Historically, September has been one of the weaker months for the S&P 500.

Over the long term, the average return for the S&P 500 in September has typically been negative or close to zero. For instance, from 1928 through 2023, the average return in September has been around -0.5% to -1%. However, these figures can vary slightly depending on the specific time period and market conditions being analyzed. It's worth noting that while September is historically weaker, past performance isn't necessarily indicative of future results.