UnitedHealth Group on Tuesday posted first-quarter earnings that topped estimates and hiked its 2026 profit outlook, as the company better manages high medical costs and streamlines its operations. The nation's largest private insurer said it expects 2026 adjusted earnings of more than $18.25 per share, up from a previous outlook of more than $17.75 per share. UnitedHealth is maintaining its full-year revenue guidance of greater than $439 billion, which the company said in January reflects "