The S&P 500 Is Flashing a Rare Historical Warning Signal Not Seen in 27 Years, and What It Could Mean for Investors

Key Points The Shiller CAPE ratio is at one of its highest levels since the dot-com bubble. But history shows that trying to time the market is nearly impossible. Taking your money out now could mean missing out on future returns. 10 stocks we like better than S&P 500 Index › The stock market has been on a fantastic ride over the past several years. The S&P 500 (SNPINDEX: ^GSPC) is up 70%, the Dow Jones Industrial Average (DJINDICES: ^DJI) has risen 50%, and the Nasdaq Composite (NASDAQINDEX: ^IXIC) has gained an impressive 89% over the past three years. What's not to like, right? The problem is that the S&P 500 is flashing a warning signal that it hasn't shown since the dot-com bubble burst.