The S&P 500 has posted a green September for the first time in five years, closing with a 1.84% gain. This marks the index's first winning September since 2019. The S&P 500 also achieved a record close on Monday, capping a winning month and quarter. The index ended slightly higher despite a brief decline following comments from Federal Reserve Chairman Jerome Powell. The S&P 500's performance contributed to a strong third quarter, with the Dow Jones up 8.2%, the S&P 500 up 5.5%, and the NASDAQ up 2.6%. Additionally, September marked the fifth consecutive all-time high monthly close for the S&P 500. Tesla ($TSLA) also saw a significant rise, gaining 22% in September, marking its best month since June last year.