AI Debt Boom Hits a Wall as Investors Demand More to Finance Big Tech’s Spending

Record borrowing by AI giants is pushing tech bond spreads higher as investors show signs of fatigue despite strong corporate balance sheets

The massive borrowing spree fueling the artificial intelligence boom is beginning to test the appetite of bond investors, with major buyers demanding higher yields as technology companies flood the market with debt.

Investors remain broadly comfortable with the financial strength of companies such as Amazon and Alphabet, but the sheer volume of new borrowing is forcing companies to offer increasingly attractive terms to get deals sold.

Neil Sutherland, head of U.S. fixed income at Schroders, said signs of "indigestion" are already emerging in technology credit markets.

The concern is not necessarily that major technology companies are becoming financially unstable. Instead, investors are questioning how much additional debt the market can absorb as spending on AI infrastructure continues to accelerate.

Tech companies face higher borrowing costs

Corporate bond spreads measure the additional yield investors demand compared with U.S. Treasury bonds. When spreads widen, investors are effectively demanding more compensation for taking on corporate debt.

Technology bond spreads have now reached 89 basis points, about 9 basis points above the broader investment-grade market, according to Karen Choi, a portfolio manager at Capital Group.

That marks a significant shift for a sector that has historically enjoyed some of the tightest spreads in corporate credit because of strong balance sheets and relatively low borrowing needs.

Amazon's recent $25 billion long-term bond sale offered investors roughly 120 basis points above comparable Treasuries, analysts said. That premium was about twice what the company would have paid for similar debt a year earlier.

"Tech has gone from trading materially through the market to actually trading wider than the market," Sutherland said.

The change reflects growing investor sensitivity to the enormous funding requirements of the AI race.

AI borrowing explodes

The scale of new borrowing has increased dramatically.

According to BNP Paribas data through August 10, AI hyperscalers have issued approximately $220 billion in debt so far in 2026, compared with just $12.5 billion during the comparable period last year.

That represents an increase of more than $200 billion in a single year.

Alphabet's bond offering earlier this month was reportedly well received, but still required an estimated 10- to 15-basis-point concession compared with the company's existing bonds.

George Catrambone, head of fixed income for the Americas at DWS, said investors are beginning to demand larger concessions as issuance reaches record levels.

Deals that were easily absorbed earlier in the year are now requiring higher yields to attract sufficient demand, suggesting that some traditional bond investors are becoming more cautious.

"The issuance in January versus August looks different," Catrambone said, adding that signs of fatigue are beginning to emerge.