美股散户惨遭半年最大单日亏损！恐慌为何突然蔓延？

Core Viewpoint - The recent sell-off in the U.S. stock market, particularly affecting retail investors, is attributed to disappointing earnings from Palantir and concerns over high valuations in the AI sector, exacerbated by a notable decline in Bitcoin prices [2][3][5]. Group 1: Market Performance - The Retail Favorites Index, which tracks stocks heavily held by retail investors, experienced its largest drop since April, falling by 3.6%, significantly more than the S&P 500's decline [2]. - Despite a significant drop in stock prices on Tuesday, retail traders purchased $560 million worth of stocks and ETFs, briefly helping the market recover before it fell again [3]. - Palantir's stock, despite exceeding sales expectations and raising its annual outlook, dropped by 7.9% due to concerns over its high valuation and the sustainability of the AI boom [3][4]. Group 2: Influencing Factors - The sell-off was intensified by a well-known hedge fund manager's disclosure of short positions in Palantir and Nvidia, which raised alarms among investors [4]. - The decline in Bitcoin, which fell below $100,000 for the first time since June, negatively impacted related stocks and added pressure on retail investors [5]. - Market analysts suggest that while corporate earnings have been strong, the high expectations for tech companies could lead to disproportionate negative impacts if performance falls short [4].