The Dow Jones opened down 0.2%, the S&P 500 down 0.3%, and the Nasdaq down 0.4%

Health insurance concept stocks surged, with Medicare rates in the US set to increase by 2.48% next year. Alignment Healthcare rose by 12.4%, Humana by 9.9%, UnitedHealth by 7.3%, and CVS Health by 7.1%. Broadcom increased by 3.3% as it is developing the next generation of artificial intelligence chips for Google and has signed an agreement with Anthropic to expand cooperation. Casey's General Stores rose by 0.8% and will replace Hologic in the S&P 500 index before the market opens on Thursday.