UnitedHealth Group (NYSE: UNH) faced a number of challenges in 2025 that weighed on stock performance: from the higher costs of healthcare, which hurt earnings, to a Justice Department probe into its Medicare billing practices. The stock slid 53% from the start of the year through early August. But the health insurance giant didn't sit still. Instead, UnitedHealth made moves to address its earnings challenges, commissioned an independent review of its processes to ensure top performance, and set solid reco ...