The Federal Reserve announced a 50 basis point interest rate cut, and U.S. stocks collectively rose and closed down

On September 18, US stocks rose and fell, and the three major indices collectively closed down. As of the close, the Dow fell 0.25% to 41,503.1 points, the S & P 500 index fell 0.29% to 5,618.26 points, and the Nasdaq fell 0.31% to 17,573.3 points. Among them, the Dow and S & P 500 indices both hit intraday highs.
Technology stocks were mixed, with most banks falling, airlines mixed, and chip stocks generally falling.