CoreWeave’s Financing Plans Test Appetite for AI High-Yield Bonds

CoreWeave’s financing plans are drawing attention to risks in AI-related high-yield debt as borrowing yields climb and investors weigh expected new debt supply over the next 18 months.

CoreWeave is exploring investment-grade borrowing to attract insurers. Its high-yield bond yield reached 15% this week, a level typically associated with distressed debt, while creditors have raised concerns about plans for additional large-scale borrowing. The company has said its financial position is sufficient to meet its debt obligations.

Some investors point to the amount of new debt expected over the next 18 months as the main concern, rather than a sudden deterioration in CoreWeave’s credit. Across the broader high-yield market, the average yield reached 8.41% Wednesday, its highest in 18 months. The risk premium also widened to its highest level since March.

A $5 billion leveraged loan for AI cloud startup Volta Infrastructure was reworked, and its final yield came in above the 11% banks initially discussed. Companies have issued $106 billion of investment-grade and high-yield project-finance bonds in U.S. dollar markets so far this year. Much of that financing is tied to data centers and other AI investments, and the total is nearly three times the $37 billion issued during all of 2025.

The $106 billion figure includes both investment-grade and high-yield debt, so it covers more than the high-yield market alone. Global project-finance bond issuance tied to these projects may exceed $300 billion next year. That projection covers global issuance for next year, while the $106 billion figure is a year-to-date total for U.S. dollar markets. Meanwhile, average prices for high-yield data-center bonds have fallen from $101 in June to nearly $95.

At current market levels, unsecured borrowing may be too expensive for large newer cloud-service providers to complete. New deals may need backing from assets or contract cash flows and stronger creditor protections. If high-yield bond financing becomes harder to secure, companies may turn to convertible bonds, equity, secured debt or securitization.