An Unprecedented Borrowing Binge
The biggest names in technology—companies like Amazon, Alphabet, Microsoft, and Meta—are in the midst of a historic borrowing spree. These giants, once famous for their massive cash reserves, are now turning to the corporate bond market to raise hundreds
of billions of dollars. In 2026 alone, AI-related bond issuance is projected to reach between $350 billion and $400 billion. This figure is more than double the amount from the previous year and represents a seismic shift in how the tech industry finances its growth. Amazon, for instance, has tapped the bond market for over $100 billion in the last year, including a recent $25 billion sale, to fuel its expansion.
The AI Arms Race Needs Capital
The driving force behind this debt is the astronomical cost of the AI arms race. Building the infrastructure to power advanced AI models requires immense capital expenditures. Companies are pouring money into constructing sprawling data centers, securing massive amounts of electricity, and buying fleets of high-end semiconductor chips. The cumulative investment needed for AI infrastructure over the coming years is estimated to be in the trillions. While these tech titans remain incredibly profitable, the sheer scale and speed of investment required to stay competitive in AI now exceeds what even their enormous cash flows can cover, pushing them to rely on debt.
A New Kind of Risk for Bond Investors
For bond investors, this wave of new debt introduces several layers of risk. The first is execution risk: there is no guarantee that these colossal AI investments will pay off in a way that allows companies to easily service their new debt. While credit rating agencies currently see little risk of downgrades for the biggest players, the long-term return on AI is still uncertain. The market is already showing some signs of strain, with investors demanding higher yields (or spreads) for some of these new bonds, a signal of rising caution. One analyst noted a recent Amazon bond sale received a "notably cool reception," suggesting the market's appetite may have its limits.
The Danger of Concentration
Perhaps the most significant new risk for the average investor is concentration. As tech companies issue more bonds, their debt makes up an increasingly large portion of corporate bond indices. AI-related debt now reportedly accounts for around 15% of the entire US corporate bond market. This means that even investors who own diversified bond funds are becoming more exposed to the fortunes of a handful of tech companies. This trend mirrors what has happened in the stock market with the 'Magnificent Seven,' where a small number of stocks drive a large part of the index's performance. In the bond world, this new concentration means portfolios are more correlated to the tech sector, potentially reducing the diversification benefits that bonds are supposed to provide.
