Journal May 17, 2019 16:24 UTC