The S&P rose over 8% in September, marking its best performance for the same period in the last fifteen years, supported by AI and expectations of interest rate cuts from the Federal Reserve

The S&P 500 Index closed up 27.25 points, an increase of 0.41%, at 6688.46 points, with a cumulative increase of 3.53% in September, a cumulative increase of 7.79% in the third quarter, and a cumulative increase of 13.72% from January to September—expected to continue the previous two years' performances of 24.23% and 23.31%.

The Dow Jones Industrial Average closed up 81.82 points, an increase of 0.18%, at 46397.89 points, with a cumulative increase of 1.87% in September, a cumulative increase of 5.22% in the third quarter, and a cumulative increase of 9.06% from January to September, following increases of 13.70% and 12.88% in the previous two years.

The NASDAQ Composite Index closed up 68.855 points, an increase of 0.31%, at 22660.009 points, with a cumulative increase of 5.61% in September, a cumulative increase of 11.24% in the third quarter, and a cumulative increase of 17.34% from January to September, following increases of 43.66% and 28.64% in the previous two years.

The NASDAQ 100 Index closed up 68.636 points, an increase of 0.28%, at 24679.988 points, with a cumulative increase of 5.40% in September and a cumulative increase of 8.82% in the third quarter