US tech giants' off-balance-sheet AI debt surged about 90% over six months to roughly USD 3.2tln across five major companies, according to Nikkei data compilation

US tech giants' off-balance-sheet AI debt surged about 90% over six months to roughly USD 3.2tln across five major companies, according to Nikkei data compilation.

Large-scale investment programmes funded through joint ventures, special purpose vehicles and lease-like structures rather than on-balance-sheet borrowing have a long history in capital-intensive sectors, and the pattern has been consistent: the debt is real even when it sits outside the parent, and rating agencies and equity holders eventually re-consolidate it analytically once scale makes it material. The mechanism to watch is not the headline total but where the obligations sit: hyperscaler capex funded through SPVs shifts credit exposure into project debt and private credit channels, which prices in spreads there rather than in the parents' own bonds until recourse or guarantees tie it back. Comparable episodes in telecom build-outs and pre-crisis structured finance show that off-balance-sheet treatment tends to compress the perceived leverage of the sponsors until a stress event or an accounting change forces re-rating; equity multiples and CDS on the named companies are the usual first repricing point. The relevant tells are agency commentary on the sponsor credits, disclosure detail in upcoming filings on commitments and guarantees, and whether the financing migrates toward or away from parent recourse. As a compiled estimate rather than a disclosed figure, the number itself is less actionable than the direction of the funding mix.