AI Debt Boom Tests Investor Appetite

The surge in debt issuance by technology giants to finance the artificial-intelligence buildout is beginning to test investor appetite, with bond buyers demanding higher yields as the market absorbs record supply. While investors remain confident in the credit quality of companies such as Amazon and Alphabet, widening technology-sector bond spreads suggest growing pressure on pricing.

AI hyperscalers have issued about $220 billion in debt in 2026, compared with just $12.5 billion during the comparable period last year, according to BNP Paribas data. Amazon’s recent $25 billion long-dated bond sale priced at around 120 basis points over U.S. Treasuries, roughly twice the spread seen last year. Alphabet’s latest offering also required a concession of around 10 to 15 basis points to attract buyers.

Investors say the situation is not yet alarming, given the strong ratings and cash flows of major technology companies. However, pension funds and insurers face portfolio limits on individual issuers, raising concerns if the same companies continue borrowing heavily. With AI spending showing little sign of slowing, analysts warn that repeated bond sales could require increasingly larger concessions and wider spreads, potentially limiting how much debt the market is willing to absorb.

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