Costco Wholesale CorporationCOST

Operates a membership-based warehouse retail model offering bulk groceries, general merchandise, and ancillary services such as fuel and pharmacies. The company generates the majority of its operating income from recurring membership fees, supporting a high-volume, low-margin merchandising strategy across the U.S. and international markets. Investors track its performance as a gauge of consumer spending trends, pricing power in staples, and traffic resilience in a competitive retail environment.