To fund record AI spending, tech giants are flooding global bond markets. Bankers warn this aggressive debt-fueled expansion signals a looming bubble.
The AI investment boom has hit a structural wall: the U.S. bond market can no longer absorb the sheer volume of debt technology giants need to fund their infrastructure. As capital expenditures for hyperscalers like Amazon and Alphabet soar toward an estimated $725 billion this year, i.e., nearly double 2025 levels, these companies have officially exhausted their internal cash flows.
To keep the AI engine running, bankers now aggressively push debt into international markets.
Tech titans have issued $60 billion in bonds over the last 12 months to bypass the US market saturation- by diversifying into euros, sterling, yen, and Canadian dollars. Amazon recently executed the largest-ever euro corporate bond deal, while Alphabet set borrowing records across multiple global currencies.
This frantic expansion signals a dangerous inflection point.
Financial institutions now warn that AI-fueled spending exhibits classic bubble characteristics. The Bank for International Settlements (BIS) recently highlighted the risks of opaque financing and circular investment structures, drawing uncomfortable parallels to the dotcom crash and the 1840s railway mania.
Hyperscalers currently prioritize speed over stability, funding massive data centers and chip stockpiles with debt that assumes exponential revenue growth.
If “AI exuberance” reverses, many borrowers across the supply chain will struggle to service this mounting debt. We are witnessing a historic scale of capital deployment, but the reliance on ever-more creative financing to sustain the momentum suggests a system operating on thin margins.
The market currently bets on a seamless AI future, but as banks scramble to find buyers for these colossal debt volumes, the cracks in the global balance sheet broaden.
