受人工智能企业估值过高担忧影响，投资者纷纷撤离市场，美股本周迎来三周来首次周度下跌。其中，紧密跟 踪大型科技股的纳斯达克综合指数本周累计下跌3%，创下四月以来的最差表现；标普500指数本周下跌1.6%， 也结束了连续三周的涨势。 本轮美股市场下挫主要受人工智能概念股拖累。本周，AI龙头英伟达单周跌幅超过7%，市值蒸发3485亿美 元；微软跌幅也超过4%，市值蒸发超1500亿美元；甲骨文跌幅接近8%，市值损失660多亿美元；其他AI概念 股方面，Palantir跌超11%，博通跌超5%，Meta跌超4%，谷歌跌0.84%，亚马逊则微涨0.08%。 科技股，波动加剧！ 美股科技股本周"高台跳水"，以科技股为主的纳斯达克指数单周跌幅超过3%，为4月以来表现最糟糕的一周。 8家与人工智能密切相关的头部公司总市值单周蒸发超8000亿美元（约合人民币5.7万亿元）。而整个美股市 场，与AI相关的美国公司市值损失近1万亿美元。其中，仅英伟达一家公司就蒸发近3500亿美元。 此轮科技股抛售始于政府承包商兼AI开发商Palantir几天前发布财报后。市场对该公司估值过高的担忧引发该 股连续暴跌，并波及同业。有分析指出，人工智能 ...

Market Performance - The top eight AI-linked states in the United States have lost $1.2 trillion in stock valuation since last Friday, marking the worst week in market performance since April [1] - The broader tech sector has seen significant declines, with the Nasdaq Composite falling 1.8% on Friday and heading for a weekly loss of 5.5%, the sharpest setback since April [7] Consumer Sentiment - The University of Michigan Index reports a consumer sentiment index at a new low of 52.3, down by 6.3 points, indicating a three-year low in economic confidence [2] - November's sentiment for the economy is at 50.3, the worst since July 2022, down from 53.6 in October [2] Company-Specific Impacts - Nvidia's shares dipped by 3% on Friday, a month after reaching a $5 trillion valuation, while Oracle saw a 4% decline on the same day [3][6] - Rightmove experienced a dramatic 28% plunge in shares after announcing future AI investments, recovering slightly but still down 12.8% by market close [4] - Microsoft shares fell by 0.5%, extending a losing streak that could become the longest in 14 years, with an 8.6% drop over the past eight trading sessions, wiping approximately $350 billion from its market capitalization [6] Industry Concerns - Reports from MIT indicate that many AI startups and established companies are showing zero returns and running losses, raising doubts about the sustainability of funding in the AI sector [8][9] - Major tech companies, including Tesla, Amazon, Alphabet, and Apple, also faced significant stock value declines amid concerns of an AI bubble [12]

Core Viewpoint - Tech stocks experienced significant pressure, leading to declines in major indices, particularly the Nasdaq Composite Index, despite positive comments from President Trump regarding AI [1] Group 1: Market Performance - Shares of major tech companies such as Amazon, Alphabet, and Nvidia saw declines, contributing to the overall downturn in equity markets [1] - The Nasdaq Composite Index was notably affected by the downturn in tech stocks [1] Group 2: Market Sentiment - Recent market activity indicates that equity markets have encountered resistance after reaching record highs, raising concerns about potential overvaluation [1]

整理 ｜ 高凡乔 来源｜ 未来人类 实验 室 （ID：LabforAI） 封面来源 ｜ IC photo 小鹏直播展示人形机器人IRON内部结构打破谣言 近日，小鹏公司在科技日活动上展示了其研发的新一代人形机器人IRON，引发广泛关注。针对网上关于IRON是否为真人伪装的 质疑，何小鹏在直播中剪开机器人外衣，展示了其内部的金属骨架和液压管等机械结构回应质疑。IRON机器人具有高度仿生设 计，搭载图灵AI芯片和全固态电池技术，并具备实时环境感知能力，展现了小鹏在人工智能与机器人技术领域的创新能力。（IT 之家） Kimi K2 Thinking开源模型发布，显著提升AI思考与解决问题能力 小鹏直播展示人形机器人IRON内部结构打破谣言 美团正式上线AI大模型LongCat官方App 亚马逊推出Kindle Translate AI翻译服务一键翻译作者书籍 微软组建超级智能团队自研AI模型 马斯克获准史无前例的"万亿薪酬"方案 月之暗面近日发布了其迄今能力最强的开源思考模型——Kimi K2 Thinking。该模型基于"模型即Agent"理念训练，掌握"边思 考，边使用工具"的能力。在多项基准测试中表现优异，包 ...

机器之心报道 LLM在持续学习方面有了新突破。 近日，谷歌推出了一种 全新的用于持续学习的机器学习范式 —— 嵌套学习， 模型不再采用静态的训练周期，而是以不同的更新速度在嵌套层中进行学习，即将 模型视为一系列嵌套问题的堆叠，使其能够不断学习新技能，同时又不会遗忘旧技能。 机器之心编辑部 而这或将标志着人工智能朝着「真正像大脑一样进化的方向」迈出了一大步。 这种方法一经发布，便引起网友的热议，不少网友表示， 「这很令人兴奋，是迈向真正自适应、自我改进智能的重要一步。」 下面来详细了解一下。 在谷歌看来，过去十年，得益于强大的神经网络结构和高效的训练算法，机器学习（ML）领域取得了令人惊叹的进展，可尽管大语言模型（LLMs）取得了巨大 成功，一些根本性问题仍然存在，尤其是 「持续学习（Continual Learning）」—— 即模型能否在不遗忘旧知识的前提下，不断学习新知识与技能。 在人类学习和自我改进方面，人脑是最完美的范例， 它依靠神经可塑性（neuroplasticity）不断调整结构，以适应新的经验、记忆与学习。缺乏这种能力的人，就 会像患有前向性遗忘症（anterograde amnesia）一样 ...

近期多项经济指标释放出谨慎信号。密歇根大学公布的11月消费者信心指数跌至三年来新低，劳动力市 场招聘活动亦显疲态，芝加哥联储数据显示招聘率已连续六个月下滑。与此同时，亚马逊、塔吉特等大 型企业相继宣布裁员计划，进一步加剧市场对经济前景的忧虑。在此背景下，投资者风险偏好明显下 降，曾被视为"确定性增长"的AI概念股首当其冲。 值得注意的是，AI领域的投资规模正以惊人速度扩张。仅在最近一个季度，微软、亚马逊、Meta和 Alphabet四家科技巨头的资本支出总额就高达1120亿美元。行业整体亦通过大规模发债为AI基础设施建 设融资。对此，隆奥投资管理公司（Lombard Odier Investment Managers）宏观研究主管弗洛里安·耶尔 波（Florian Ielpo）警示："与AI相关的资本支出数额庞大，且越来越多地依赖债务融资，这种情形令人 联想到2000年科技泡沫时期那种盲目投资的热潮。" 【CNMO科技消息】据《金融时报》报道，过去一周，美国人工智能相关科技股经历剧烈调整，市场情 绪显著降温。自上周五以来，与AI热潮紧密关联的八家头部企业——英伟达、微软、亚马逊、谷歌母 公司Alphabet、 ...

Core Insights - The article discusses the perspective of JR Research on the AI bubble and investment opportunities, emphasizing a focus on growth investing with a robust risk/reward profile [1] Group 1: Investment Strategy - JR Research is recognized as a Top Analyst by TipRanks and Seeking Alpha, specializing in Technology, Software, and Internet sectors, as well as Growth and GARP [1] - The investment approach combines price action analysis with fundamental investing, aiming to identify growth opportunities with significant upside potential [1] - The investing group Ultimate Growth Investing targets high-potential opportunities across various sectors, focusing on stocks with strong growth potential and attractive valuations [1] Group 2: Performance and Outlook - JR Research has demonstrated outperformance with his stock picks, aiming for alpha generation well above the S&P 500 [1] - The investment thesis typically has an 18 to 24 month outlook for realization, focusing on beaten-down stocks with recovery potential [1] - The group is designed for investors looking to capitalize on growth stocks with strong fundamentals and buying momentum [1]

Skip to Main Content Skip to Search This copy is for your personal, non-commercial use only. Distribution and use of this material are governed by our Subscriber Agreement and by copyright law. For non-personal use or to order multiple copies, please contact Dow Jones Reprints at 1-800-843-0008 or visit www.djreprints.com. Free-Spending Big Tech Dominates Earnings. As for the Rest: Don't Miss. By Jack Hough Nov 07, 2025, 3:22 pm EST Share Resize Reprints MSFT AMZN GOOGL Winnebago Industries bounced 29% afte ...

Who's winning the PR war in the Disney-YouTube TV standoff? Data suggests YouTube — so far. Disney's channels have been unavailable on YouTube TV since October 30 due to a contract dispute, preventing YouTube TV subscribers from watching the "Monday Night Football," as well as ABC News and popular shows like "Abbott Elementary."Several data sources indicate that YouTube could have the upper hand in public perception. A survey by Drive Research of 1,100 respondents showed that 58% consider both parties equ ...

Meta Platforms announced on Friday that it will invest $600 billion in U.S. infrastructure and jobs over the next three years, mainly to build artificial intelligence (AI) data centers. The company said this massive investment will help power its AI ambitions, as it races to build the infrastructure needed for advanced computing. Meta is strongly focused on achieving superintelligence — a stage where machines could outthink humans. CEO Mark Zuckerberg told U.S. President Donald Trump said during a White Ho ...