Yahoo Finance analysis points to an "extreme disconnect" between the current U.S. stock market and consumer confidence. As of September 2026, the University of Michigan Consumer Sentiment Index has fallen below 48, near historical lows, while the S&P 500 has set multiple new all-time highs this year and is currently only down 2.5% from its latest record. The Nasdaq Composite and Dow Jones Industrial Average are also about 4% away from their new highs.

The article suggests that this disconnect may be partly attributed to massive spending in the artificial intelligence (AI) sector. Tech giants such as Microsoft, Meta, Amazon, and Google parent company Alphabet collectively invested $303 billion in AI-related infrastructure, including data centers, in the first half of 2026, driving explosive returns for large-cap tech stocks and boosting the overall market. However, Bank of America's July Global Fund Manager Survey revealed that approximately 45% of fund managers consider the AI bubble to be the biggest tail risk facing the market today.