Mastercard Incorporated (MA) vs UnitedHealth Group Incorporated (UNH)

Mastercard Incorporated is the world’s second-largest payment processor, handling nearly $11 trillion in payment volume during 2025. The company operates in more than 200 countries and territories and processes transactions in over 150 currencies worldwide.

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.