A worker puts together orders at the Amazon logistics center in Brieselang, in this November 11, 2014 file photo. Amazon.com Inc's shares surged more than 20 percent in early trading July 24, 2015, adding more than $46 billion to the compnay's market value, after strong growth in the e-commerce giant's cloud business drove a surprise quarterly profit. REUTERS/Hannibal/Files
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Amazon gets Rivian profit boost – with insight from The Wall Street Journal
Amazon said profit nearly doubled in the critical holiday period, as the company managed to control labor and supply costs better than expected.

