The U.S. stock market experienced a mixed performance today, with the S&P 500 index declining by 0.32%. However, over the past 30 days, the index has shown a positive trend, rising by 2.02%. In the large-cap sector, KKR & Co., Inc. emerged as the top performer, delivering a return of 6.88%. Conversely, Monster Beverage Corp. faced significant challenges, recording a steep decline of 50.2%. Mid-cap stocks also displayed varied results, with Pure Storage, Inc. leading the pack with an impressive return of 11.64%. AECOM, on the other hand, struggled, posting a loss of 8.53%. Small-cap stocks saw Hertz Global Holdings, Inc. shine with a return of 15.57%, while OppFi, Inc. lagged behind with a decline of 24.86%. Overall, the advance-decline ratio across the market indicated a healthy breadth, with 2,208 stocks advancing compared to 1,688 declining, resulting in a ratio of 1.31. This positive sentiment was echoed in the small-cap sector, where 766 stocks advanced against 557 that declined, yielding a ratio of 1.38.