UnitedHealth Group is a holding company. Through its subsidiaries, Co.'s two business platforms, Optum and UnitedHealthcare, are working to help build a health system through improved access for the individuals and organization it serves. Co.'s segments are: Optum Health, which delivers care, care management, wellness and consumer engagement, and health financial services; Optum Insight, which provides data, analytics, research, consulting, technology and managed services solutions; Optum Rx, which provides pharmacy care services; and UnitedHealthcare, which includes UnitedHealthcare Employer and Individual, UnitedHealthcare Medicare and Retirement and UnitedHealthcare Community and State.