Amazon Surges Past Wal-Mart in Market Value

An employee uses a scanner to restock items on shelves in a picking tower at the Amazon.com Inc. fulfillment center in Poznan, Poland, on Friday, June 12, 2015.

Photographer: Bartek Sadowski/Bloomberg

Amazon.com Inc. rose 9.8 percent Friday after posting a surprise profit that showed investors the Web retailer can make money when it puts the brakes on investments.

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