Police don't know who he is, where he is, or why he did it. As the frustrating search for UnitedHealthcare CEO Brian Thompson’s killer got underway for a fifth day Sunday, investigators reckoned ...

Luigi Mangione was indicted Thursday on a federal murder charge in the killing of UnitedHealthcare CEO Brian Thompson, a required step as prosecutors work to make good on the Trump administration ...

It operates through the following segments: UnitedHealthcare, OptumHealth, OptumInsight, and OptumRx. The UnitedHealthcare segment utilizes Optum's capabilities to help coordinate patient care ...