Key Points The S&P 500 has advanced 1.9% this month amid positive corporate news and optimism about a possible interest rate cut. Valuations are at one of their highest levels ever. 10 stocks we like better than S&P 500 Index › Investors often approach the month of September with a bit of apprehension. That's because, over time, this month has been the worst month for the stock market, generally resulting in losses for the S&P 500 (SNPINDEX: ^GSPC). Over the past 75 Septembers, the index has delive ...