Amazon reported a Q2 operating margin, or how much is made on sales after operating expenses, of 11.4% on a worldwide basis, down from 11.8% in Q1 but better than 9.9% in last year's Q2. For North America,

Amazon.com Inc. dropped in late trading after projecting weaker-than-expected operating income and trailing the sales growth of its cloud rivals, leaving investors searching for signs that the company’s huge investments in artificial intelligence are paying off.