UnitedHealth Group Incorporated (UNH) vs Walmart Inc. (WMT)

UnitedHealth Group Incorporated is among the world’s largest private health insurers, providing medical benefits to roughly 51 million members globally as of December 2025, including about 1 million outside the United States. A leading provider of employer-sponsored, self-directed, and government-supported health plans, the company has built substantial scale in the medical insurance market. In addition to its core insurance operations, UnitedHealth’s Optum businesses expand its reach across healthcare services, spanning pharmacy benefits, outpatient care, and analytics for affiliated organizations and third-party clients.

Founded in 1962, Walmart Inc. has grown into the world’s largest retailer, operating more than 10,700 stores worldwide, including about 4,600 Walmart locations in the United States and roughly 600 Sam’s Club warehouses, while continuing to expand its e-commerce business. The company serves around 270 million customers each week and generated over $680 billion in fiscal 2025 revenue. Walmart’s operations are organized into three reporting segments: Walmart U.S., which accounted for 68% of fiscal 2025 sales, Walmart International at 18%, and Sam’s Club at 14%. In the U.S., nearly 60% of Walmart’s $465 billion in fiscal 2025 revenue came from grocery sales, with about one-quarter generated by general merchandise. Internationally, the company’s business is primarily concentrated in Mexico, with additional emerging exposure to India.