Last updated: August 2026
| Market Cap | Approximately $380 billion (as of mid-2026, fluctuates with UNH share price) |
| Founded | 1974, as Charter Med Incorporated |
| Headquarters | Minnetonka, Minnesota, USA |
| Industry | Health insurance and healthcare services |
| CEO | Stephen J. Hemsley |
UnitedHealth Group is the largest health insurance and healthcare services company in the United States, serving more than 50 million people worldwide. Its market capitalization stood at roughly $380 billion as of mid-2026, making it one of the most valuable healthcare companies on earth despite a turbulent stretch for the business and its leadership.
Early Life & Family
UnitedHealth Group traces its roots to 1974, when Richard T. Burke founded Charter Med Incorporated to process health insurance claims for the Hennepin County Medical Society in Minnesota. The company was renamed United HealthCare Corporation in 1977 and grew rapidly through the 1980s by acquiring regional HMOs across the country.
Rise to Fame
Through the 1990s and 2000s, United HealthCare expanded aggressively via acquisitions and diversified beyond insurance into data, technology and care-delivery services, eventually rebranding as UnitedHealth Group with two core platforms: UnitedHealthcare, its insurance arm, and Optum, its health-services and technology arm.
Career History
UnitedHealth Group today operates through four reportable segments — OptumHealth, OptumInsight, OptumRx and UnitedHealthcare — spanning employer and individual insurance plans, Medicare and Medicaid coverage, pharmacy benefit management, data analytics and direct care delivery.
The company’s leadership has faced significant upheaval in recent years. UnitedHealthcare CEO Brian Thompson was fatally shot in a targeted attack in Manhattan on December 4, 2024, an event that drew intense national attention to the health insurance industry. Group CEO Andrew Witty subsequently stepped down in May 2025, and longtime former CEO Stephen Hemsley — who had led the company from 2006 to 2017 and remained chairman of the board — returned as chief executive.
How They Built Their Wealth
UnitedHealth Group’s scale comes from insuring and managing care for tens of millions of Americans while also owning much of the infrastructure around that care through Optum, including pharmacy benefit management, data analytics, and physician and clinic networks. This combination of insurer and care-services provider under one roof has been central to its revenue growth, though it has also drawn regulatory and public scrutiny over billing, denial and pricing practices.
Personal Life
As a corporation, UnitedHealth Group does not have a personal life in the traditional sense, but its recent history has been shaped by very public events — from the killing of a top executive to a subsequent leadership shake-up — that have kept the company in the news well beyond its quarterly earnings reports.
As the largest health insurer in the United States with a market capitalization near $380 billion, UnitedHealth Group remains a dominant force in American healthcare even as it navigates leadership changes and intense public scrutiny.