15 Worst-Performing S&P 500 Stocks in September
MarketWatch reports that while the S&P 500 gained slightly in September, three-quarters of its components declined, highlighting a narrow market.

MarketWatch has published a list of the 15 worst-performing S&P 500 stocks for September. According to the report, the S&P 500 index itself gained slightly over the month, but three-quarters of its constituent stocks declined.
The article, published on September 30, 2026, suggests a month of significant divergence within the index. The source attributes the overall gain to a small number of stocks, while the majority of companies saw their share prices fall.

The specific stocks on the list are not detailed in the RSS description. MarketWatch notes that the performance data reflects the close of the month.
This summary is based solely on the information provided in the RSS feed and does not include additional analysis or speculation.
Frequently asked questions
What was the overall performance of the S&P 500 in September?
According to MarketWatch, the S&P 500 gained slightly in September.
How many S&P 500 stocks declined in September?
The RSS description states that three-quarters of the index's components declined.