S&P 500 معمولا در ماه سپتامبر سقوط می کند. چرا امسال باید متفاوت باشد.

The S&P 500 usually falls in September. Why this year should be different.

As U.S. stocks head into September, a key trading level suggests the S&P 500 could dodge a big loss in what is historically a turbulent month.