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Top hyperscalers likely to have more AI-linked debt than now known, S&P Global warns

By Thomson Reuters Oct 19, 2026 | 11:17 AM

By Marc Jones

LONDON, Oct 19 (Reuters) – S&P Global estimates the world’s biggest tech firms are likely to have more AI-linked liabilities than currently known, although its top analyst for the sector sees no need to ​change any ratings at present.

Debt issued by AI infrastructure providers and so-called ‘neocloud’ ‌firms such as Nvidia-backed CoreWeave has sunk to increasingly stressed levels in recent weeks amid concerns about the aggressive scale of their borrowing.

S&P’s Global Head for Digital Infrastructure Mark Habib said the biggest risk to hyperscalers’ ratings remained whether expected profits fail to materialise.

But he also highlighted so-called ‘interconnected ‌financing ​structures’, where hyperscalers effectively guarantee huge data centre builds, ⁠or smaller AI companies.

“It is ⁠safe to assume that there is more (debt) out there that we are not seeing,” Habib said during a roundtable in London.

“If it’s not reported, then it’s not part of the disclosure by the hyperscalers. Also, if we are ​not rating the transactions where this liability may accrue, then the fact of the matter is that we might not have the visibility.”

S&P expects the top ⁠six US hyperscalers — Amazon, Microsoft, Alphabet, Oracle, Meta, ⁠and SpaceX — to spend more than $7 trillion on data centers and ​other AI-related capex between 2025 and 2030, and have negative free cash flow until ​at least next year.

Habib said there wasn’t an estimate of how ‌much additional debt the circular financing might add to firms’ balance sheets, although he said S&P was trying to take a “holistic” view overall.

Back in July, it downgraded Oracle to BBB-, the lowest rung of ‘investment grade’, on concerns about its AI spending and ⁠what it called “an uncertain path to profitability”.

Habib was also asked whether the recent market selloff of bonds linked to the aggressive AI buildout was a sign that investors see ⁠them as riskier than ‌ratings indicate.

“For now, we don’t have the view that there ⁠is a major disconnect that needs to force our ratings ​to ‌change at this point,” he said, saying S&P’s scores were ​designed to ⁠take a longer-term view.

He said what could change that view was if it became clear the amount of money being spent was no longer sustainable.

“And that could come from a variety of drivers,” Habib said. “Further increases in the investments (by AI firms), or a view that the revenue rate of competition is getting too intense.”

(Reporting by Marc Jones; ​Editing by Jan Harvey)