Shares of UnitedHealth Group (NYSE: UNH) are falling on Thursday. The collapse comes as the S&P 500 gained 0.1% and the Nasdaq Composite fell 0.4%. The troubled health insurance giant is facing reports of a Department of Justice (DOJ) investigation into possible Medicare fraud.

UNH shares plunge impacts 391 ETFs, shaking institutional & retail investors. Explore top ETFs most affected and what's behind the company's downturn.

UnitedHealth faces AI backlash after nH Predict's 90% error rate and a DOJ probe. With more than 1,000 AI applications from call routing to claims efficiency and a robust responsible AI policy, the company aims to balance innovation with trust in a high-stakes bid to reshape healthcare.

U.S. equities were mixed at midday, with the Dow Jones Industrial Average and S&P 500 slightly higher and the Nasdaq marginally lower.

UnitedHealth Group's stock has plunged nearly 50% due to the CEO resignation, withdrawal of guidance, and ongoing legal issues, creating a potential buying opportunity. The stock is deeply oversold with an RSI of 15, trading below both the 200-day and 50-day moving averages, indicating capitulation.

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.

UnitedHealth faces valuation reset amid CEO change, regulatory probes, and cost overruns. Click here for a full analysis of UNH stock.