AI概念股继续承压，美股三大指数集体收跌，热门中概股普跌

Market Performance - The Dow Jones index closed down 0.09% at 48,416.56 points, the S&P 500 index fell 0.16% to 6,816.51 points, and the Nasdaq index decreased by 0.59% to 23,057.41 points, influenced by declines in AI-related stocks such as Broadcom and Oracle, which dropped over 5% and 2% respectively [2] - Investors shifted focus to economically sensitive sectors like consumer discretionary and industrials, while heavily buying healthcare stocks [2] Analyst Insights - Aptus Capital Advisors' stock chief David Wagner noted a prevailing sentiment of aversion towards AI trades, but believes that the market will continue to be dominated by leading companies, referred to as the "Seven Giants," due to their underestimated operational leverage [3] - Wagner expressed that as long as revenue maintains growth, these companies will continue to expand profit margins and become high-return beneficiaries in the coming year [3] Economic Data and Market Outlook - Wagner is not overly concerned about the current market performance, describing the pullback as "healthy" and "normal," suggesting that there is still potential for upward movement despite the partial realization of the "Santa Claus rally" [4] - Upcoming economic data, including November non-farm payrolls and October retail sales, is expected to set the market tone, having been delayed due to the U.S. government shutdown [4] Stock Performance - Major tech stocks mostly declined, with Nvidia up 0.73%, Apple down 1.50%, Microsoft down 0.78%, Google down 0.35%, Amazon down 1.61%, Meta up 0.59%, and Tesla up 3.52% [5] - Chinese concept stocks saw a widespread decline, with the Nasdaq Golden Dragon China Index down 2.17%, Alibaba down 3.59%, JD down 2.00%, and Pinduoduo down 1.39% [5] Company News - Nasdaq has submitted a proposal to the SEC to extend trading hours from 16 hours to 23 hours on weekdays, aiming to implement a "23/5" trading model [6][7] - Nvidia announced the release of the Nemotron 3 series open-source models, which include Nano, Super, and Ultra versions featuring a hybrid Mamba-Transformer architecture [8] - Elon Musk's net worth surged to $677 billion, primarily due to the increased valuation of SpaceX, which reportedly reached $800 billion, doubling from $400 billion in August [9] - Strategy, a major Bitcoin holder, purchased 10,645 Bitcoins for $9.8 billion, raising its total holdings to 671,268 Bitcoins with an average purchase price of $74,972 [10] - Sanofi has expanded its collaboration with Dren Bio to jointly develop next-generation B-cell depletion therapies for various autoimmune diseases, with Dren Bio receiving an upfront payment of $100 million and potential future payments of up to $1.7 billion [11]