The S&P 500 Is Expecting Something Extraordinary. History Says Investors Should Be Careful What They Wish For.

The S&P 500 is forecasted to achieve 31% year-over-year earnings growth in Q3 2026, primarily driven by AI and tech companies, with a forward P/E ratio of 21. However, the article warns that most of this growth is already priced in and concentrated in a narrow set of companies, creating downside risk if AI spending slows or geopolitical factors reverse. Historical precedent suggests such extraordinary growth rates can precede market corrections.