The Bentonville, Ark. retail giant had forecast "flat" sales for November. A key industry metric, the same-store figure measure the change in sales at stores that have been open for at least one year.
November's decline follows a paltry 0.5% same-store sales increase in October, which Wal-Mart had blamed on unusually strong sales in October 2005, when consumers in some regions scrambled to purchase items in the wake of Hurricane Katrina.
Wal-Mart didn't offer any explanation for November's results in Saturday's announcement. The company plans to issue a complete November sales report Thursday, when most other large retailers also plan to disclose monthly sales.
At the beginning of the month, Wal-Mart slashed prices on a slew of popular electronics products. Such strategies can be risky, however, because they pressure revenue and margins even as they generate headlines and lure more shoppers.
Retailers including Wal-Mart were aggressive in offering holiday promotions this week, and
shoppers flooded stores on Friday hoping to get bargains at the start of the traditional holiday shopping season.
Wal-Mart shares lost 13 cents Friday to close at $47.90.