Nvidia's market capitalization has fallen by $1 trillion, with the decline occurring over a period of less than two months. The drop has brought the company's valuation back to pre-AI boom levels, with its stock price and price-to-earnings ratio also decreasing. The extent of the impact on the broader tech industry is unclear, with some reports suggesting a $1 trillion wipeout for Big Tech and others indicating a $1.3 trillion loss in stock market value for the chip industry.