
The "most difficult" month for the US stock market has begun

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Data from the past nearly 100 years shows that September is the month with the worst average performance for the S&P index. What happens when the "worst month" coincides with the "sharp rise since April and record low volatility" in the U.S. stock market?
Data from the past nearly 100 years shows that September is the month with the worst average performance for the S&P index.
What happens when the "worst month" meets the "sharp rise since April, with volatility hitting new lows" in the U.S. stock market?