Stock market today: Dow slides 500 points, S&P 500 notches 4th day of losses as Nvidia earnings loom

Market Overview - US stocks retreated amid concerns about an AI bubble and the broader US economy, with significant earnings reports and jobs data on the horizon [1][3] - The Dow Jones Industrial Average fell approximately 1.1%, or nearly 500 points, while the Nasdaq Composite and S&P 500 declined by nearly 1.2% and roughly 0.8%, respectively [2] Company-Specific Insights - Nvidia's third-quarter results are anticipated, as investors reassess the sustainability of the AI-driven market rally; Nvidia's shares fell around 2.7% on Tuesday, contributing to a broader decline in Big Tech stocks [4] - Amazon and Microsoft also experienced declines of approximately 4.3% and 2.7%, respectively, reflecting the overall market sentiment [4] Economic Indicators - The upcoming September jobs report is crucial for shaping expectations regarding the Federal Reserve's policy moves, especially following the delay in official data releases due to the US shutdown [5] - ADP data indicated a slowdown in job losses in the private sector, while earnings reports from major retailers like Home Depot, Walmart, and Target are expected to provide insights into consumer strength ahead of the holiday season [6]