The market value of 8 giant U.S. stocks plummeted by over $800 billion in a single week.

Throughout the week, the market value of American companies closely related to the AI boom has evaporated by nearly $1 trillion. The total market value of the eight most valuable AI-related companies, including Nvidia, Meta, Palantir, and Oracle, shrank by over $800 billion in just one week. This situation has alerted market analysts, who are beginning to question the sustainability of the current high valuations. The Financial Times pointed out concerns about the overvaluation of Silicon Valley tech companies, which have emerged this week alongside signs of a weak US labor market and declining consumer confidence. The University of Michigan's Consumer Confidence Index fell to a three-year low in November. The historic government shutdown in the United States has resulted in crucial economic data being missing, causing investors to become increasingly worried that the labor market may have deteriorated significantly since the end of September. Mike Zigmont of Visdom Investment Group said, "Perhaps the risk of an economic downturn is spreading right under our noses."