The Stock Market Just Passed a Threshold It's Only Crossed Once in 150 Years. Don't Ignore History. (opens in new tab)

The S&P 500 has surged 79% since 2022, and one closely watched valuation gauge just did something it has done only once in 150 years. Here's what the Shiller P/E hitting 40 says about where the market goes next -- and why history is worth heeding.