Sam’s Club, the warehouse chain owned by Wal-Mart Stores Inc., said it will close around 10% of its 660 U.S. stores over the next few weeks, the latest retailer to shrink its footprint as Americans shift more spending online.

Up to a dozen of the 63 stores will become e-commerce fulfillment centers to help support e-commerce efforts, the company said. Sam’s Club is closing underperforming stores in Alaska, Texas, New Jersey and other states.

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