S&P 500 Records Highs, But Just Two Stocks Are Doing the Work

The S&P 500 has continued hitting new highs, but a Yahoo Finance report argues the rally's breadth is thin: Microsoft and Nvidia are described as carrying the entire market, meaning gains are concentrated in a handful of names rather than spread across sectors. That narrow-leadership pattern is a familiar late-cycle concern for investors who track index composition. The picture is not uniformly cautious. Separately, JPMorgan told clients it remains positive on equities and sees a rotation into other areas of the market as the next driver of further gains, according to Investing.com-sourced Yahoo Finance coverage. The two views sit side by side: one flags concentration risk today, the other bets that breadth improves from here. What remains unresolved is which view proves right first — whether the rotation JPMorgan expects actually broadens participation beyond Microsoft and Nvidia, or whether the index's gains keep depending on the same two names.