The S&P 500 index experienced a notable increase of 0.69% today, continuing its upward trend with a rise of 1.07% over the past five days and 1.66% over the last thirty days. This positive momentum reflects a broader market sentiment, as the advance-decline ratio indicates that 2,324 stocks advanced compared to 1,971 that declined, resulting in a ratio of 1.18. In the large-cap segment, Corning, Inc. emerged as the top performer with a return of 7.32%, while Cloudflare, Inc. faced challenges, recording a decline of 8.05%. Mid-cap stocks saw Coherent Corp. leading with a return of 6.75%, whereas Okta, Inc. struggled with a drop of 9.18%. The small-cap sector was dominated by RingCentral, Inc., which surged by 34.4%, contrasting sharply with Cogent Communications Holdings, Inc., which fell by 29.36%. The advance-decline ratios across market capitalizations further illustrate the market's strength, with large-cap stocks showing a ratio of 1.81, mid-cap stocks at 2.11, and small-cap stocks at 1.53. This data underscores a robust market environment, with more stocks advancing than declining across all segments.