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.