There is a supermarket price war brewing in the United States, as low-cost German supermarket Aldi is on pace to become the second-biggest supermarket chain in the country behind Walmart. Aldi had 2,626 stores in 2025, slightly behind the 2,689 Kroger locations and 3,556 Walmarts. With 3,200 locations planned by the end of 2028, Aldi intends to mount a serious challenge to Walmart, which has a 20.8 percent market share for U.S. sales of grocery, personal care, household supplies and baby goods. Additionally, Aldi needs only 10,000 to 20,000 square feet of retail footprint, considerably less than the 50,000 square feet of a typical supermarket and the 200,000 square feet of a Walmart Supercenter. Aldi’s German thrift makes it a unique competitor to Walmart, too: According to one analysis, Aldi was 12 percent cheaper on average than Walmart was.
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