The S&P 500 index experienced a notable increase of 1.23% today, marking a robust performance with a 2.62% rise over the past five days and a significant 3.48% gain over the last 30 days. This upward trend reflects a mixed market environment, with a total of 2,259 stocks advancing compared to 2,443 declining, resulting in an advance-decline ratio of 0.92 across the market.
In the large-cap sector, QUALCOMM, Inc. emerged as the top performer, achieving an impressive return of 11.09%. Conversely, Newmont Corp. struggled, recording a decline of 5.69%. The mid-cap segment saw Super Micro Computer, Inc. leading with a return of 6.79%, while Anglogold Ashanti Plc faced challenges with a 5.22% drop.

Small-cap stocks displayed volatility, with Avidity Biosciences, Inc. soaring by 42.42%, while Intellia Therapeutics, Inc. plummeted by 42.23%. The advance-decline ratios varied across market caps, with large caps showing a strong ratio of 2.81, mid caps at 1.51, and small caps at 1.07, indicating a generally positive sentiment among larger stocks.