AI stock sell-off ramps up over debt-fueled data center spending fears: ‘Full-blown crisis of confidence'

• CoreWeave, an AI cloud provider, plummeted 25% over five days as concerns grow about its debt-heavy business model of buying computing power to rent out
• About one-third of AI capital expenditures come from debt, with AI-related debt issuance dropping from $113 billion in June to $23 billion in October
• Short-sellers betting against semiconductor stocks generated an estimated $32 billion in paper gains this week, while credit-default swaps price CoreWeave's default risk at over 50% within five years

AI Stock Sell-Off Intensifies on Infrastructure Spending Concerns

Tech and AI stocks experienced their worst week since July, with the Nasdaq falling 2.4% and S&P 500 declining 1.3% on Friday. The VanEck Semiconductor ETF dropped 3.3% for the day and over 10% for the week, reflecting mounting concerns about AI investment returns.

Key Players Affected:

CoreWeave, a major AI cloud provider, plummeted 13.5% Friday and 25% over five days. The company faces heightened risk due to its business model of purchasing expensive computing power to rent out. Anthropic's anticipated $2 trillion valuation is now being questioned, while TSMC reported its sixth consecutive quarter of record profits with 51% revenue growth.

Critical Data Points:

Gartner research reveals a troubling spending gap: AI providers are projected to spend $7 trillion on infrastructure through 2030 but generate only $3.6 trillion in revenue over the same period. Gartner predicts over 80% of "neoclouds" like CoreWeave will shut down within the decade. Credit-default swaps price CoreWeave's default odds above 50% within five years.

Market Implications:

Analysts describe the situation as a "full-blown crisis of confidence" driven by overvaluation concerns and intensifying Chinese competition. Approximately one-third of AI capital expenditure comes from debt financing, which is becoming harder to secure—AI-related debt issuance dropped from $113 billion in June to $23 billion in September.

Short-sellers betting against semiconductor stocks generated an estimated $32 billion in paper gains this week, while those targeting CoreWeave earned over $1 billion. The era of indiscriminate AI profits appears to be ending.