U.S. equities were mixed at midday, with tech shares and a better-than-expected consumer inflation report lifting the S&P 500 and Nasdaq.

UnitedHealth Group (UNH) stock slumped 10.4% in Tuesday's premarket after the United States' largest private health insurer said it would suspend guidance for 2025 due to increasing healthcare costs. The sell-off sent shares down to a more than four-year low near $340.

UnitedHealth Group (UNH) stock plunged amid CEO resignation and rising medical costs leading to sector-wide selloff in managed care stocks. Read more here.

While both the S&P 500 and Nasdaq Composite gained in early Tuesday trading, the Dow Jones Industrial Average was solidly in the negative — down by around 0.4%. The discrepancy in the indexes was due to one stock in particular: UnitedHealth Group.

UnitedHealth Group (UNH) is one of the stocks most watched by Zacks.com visitors lately. So, it might be a good idea to review some of the factors that might affect the near-term performance of the stock.

UnitedHealth Group Incorporated stock drops after a rare earnings miss and CEO resignation. Click for the impact and potential buying opportunity in UNH at $335.

A group of investors this week filed a proposed class-action lawsuit against UnitedHealth Group, alleging that the company withheld information following the murder of UnitedHealthcare CEO Brian Thompson last December.