The S&P 500 index experienced a modest increase of 0.47% today, reflecting a positive trend over the past week with a gain of 1.19%. However, the index has seen a slight decline of 0.02% over the last 30 days, indicating some volatility in the market. In terms of market performance across different capitalizations, the advance-decline ratio shows a healthy overall market with 2,288 stocks advancing compared to 2,081 declining, resulting in a ratio of 1.1. Large-cap stocks also demonstrated strength, with 127 advancing against 107 declining, yielding a ratio of 1.19. Mid-cap stocks outperformed with 147 advancing and 115 declining, achieving a ratio of 1.28. Conversely, small-cap stocks faced challenges, with 719 advancing and 733 declining, resulting in a ratio of 0.98. Among the top performers, AppLovin Corp. led large-cap stocks with a return of 13.19%, while Ubiquiti, Inc. topped mid-cap stocks with a return of 14.47%. In the small-cap sector, Valaris Ltd. stood out with an impressive return of 34.31%. On the downside, Kyndryl Holdings, Inc. faced significant losses, down 54.92%.