The stock market faced a turbulent day as heightened anxiety surrounding artificial intelligence led to a sharp decline in tech stocks, including significant losses for Nvidia and other major players. After a brief morning rally, where the Dow Jones gained 700 points, market sentiment quickly soured, resulting in an erosion of gains by the end of the session. Overall, the Dow closed down more than 550 points, with the S&P 500 and Nasdaq also registering considerable drops. Analysts highlighted concerns over an AI bubble and ongoing valuation issues as key drivers of the sell-off, alongside uncertainties regarding future interest rate cuts. As investors reassess their strategies amidst these fluctuating conditions, questions arise about the durability of recent rebounds and the overall stability of the market.