UnitedHealth Group (NYSE:UNH), a major provider of health insurance and healtchare services, closed Tuesday at $282.69, down 19.61%. The stock sold off after  Q4 results showed plunging operational earnings, hefty restructuring charges, and weaker‑than‑expected 2026 revenue guidance. Trading volume reached 65.3 million shares, over 640% above its three-month average of 7.5 million shares. UnitedHealth Group IPO'd in 1984 and has grown 195,498% since going public. How the markets moved today The S&P 500 ...