The Stock Market Sounds an Alarm Triggered Just Once Before. History Says This Will Happen Next.

The S&P 500's CAPE ratio has exceeded 40 for two consecutive months, a level last seen during the dot-com bubble. Historically, this valuation metric has preceded 30% average declines over three years. However, the AI boom may differ from the internet bubble, as AI has achieved mainstream adoption faster and could drive earnings growth that supports higher valuations. Wall Street remains bullish, forecasting 22% upside to 9,072 by July 2027, with strongest growth expected in technology and communications sectors.