The company issued second-quarter guidance with net sales expected to increase 3.5 percent to 4.5 percent, but maintained its full-year guidance of net sales to increase between 3 percent and 4 percent from last year, and for adjusted earnings per share to range from $2.50 to $2.60.

Walmart, which became the nation's largest retailer by making low prices a priority, has found itself in a place it's rarely been: Warning customers that prices will rise for goods ranging from bananas to car seats.

Walmart’s sales rose 2.5 percent, narrowly missing analysts’ expectations. Experts say the retail giant may be better situated than some competitors to endure a trade war.