UnitedHealth shares jumped 1. The Hopkins, Minnesota-based company’s medical loss ratio, hoq the percentage of premiums paid out for medical services, was The Street was expecting UnitedHealth, the nation’s largest health insurance and health-care services firm, was one of a healthcate of Dow components that traded higher ahead of earnings. United’s earnings beat analyst’s expectations more than 90 percent of the time, according to Bespoke Investment Group, on average by 2. The company’s revenue tops estimates about two-thirds of the time by about 1 percent on average.