CoreWeave bonds below 80 cents: the AI buildout's new constraint is credit

The strain in America's AI infrastructure buildout has moved from a single delayed data center to the financing that pays for the whole thing. Hyperscaler debt issuance reached $121 billion in 2025, four times the historical average, and Bank of America expects another $100 billion in 2026. That is the new development: the question is no longer how big the buildout is, but who is holding the debt behind it.

The repricing is already visible in specific instruments. CoreWeave's bonds have slipped below 80 cents on the dollar, with yields near 15%. Oracle's $18 billion Project Jupiter loans trade around 90 cents after permit delays and a credit downgrade to BBB-. Those are not abstract spreads. They are the cost of capital for companies that need to keep building.

The forecasts have not come down. Goldman Sachs Research projects about $1 trillion of AI-related investment globally in 2026, including $581 billion in the US. Columbia Business School professor Stijn Van Nieuwerburgh estimated cumulative AI infrastructure investment could reach $10.3 trillion by 2032, equal to 3.6% of annual US economic output over seven years. US hyperscalers are forecast to spend about $800 billion in capex this year.

Both things can be true at once. Spending plans keep climbing while the debt financing them gets more expensive. If that repricing continues, the binding constraint on AI expansion shifts from chip supply and power to credit markets. Higher financing costs would raise the burden on the companies carrying the debt, and the effects would not necessarily stay inside the AI sector.

The current picture is industry-wide: the plumbing, not the ambition, is where the strain shows first.

What remains unknown is how far spreads can widen before financing costs force buildout delays, which projects carry the most permit and construction risk, and how much of the projected 2026 investment depends on external debt rather than internal cash flow. The $10.3 trillion figure is a 2032 projection, not a current market value, and it assumes financing conditions that may no longer hold.