Core Insights - A significant segment of the U.S. stock market, particularly companies with strong balance sheets and stable earnings, is underperforming compared to the broader market, reminiscent of the dot-com bubble in 1999 [1][2] Performance Comparison - The S&P 500 Quality Index has lagged behind the broader S&P 500 index by the largest margin in 26 years, with a return of 15.13% over the last six months compared to the S&P 500's 23.76% [2][3] - Year-to-date (YTD) performance shows the S&P 500 Quality Index at 10.52% and the S&P 500 at 15.08%, while the one-year performance is 9.57% for the Quality Index versus 16.60% for the S&P 500 [4] Index Composition - The S&P 500 Quality Index tracks 100 stocks with the highest quality scores based on return on equity, accruals, and financial leverage, including major companies like Apple Inc., Mastercard Inc., General Electric Co., and Costco Wholesale Corp. [4] Divergence in Top Constituents - Performance among top constituents of the Quality Index shows significant divergence, with industrial stocks like Caterpillar Inc. and GE Vernova Inc. posting gains of 66.81% and 91.38% respectively, while consumer staples like Procter & Gamble and technology firm Adobe reported negative returns [5][6] - Even a strong performance from Apple, the largest constituent, with a gain of 29.78%, was insufficient to match the broader market's rally [6] Sector Performance - The top three constituents of the Quality Index include: - Apple Inc. (29.78% six-month performance) - Mastercard Inc. (11.84% six-month performance) - General Electric Co. (61.56% six-month performance) [7] - Conversely, Procter & Gamble and Adobe experienced declines of -7.16% and -4.35% respectively over the same period [8]