美股单日蒸发 3.2 万亿美元，AI 芯片股因数据中心政策担忧大跌
Wall Street erased $3.2 tn in market value on Thursday, Nov-5.
11 月 5 日美股单日蒸发 3.2 万亿美元市值，纳斯达克综合指数下跌 5.52%，为 2025 年 4 月以来最差单日表现，投资者抛售 AI 芯片股。市场担忧民主党掌控国会将放缓高杠杆的 AI 支出热潮，高盛称短期暂停令可能影响约 45% 的规划中美国数据中心容量。英伟达下跌 9.3%，费城半导体指数下跌 12.3%，SanDisk 跌 22%，Micron、Western Digital 和 AMD 各跌 17%。
推荐理由
AI 评分 82
原文把数据中心审批受阻与芯片股大跌串成一条传导链，读者可据此理解 AI 基建投资对政策变化的敏感度。
主题
查看原帖《华尔街日报》：民主党赢得众议院、参议院和关键州长职位后，美国拟新增的AI数据中心中有一半可能面临更严格的当地审查。 曾是建设者安全港湾的得克萨斯州和俄亥俄州，可能会暂停施工，直到居民在供水和电价方面获得保证。 Meta总裁迪娜·鲍威尔·麦考密克表示，如今每家超大规模云服务商都在考虑在美国境外建设。 OpenAI在数日内作出回应，承诺在数据中心交易中避免签署保密协议，并确保居民不必为项目的电力买单。 预计国会民主党人将利用听证会和传票来调查AI安全事件。 预计将出任参议院银行委员会主席的参议员伊丽莎白·沃伦曾寻求就英伟达对华芯片销售问题与该公司CEO黄仁勋举行听证会，但后者拒绝了；而她一旦执掌该委员会，将拥有传票权。
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WSJ: Half of proposed US AI data center additions could face tougher local scrutiny after Democrats won the House, Senate and key governorships. Texas and Ohio, once safe harbors for builders, could halt construction until residents get assurances on water supplies and electricity prices. Meta President Dina Powell McCormick said every hyperscaler is now considering building outside the US. OpenAI answered within days by committing to avoid nondisclosure agreements in data center deals and to keep residents from paying for the projects’ electricity. Congressional Democrats are expected to use hearings and subpoenas to probe AI safety incidents. Senator Elizabeth Warren, expected to chair Senate Banking, has sought a hearing with Nvidia CEO Jensen Huang over China chip sales, which he declined, and her gavel would bring subpoena power.
正文
Wall Street erased $3.2 tn in market value on Thursday, Nov-5. The Nasdaq Composite fell 5.52%, its worst day since April 2025, as investors dumped AI chip stocks.
The market collapse stemmed from investor panic that a Democrat-controlled Congress will fundamentally slow down the highly leveraged AI spending boom.
Goldman Sachs says short-term moratoria could affect about 45% of planned US data centre capacity.
Midterm losses for data centres hit CoreWeave and other debt-funded GPU renters hardest.
Fewer new data centers means fewer orders for the GPUs and memory that fill them, so chipmakers took the worst hit.
Nvidia sank 9.3%, erasing its 2026 gains, and the Philadelphia Semiconductor index fell 12.3%, its worst day in about 6.5 years.
SanDisk fell 22%, and Micron, Western Digital and AMD each lost 17%.
Even Meta President Dina Powell McCormick said building data centers is “going to be harder” after the elections.