亚马逊与英特尔最新发布的业绩报告加深了投资者对人工智能巨额投入回报率的疑虑，导致美国股市出现剧烈震荡 123。纳斯达克综合指数周五暴跌超过3%，创下自六月以来最差单日表现 910。受此影响，以科技股为主的纳斯达克市场在一周内市值蒸发近1万亿美元，一个月内累计蒸发约2万亿美元 10。尽管科技板块领跌，标普500和道琼斯工业平均指数也同步走低，但跌幅相对较小，整体市场仍获得一定支撑 46910。此次抛售不仅波及美股，还导致亚洲股市承压，并推高了债券市场的避险需求 2。
作为本次下跌的核心驱动因素之一，英特尔因预警个人电脑（PC）市场疲软及增加AI支出，股价在盘前交易中一度暴跌25%至30% 25。该公司首席财务官David Zinsner表示：“展望未来，我们看到PC放缓至少将持续到明年上半年。” 57 分析师指出，英特尔预计将因此损失超过1300亿美元的市值 57。与此同时，亚马逊股价在财报发布后下跌6%至7%，其过去三个月内的支出增加了六倍，进一步加剧了市场对科技巨头“成长阵痛”的担忧 257。FHN Financial分析师Chris Low评论称，科技公司正在激进推进AI建设的过程中展现出显著的成长痛苦 57。
除上述两家公司外，其他科技巨头同样遭受重创。谷歌母公司Alphabet周四遭遇史上最大单日跌幅，市值蒸发逾5000亿美元，原因被归结为AI摘要功能对其核心搜索广告收入的冲击 157。该股票周五早盘继续下跌1% 5。Reddit股价因日活用户数据弱于预期且受到Google AI搜索引流减少的影响而下跌26%，Roblox则因日活跃用户数下降导致股价下挫近20% 57。此外，币安（Binance）遭受黑客攻击扰乱了加密货币市场，但这并非美股科技板块大跌的主要成因 4。
US technology stocks faced a sharp sell-off after earnings reports from Amazon and Intel deepened investor concerns regarding the return on massive artificial intelligence expenditures 13. Nasdaq-100 futures dropped by 2% as Intel shares plunged 25% in premarket trading and Amazon fell 7% 2. The broader market reaction saw the Nasdaq composite index decline by more than 2%, with some sources reporting a drop of nearly 3% or exactly 3%, marking its worst single-day performance since June 4689. Consequently, approximately $1 trillion in value was wiped out from tech stocks, a figure some analysts described as potentially exceeding that amount 38. While the S&P 500 and Dow Jones Industrial Average also declined, their losses were less severe than those in the tech sector, with the S&P 500 falling over 1% 4910.
The financial downturn was driven by specific disappointments in corporate results and guidance. Intel’s stock fell up to 30% during the session, erasing more than $130 billion in market capitalization, after the company warned that the PC market slowdown would persist at least through the first half of next year 57. Chief Financial Officer David Zinsner stated, "Looking ahead, we see the PC slowdown continuing at least through the first half of next year" 57. Amazon’s shares declined after its profits missed investor expectations and spending increased sixfold over the past three months 57. Reddit and Roblox also suffered significant losses, with shares dropping 26% and nearly 20% respectively, due to weak user data 57. This volatility extended beyond these firms, contributing to a weekly loss of nearly $1 trillion for the Nasdaq and a monthly loss of about $2 trillion 10.
Market sentiment turned increasingly cautious regarding the sustainability of the current AI boom, with fears of an "AI bubble" emerging alongside questions about the profitability of heavy infrastructure investments 36. Alphabet, Google’s parent company, experienced its largest one-day market value drop in history, losing approximately $500 billion in value earlier in the week before continuing to fall 1% on Friday morning 157. The decline in Alphabet's value was partly attributed to concerns that AI summaries could impact its core search advertising revenue 7. Chris Low, an analyst at FHN Financial, noted that tech giants are displaying "some pretty significant growing pains as they aggressively pursue the AI build-out" 57. Amidst the equity selloff, demand for bonds rose as investors sought safety, while oil prices increased 26.
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