The health care giant's shares are down more than 50% in the last month. That's hurting the powerful U.S. stock-market index.

UnitedHealth Is One of the Worst S&P 500 Stocks In 2025. Here's Why It's Having an Even Bigger Impact on the Dow Jones.

The Dow Jones led the mixed stock market action Thursday. Spotify, Microsoft and Visa are in or near buy zones.