Core Insights - UnitedHealth is experiencing volatility due to CEO departure and ongoing DOJ investigation [1][5] - Warren Buffett's investment of $1.57 billion has positively impacted the stock, which has risen nearly 40% in the past month [2] - The company operates through two main divisions: UnitedHealthcare and Optum, focusing on insurance plans and health services [3] Company Overview - UnitedHealth is a major player in the U.S. healthcare and insurance sectors, with a market capitalization of $315.10 billion [4] - The company serves millions and combines data-driven solutions with extensive care networks [3][4] Stock Performance - Over the past 52 weeks, UNH stock has declined by 42.3%, and is down 31.6% year-to-date [5] - Recently, the stock has shown recovery, gaining 38.7% in the last month and 12.7% in the past five days [5] - The stock reached a three-month high of $351.71 on September 9, only 1.7% below this peak [5] Valuation - UNH is trading at a price-to-earnings ratio of 15.05, which is lower than the industry average of 26.55 [6]