Walmart reported its slowest growth in United States comparable sales in six years during its most recent quarter, and the retailer’s guidance for the rest of the year was seen as cautious by Wall Street. Walmart’s second quarter fanned anxiety about the financial well-being of low-income shoppers, who are spending cautiously as prices rise at the gas pump and everywhere else. Company shares tumbled more than eight per cent on Thursday and helped drag the United States stock market lower as well.

Walmart shares fell 8% despite strong second-quarter results, with revenue rising 5.9%, e-commerce sales jumping 23% and operating income increasing 28.8%. Investors focused on…

By Nora Redmond and Bill Peters