The S&P 500 index currently sits within 0.2% of its record high, yet market breadth remains narrow. Data indicates that 41% of the index's components are trading more than 30% below their all-time highs, while 84% are at least 10% below their peaks. Additionally, 17% of the index members have experienced declines exceeding 50%.
Market concentration is significant, as Nvidia, Apple, and Microsoft account for approximately 20% of the S&P 500. Analysts attribute the index's performance to artificial intelligence stocks. Excluding these AI-related companies, a Goldman Sachs index showed a gain of 6.7% over the six months leading to October 6, compared to an 18.3% rise for the broader S&P 500.
Sector performance varies widely. Real estate leads the decline, with 97% of its stocks trading at least 10% below their highs, followed by materials at 96%, utilities at 94%, and consumer discretionary at 92%. Conversely, energy, healthcare, and information technology have shown more resilience, with 62%, 70%, and 72% of their respective members trading below their peaks.
Macroeconomic factors, including Treasury yields hitting 24-year highs on October 7, continue to impact rate-sensitive sectors like real estate and utilities. Market experts suggest that any potential shortfall in corporate capital expenditure on artificial intelligence could affect future earnings and further expose the lack of a broad base within the index.






