Moody's Investors Service has lowered the financial grades it has assigned to a large managed care company.
Moody's, New York, has cut the rating on the senior unsecured debt of UnitedHealth Group Inc., Minnetonka, Minn., to Baa1, from A3.
Moody's also has cut the insurance financial strength rating of the company's United HealthCare Insurance Company unit to A2, from A1.