AI debt and French bonds face credit stress as default-protection costs climb

Five-year credit default swap spreads for AI infrastructure borrowers CoreWeave, Oracle and SoftBank Group, and for France and Italy, have widened sharply this year, according to CNBC's analysis of FactSet data from Oct. 20-22. The moves signal rising investor anxiety over heavy borrowing, from the AI data-center buildout to strained government finances.

AI financing pressure

CoreWeave's five-year CDS spread reached 1,065.84 basis points on Oct. 21, one of the sharpest increases in default-protection costs. Oracle's spread rose to 308.25 basis points on Oct. 21 from 141 on Jan. 2. S&P Credit Ratings downgraded Oracle's debt to the lowest level of investment grade in July, citing credit risk from its expanding infrastructure business. SoftBank Group, a major AI investor with a large stake in OpenAI and an $87 billion commitment for data centers in France, saw its five-year spread near a four-year high of 432 basis points on Oct. 20, up from 284 on Jan. 5.

Nvidia CEO Jensen Huang told CNBC on Thursday that demand for neoclouds is “off the charts,” but he warned of a “scarcity of capital.” He said demand for capital is much greater than its availability and added that the issue would get solved.

France under scrutiny

France is not in a full debt crisis, but its five-year CDS spread reached 89.8 basis points on Oct. 21, up from 29.74 on Jan. 2, and has risen above Italy's. Italy's spread increased to 67.1 basis points on Oct. 22 from 28.33 on Jan. 2. Germany's spread rose to 12.15 basis points from 7.47 but remained far lower.

Thierry Wizman, global FX and rates strategist at Macquarie Group, told CNBC that the key drivers are France's large sovereign debt, at 120% of GDP, and the inability to reduce the deficit. German government debt is 65% of GDP. The spread between French and German 10-year bonds has climbed to 1.6 percentage points, and France's 10-year yield topped 5% for the first time since 2002.

Recent mass protests and rioting in France have heightened market concerns, the report said. Moody's is scheduled to review France's Aa3 sovereign rating, which has a negative outlook, on Oct. 23.

FedWatch Advisors CIO and founder Ben Emons wrote on his “French Neoclouds” Substack that markets “may no longer want to underwrite massive capex, heavy leverage, and uncertain future cash flows,” and that the same shift is widening French sovereign spreads.

Broader credit markets are also pricing higher costs. S&P Global warned on Oct. 19 that major cloud providers may have more AI-linked debt exposure than publicly recognized. The North America CDX High Yield index's five-year midpoint spread reached 355.35 basis points on Oct. 20, up about 39 basis points from the end of 2025, according to LSEG.

Source: CNBC.