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Walmart runs the world's biggest chain of stores and sells just about everything people need, from groceries to electronics, at low prices.
Walmart is the world's largest retailer. It sells groceries, household goods, electronics, clothes, and medicine through thousands of big-box stores, neighborhood markets, and warehouse clubs, and increasingly through its website and app. Most people use it for everyday essentials, especially food, because Walmart is usually the cheapest and most convenient place to buy them.
The money comes from selling stuff at thin margins and making up for it on volume. Walmart buys in enormous quantities directly from suppliers, runs a logistics network few rivals can match, and negotiates hard on price so it can undercut competitors while still turning a profit. It serves roughly 250 million customers each week across its global footprint. Its biggest competitors are Amazon, Costco, Target, and other grocers, but Walmart's scale and store density give it an edge in grocery, where fresh food and fast pickup matter. Beyond stores, Walmart has built several other revenue streams. Its warehouse chain Sam's Club charges membership fees and sells in bulk. Walmart's advertising business sells space on its website and in stores to brands that want to reach its shoppers, and it has grown fast because it carries high margins. Its marketplace lets outside sellers list products on Walmart's site, and Walmart takes a cut. It also offers financial services and health services in some markets. International stores in Mexico, Canada, and elsewhere add more revenue, though Walmart has pulled back from some markets to focus on stronger ones.
Walmart uses its cash to pay a rising dividend, buy back shares, and invest in automation and its online business. It has spent heavily on robots and technology to move goods faster and keep costs down. The company has bought back billions of dollars of stock over the years, which slowly shrinks the share count and lifts earnings per share. The main risks are thin retail margins, a huge workforce that is sensitive to wage pressure, and the constant threat from Amazon online, which is why Walmart keeps pushing e-commerce and faster delivery.
Saved answer · last researched 28 Oct 2026