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An employee walks with a shopping cart outside a Save-A-Lot store in St. Louis, Missouri, on May 20, 2010.

Retailer Supervalu Inc. is working with an adviser to consider options including a potential sale, according to people familiar with the matter.

Supervalu is mainly a grocery wholesaler, providing products to more than 1,800 stores. The company also operates almost 200 locations after selling most of its brick-and-mortar operations in recent years. Its private label brands include Wild Harvest, for gluten-free diets, and Stone Ridge Creamery ice cream.

No final decision has been made and Supervalu may choose not to pursue a sale, said the people, who asked not to be identified…