What happened
The cost to insure CoreWeave's bonds has risen 150% from a year ago, and its stock at one point fell 28% this week. Oracle's $160 billion debt is rated just above junk status.
Why it matters
Rising insurance costs and a near-junk rating on Oracle's debt suggest investors are growing more cautious about the risks of AI infrastructure borrowing, a shift that could raise funding costs for these companies.
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The strain is showing up across the AI infrastructure debt market. CoreWeave, a cloud provider whose bonds are central to financing its operations, saw its stock fall 28% at one point this week and its bond insurance costs rise 150% from a year ago. Oracle, another major player in AI infrastructure, carries $160 billion in debt rated just above junk status, a signal that rating agencies see elevated risk. Even Microsoft, with its AAA rating, is not immune: its debt costs 25% more to insure than three months ago. Federal Reserve chair Kevin Warsh acknowledged the scale of AI's economic impact, calling it probably the most consequential change in his lifetime, but cautioned that the path forward is likely to be bumpy. The combination of rising insurance costs and near-junk ratings suggests investors are repricing the risk of financing the AI buildout, which could make it more expensive for companies to borrow for future projects.
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