Bond Traders Fret Over $70B in AI Shadow Credit Backstops

The AI capex boom now runs on a plumbing system that lenders can only see in footnotes. According to Bloomberg, bond traders are worried about roughly $70 billion of "phantom liabilities" tied to the AI buildout: residual-value guarantees and credit support that let hyperscalers, chipmakers, and model labs raise cheap investment-grade debt without those obligations landing on their own balance sheets.

The template started with Meta. It backstopped a roughly $27 billion package to finance its Hyperion data center in rural Louisiana through a special-purpose vehicle called Beignet, then reused the structure in a roughly $13 billion deal for its Sopaipilla project in Texas. Broadcom applied the same idea to chips through Project Big Sky, backstopping most of a $35 billion debt raise led by Apollo and Blackstone that funds custom accelerators leased to Anthropic. Nvidia, meanwhile, unveiled memorandums with Apollo, BlackRock, Blackstone, Brookfield, Goldman Sachs and KKR to mobilize more than $500 billion of third-party capital, with CEO Jensen Huang saying Nvidia has the option to backstop up to 25% of the potential deals.

Analysts see both the design win and the hazard. CreditSights called Nvidia's residual-value support the equivalent of "writing a put" and warned the structure "is pro-cyclical and exacerbates boom-bust potential," cheap in the boom but most relevant in a severe, abrupt downturn. Bank of America has flagged that Broadcom's chip-financing vehicle could reach roughly $370 billion of senior debt by mid-2029 at a 20-gigawatt scale. DoubleLine portfolio manager Mariya Entina told Bloomberg the arrangements amount to "gaming the system," and TCW's Brian Gelfand said the tail risks are "elevated given the off-balance sheet nature."

For AI Weekly readers this sits alongside our tracking of Nvidia trimming its OpenAI Ohio data-center guarantee to under $120B, the same guarantee playbook getting visibly renegotiated in the open, and one of 183 Nvidia items we've logged in the last 90 days. Two numbers Bloomberg never puts a range on: how much of the $70 billion would actually be drawn in a stress scenario, and how Moody's and S&P Global would treat the guarantees on the sponsor side once a lessee defaults. If GPU demand stays strong, none of this bites and the sponsors look shrewd. If it wobbles, the same names now backstopping the boom become its first call for cash.