The stock market has entered its worst 10-day stretch of the year historically

Here is a paywalled article about the historic performance of stocks at the end of Sept. There seems to be a historic dip on Sept 30 when mutual funds dump and rebalance their portfolios for the end of quarter/fiscal year.

https://archive.ph/RpV7W

Paywall:
https://www.cnbc.com/2023/09/19/stock-market-entering-worst-10-day-stretch-of-the-year-historically.html