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Market Overview - The US stock market experienced a significant decline, with major bank executives expressing caution about high valuation risks, leading to investor concerns [3] - The S&P 500 and Nasdaq indices recorded their largest single-day drop since October 10, reflecting a shift towards cautious market sentiment after a surge driven by artificial intelligence [3] - The Dow Jones Industrial Average fell by 251.44 points, closing at 47085.24 points, a decrease of 0.53%; the S&P 500 dropped 80.42 points to 6771.55 points, down 1.17%; and the Nasdaq Composite Index decreased by 486.08 points to 23348.64 points, a decline of 2.04% [3] Sector Performance - Among the 11 major sectors in the S&P 500, 8 sectors declined, with the technology sector leading the drop at 2.3%, while the financial sector saw gains [3] - The Philadelphia Semiconductor Index fell by 4%, negatively impacting overall market performance [3] Individual Stock Movements - Major tech stocks mostly declined, with Microsoft down 0.52%, Amazon down 1.84%, Google A down 2.18%, Nvidia down 3.96%, Tesla down 5.15%, and Meta down 1.63%, while Apple saw a slight increase of 0.37% [3] - AMD's stock fell approximately 3% despite reporting slightly better-than-expected third-quarter revenue, as investors remained cautious about its capital expenditure growth [4] - Palantir Technologies dropped 8% despite providing a revenue forecast that exceeded expectations, and Uber's stock fell 5.1% due to quarterly profits falling short of market expectations [6] Cryptocurrency Market - Cryptocurrency assets faced significant pressure, with Ethereum dropping below $3100, a decline of 14%, and Bitcoin falling over 7%, nearing the $99,000 mark [5] - Related stocks also saw substantial declines, with Bakkt down nearly 20%, Galaxy Digital down over 10%, and Coinbase down nearly 7% [5] Economic and Policy Context - Executives from Morgan Stanley and Goldman Sachs expressed concerns about high stock market valuations and potential short-term adjustments, prompting investors to quickly avoid high-growth sectors [5] - Jamie Dimon, CEO of JPMorgan, warned of a significant market correction within the next six months to two years, citing geopolitical tensions and policy uncertainties as potential triggers [5] - Following a more hawkish signal from the Federal Reserve, uncertainty regarding policy direction has increased, exacerbating short-term market volatility [5]