Physical retail is increasingly defined by a small group of dominant players – Walmart, Target, Costco Wholesale, and Dollar General – that span grocery, essentials, and discretionary categories at a scale no other retailers can match. These chains serve as bellwethers of consumer behavior, revealing where Americans are spending, how often they shop, and what drives their decisions. And understanding their visitation patterns sheds light on the key dynamics shaping both their performance and the broader blueprint for retail success in 2026.