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# Tech Giants Hide Billions in AI Infrastructure Guarantees
- URL: https://adjacent.media/signals/tech-giants-hide-billions-in-ai-infrastructure-guarantees/
- Published: 2026-09-23T16:16:38.000Z
- Updated: 2026-09-23T16:16:38.000Z
- Description: Apple, Google, and Microsoft are underwriting massive debt for AI buildouts through financial guarantees that function as off-balance-sheet liabilities—a $300 billion exposure in under a year that regulators and investors largely cannot see.
- Author: Jonathan Greene
- Tags: #signal, theme-connected, infrastructure financing, data center expansion, capital allocation

Source: [Chartbook](https://open.substack.com/pub/adamtooze/p/big-tech-guarantees-gold-and-hong)

Apple, Google, and Microsoft are underwriting massive debt for AI buildouts through financial guarantees that function as off-balance-sheet liabilities—a $300 billion exposure in under a year that regulators and investors largely cannot see. This structure mirrors the pre-2008 financial crisis playbook where contingent liabilities created systemic risk. The concentration among four companies means a major AI capex correction could simultaneously crater multiple tech giants' credit ratings and destabilize the debt markets funding their expansion. The mechanism lets Big Tech defer acknowledgment of how capital-intensive their AI ambitions actually are while maintaining pristine balance sheets for investor optics.