技术分析师：6665点，标普500止跌的关键点位

Market Overview - The U.S. stock market has experienced significant volatility, with traders analyzing technical charts to identify potential support levels amid concerns over the return on billions of dollars invested in artificial intelligence [1] - The S&P 500 index fell to 6720 points, marking a two-week low, with the 50-day moving average at 6665 points identified as a critical support level [1] - A breach of the 6665 points could signal a "technical crack," while a rebound to 6748.10 points may reignite market risk appetite [1] Technical Analysis Insights - The next key level for technical analysts is the 6700-point mark, where a high volume of open options contracts may provide short-term support [2] - Morgan Stanley strategists highlight the 6740 to 6800 points range as significant technical levels, with a broader mid-term support at 6640 points [2] - Increased hedging activity has been noted, with the VIX index hovering around the critical level of 20, indicating heightened market volatility [2] Market Sentiment and Economic Indicators - The number of layoffs announced in October reached a 20-year high, driven by cost-cutting measures related to artificial intelligence, contributing to market uncertainty [1] - The seven major tech giants' stock price return index fell by 2%, marking the third decline in six trading days, reflecting investor concerns over unsustainable valuations [1] - The upcoming earnings report from Nvidia on November 19 is anticipated to be a potential market catalyst [2]