硅谷巨头6600亿美元押注AI，市场却越烧钱越恐慌

Core Viewpoint - The unprecedented AI investment plans by major US tech companies are reigniting market fears of a bubble, leading to significant stock sell-offs despite strong earnings reports [5][6]. Group 1: Investment Plans and Market Reactions - Amazon, Google, and Microsoft collectively lost $900 billion in market value after announcing their capital expenditure plans, which total $660 billion by 2026, a 60% increase from $410 billion in 2025 and 165% from $245 billion in 2024 [5][6]. - Amazon's capital expenditure for this year is projected to reach $200 billion, exceeding expectations by $50 billion, which has led to an 11% drop in its stock price [6]. - Microsoft experienced the most significant decline, with an 18% drop in stock price following its earnings report, despite a 26% increase in cloud revenue to $51.5 billion [6][7]. Group 2: Investor Sentiment and AI Return Cycles - The rising capital expenditures signal that realizing the full potential of AI may require more time and resources, testing investor confidence in long-term returns [8]. - Analysts express concerns that the increased capital spending indicates a longer timeline for AI strategies to yield attractive returns, leading to a pause in investor enthusiasm for tech stocks [8][14]. - The Nasdaq index has dropped 4% over the past five days, reflecting a shift in market sentiment towards tech stocks [8]. Group 3: Company-Specific Developments - Apple reported record quarterly revenue of $144 billion, benefiting from strong iPhone sales, while its capital expenditure decreased by 17% to $2.4 billion, contrasting sharply with its peers [10][11]. - Apple's collaboration with Google to enhance its AI capabilities through a pay-as-you-go model has allowed it to minimize capital expenditures while still gaining AI benefits [11][12]. - Nvidia, as the highest-valued public company, is expected to face a turbulent market when it announces its earnings, as investors seek signs that the high capital expenditures will soon translate into revenue growth [13].