The Stock Market Just Breached a Never-Before-Seen Threshold -- and History Couldn't Be Clearer About What Happens Next

The S&P 500's P/B and Shiller P/E ratios are at record highs, signaling potential market trouble. Despite short-term fluctuations, historical data suggests long-term investors will likely see positive returns. The Motley Fool highlights investment opportunities beyond the S&P 500.