UnitedHealth Group Incorporated (UNH) vs Visa Inc. (V)

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.

Visa Inc. is the world’s largest payment processor. In fiscal 2025, the company handled nearly $17 trillion in total payment volume. Visa operates in more than 200 countries and territories and processes transactions in over 160 currencies. Its network is capable of handling more than 65,000 transactions per second.