UnitedHealth Group names new CEO, shares slide

Group 1 - UnitedHealth Group announced that Chairman Stephen Hemsley will return as CEO, succeeding Andrew Witty, who stepped down for personal reasons [1] - Hemsley previously served as CEO from 2006 to 2017 and commended Witty's leadership during challenging times [1][8] - The company aims to return to its long-term growth objective of 13% to 16% as it sees "tremendous opportunities to grow" [6] Group 2 - The company suspended its 2025 outlook due to accelerating care activity and an expansion of benefit offerings [6] - Medical costs for many new Medicare Advantage beneficiaries at UnitedHealthcare were higher than expected, but the company anticipates returning to growth in 2026 [7] - Following the murder of Brian Thompson, the head of UnitedHealthcare, Tim Noel took over the insurance unit, and the incident sparked a national conversation about the U.S. health care system [2][4]