candidate: Walmart Stores U.S. - 4,092 total units as of January 31 , 2014 * Walmart Discount Stores ( 508 ) * Walmart Supercenters ( 3,288 ) * Supermarkets ( 346 ) - includes Neighborhood Market , Amigo and Supermercado stores * Small Format Stores ( 61 ) - includes Walmart Express , Walmart on Campus and Super Ahorros stores * Walmart.com Sam 's Club ( 632 ) Logistics * Walmart Transportation LLC * Distribution Centers / Transportation Offices ( 130 ) Walmart Realty Claims Management , Inc. Walmart Portrait Studios was rebranded as PictureMe !