Tuesday trading, after the retail giant extended its streak of earnings beats and raised its full-year outlook, citing strength in e-commerce and as in-store volumes grew. Walmart’s U.S. business saw general-merchandise sales turn positive — a sign that consumers are buying discretionary items again.

Walmart Inc. boosted its outlook for the year on strong demand from US consumers searching for value, driving shares up 4% in premarket trading in New York.

The bellwether retailer reported higher-than-expected sales in its latest quarter and upgraded its forecast for the rest of the year.

Walmart may have started out as a retailer geared to budget-sensitive consumers, but its customer base is continuing to grow, thanks to more affluent shoppers. The retailer saw share gains in new shoppers across income levels mainly led by upper-income households,