Shares of UnitedHealth Group tumbled more than 15% in morning trade on Thursday after a report said that the Justice Department is investigating the health insurer for potential fraud.

UnitedHealth Group's stock has collapsed nearly 50% in 2025 after a leadership shake-up, surging medical costs, and a DOJ criminal probe into Medicare fraud.

"Leading the people of UnitedHealth Group has been a tremendous honor as they work every day to improve the health system and they will continue to inspire me," Witty said in a st

Former UnitedHealth Group chief executive officer Stephen Hemsley to replace Andrew Witty. Here's what we know.

Andrew Witty has resigned as chief executive of US health conglomerate UnitedHealth Group, as the company pulled its financial forecasts for 2025, adding to a sense of crisis after a turbulent period.

UnitedHealth Group is being investigated for possible Medicare fraud, according to The Wall Street Journal, sending shares of the healthcare company sliding in after-hours trading just one day after its CEO,