EBay shares jump on earnings EBay's stock price moved to an eight-year high Thursday after its fourth-quarter revenue topped analysts' estimates, helped by record holiday sales on the Web and mobile devices. U.S. sales volume not coming from eBay Motors is the metric everyone focuses on," said Gil Luria, an analyst at Wedbush Securities Inc. "It's the best indication of the health of the core business in the U.S. Mobile users tend to complete purchases more often than those browsing on desktop computers, and mobile garners a quarter of new customers, drawing younger shoppers to the site, he said. EBay's acquisition of credit card scanning company Card.io last year will further that goal, because the technology makes it easier for new users to sign up, he said. "Picture by the end of this year, you download the eBay or PayPal mobile app, you take a picture of your driver's license, and you take a picture of your credit card, and that's registering," Donahoe said in an interview.