Wall Street mixed as tech gains offset Dow losses ahead of midterm elections

Wall Street closed with mixed results on Tuesday, as tech stock gains lifted the Nasdaq and S&P 500 while the Dow Jones fell, with investors focused on the US midterm elections. Nvidia rose 2.3%, Micron 2.6%, and Microsoft and Amazon gained over 2%, while Apple dropped 1.9% after warning that rising memory chip costs will pressure its profit margins. The Dow fell 197.26 points to 51,786.72, the Nasdaq rose 207.64 points to 25,372.01, and the S&P 500 gained 27.52 points to 7,568.92. Market sentiment remained cautious due to high AI investment costs and uncertainty over returns. The midterm election results will determine Congress control and could affect tax policy, public spending, and business regulations.