COST vs WMT — which stock performed better?

Costco Wholesale Corporation (COST) versus Walmart Inc. (WMT), Consumer Staples, on 2026-07-13.

Result

Costco Wholesale Corporation (COST) performed better on 2026-07-13. COST moved 0.760%, WMT moved -0.960%.

Why these two companies

Costco released its June sales report on July 8, showing net sales up 10.6% year over year, yet shares slid roughly 4-5% on July 9 as analysts flagged decelerating U.S. traffic and currency headwinds, with JPMorgan trimming its price target to $1,100. That selloff reignites the long-running debate between the two biggest names in American retail — premium warehouse-club leader Costco versus scale champion Walmart — just as PepsiCo's results this week hinted at a softening U.S. consumer. With both mega-cap retailers competing for the same value-seeking shoppers, it's a timely head-to-head.

The research

Costco and Walmart are the two giants of American retail. Costco runs members-only warehouse stores that sell goods in bulk at low prices, while Walmart is the world's biggest retailer, with thousands of stores plus a fast-growing online and delivery business.

One reason someone might pick Costco: it just reported that sales in June were up more than 10% from a year ago, and its shoppers are famously loyal, renewing their memberships year after year. One reason someone might pick Walmart: it keeps cutting prices to attract bargain hunters and is growing newer, profitable businesses like online advertising and delivery memberships.

One thing to keep in mind: even though Costco's June sales grew nicely, its stock fell this week because investors had hoped for even more, and a big bank lowered its price forecast. That shows a strong company can still see its stock drop if expectations were higher.

Another thing to watch: signs that shoppers are spending more carefully. If money gets tighter for households, both retailers can feel it — so a lot comes down to which one investors feel more confident about on the day.