The Charles Schwab Corporation announced that its proprietary Schwab Trading Activity Index™ $(STAX)$ decreased to 39.68 in May, down from 41.18 in April, continuing a downward trend. Despite Wall Street's strong performance in May, with the S&P 500 index climbing over 6%, Schwab clients used the rally as an opportunity to sell, particularly in the Information Technology, Communication Services, and Financial sectors. Notably, clients were net sellers of Nvidia $(NVDA)$ and Microsoft Corp. $(MSFT)$, among others. Conversely, they increased exposure to the Health Care sector and purchased stocks like Palantir Technologies Inc. (PLTR) and UnitedHealth Group Inc. $(UNH)$. Despite better-than-expected first quarter earnings across most sectors, concerns about debt levels pushed Treasury note yields higher, affecting the market. The STAX reading for May ranks "low" compared to historic averages, indicating a cautious stance among investors.