Backed by the strongest food unit volume growth in four years and a continued surge in discretionary merchandise, Walmart announced it would increase its net sales growth projections for the full year during its third-quarter earnings call on Tuesday.

The big-box retailer beat earnings and revenue expectations, putting Wall Street in a celebratory mood, as Walmart’s stock price rose almost 4% by midday.

Following the strong earnings report, Walmart raised its full-year guidance. The retailer now expects full-year sales to grow by 4.8% to 5.1% (compared to the original forecast of 3.75% to 4.75%) and operating income to increase by 8.5% to 9.25% (compared to 6.5% to 8% previously).

In the U.S., net sales came in at $114.9 billion, a 5% year-over-year increase. Comparable sales excluding fuel were up 5.3% from a year ago. Transactions rose by 3.1% year over year, and the average ticket increased by 2.1%.

Share gains in the third quarter, in both transaction counts and unit volumes, were primarily driven by upper-income households.

“We’re broadening our assortment, improving customer experience, and earning their trust, while seeing share gains as a result,” Walmart CFO John David Rainey said during the earnings call. “We’re also realizing the benefits from the investments we’ve made in our core omni-retail business and seeing improved profitability with newer businesses.”

Ecommerce remained strong, with Walmart posting a 22% increase year over year. Store-fulfilled delivery grew nearly 50% and surpassed a $2.5 billion monthly run rate. This marked the 12th consecutive month that the Bentonville, Ark.-based retailer had deliveries exceeding $2 billion.

Walmart Connect grew by 26% year over year, and membership income was up by double digits.

Rainey also mentioned that Walmart generated mid-teens growth in health and wellness, largely due to branded pharmacy scripts, including GLP-1.

“U.S. customers remain resilient, with behaviors largely consistent over the past four to six quarters,” Rainey said. “They continue to seek value to maximize their budgets while also choosing convenient options to save time.”

On the Sam’s Club side, net sales excluding fuel were $20.3 billion, a 7.2% year-over-year gain. Comparable sales excluding fuel were up 7%. Transactions increased by 6.4%, while the average ticket rose by 0.5% year over year.

Sam’s Club saw strong sales growth across both club and digital channels for the quarter, driven by food and health and wellness categories.

Ecommerce sales grew by 26%, and membership income spiked by 15%.