EBay Inc. slid 2 percent for the steepest loss in the S&P 500, Bloomberg News reported. Its sales rose 9.6 percent from Thanksgiving through Dec. 22, versus the same period in 2012, ChannelAdvisor said, but that was slower than the 21 percent increase from Thanksgiving through Dec. 15. Also, on Dec. 19 eBay said it had completed its acquisition of Braintree, an “innovative global payment …
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