AI issuers take 24% of US bond supply as yields spike

Global bond yields have climbed to multi-decade highs as a surge of AI-driven corporate debt issuance, layered on widening government deficits and sticky inflation, pushes traders to demand more compensation for holding long-duration debt.

"This is not just a low-income developing countries problem," Kristalina Georgieva, managing director of the International Monetary Fund, said. "High debt levels in advanced economies, combined with stubborn inflation, could lead to debt service costs going up for everybody."

The U.S. 30-year Treasury yield sits near two-decade highs, Germany's 10-year reached levels last seen in 2011 and Japan's 10-year touched 3 percent, its highest in three decades. France's 10-year hit its highest since 2008, and the UK's 30-year climbed to levels not seen since 1998. Goldman Sachs raised its 2026 U.S. dollar investment-grade issuance forecast to $2.3 trillion from $2.1 trillion, with AI-related issuers accounting for 24 percent of year-to-date volume.

The supply wave raises borrowing costs across the economy — the U.S. fixed 30-year mortgage rate has climbed to its highest since July 2025 — and threatens to erase hard-won market credibility in emerging economies, where the IMF estimated 60 percent of low-income countries were in debt distress or at high risk as recently as 2022.

AI Borrowers Reshape the Credit Market

Goldman Sachs now expects AI-driven bond issuance to push U.S. dollar investment-grade credit supply to $2.3 trillion in 2026, up from an earlier estimate of $2.1 trillion, and sees another $2.4 trillion in 2027. The bank lifted its net supply forecast to $1.0 trillion from $850 billion. Hyperscalers building data centers, chips and power infrastructure have turned to the bond market as the fastest way to raise capital without draining cash reserves, and the usual summer slowdown in issuance proved elusive this year.

The AI borrowing boom looks different across the Atlantic. In the United States, AI-linked companies now account for 24 percent of year-to-date investment-grade volume; in Europe, they make up just 6 percent. U.S. companies hold roughly $46 billion of outstanding bonds in the Eurozone, close to 10 percent of gross new euro issuance, and Amazon and Alphabet top the list of corporate issuers this year. A European Central Bank blog post warned that this concentration could push up interest rates for businesses well beyond the tech sector.

Deficits and Inflation Compound the Pressure

Government borrowing is adding to the supply glut. Yields have risen on sovereign debt in France, Germany, Italy, the UK, Japan, Canada and Australia as investors demand greater compensation for holding all that new debt. The yield spike — 61 basis points in the U.S. and 52 basis points in Germany, by Goldman's calculation — has directly offset a large share of U.S. corporate bond payouts and erased much of the interest-rate cushion that had supported European corporate debt.

The selloff has revived the bond vigilante narrative. Federal Reserve Governor Christopher Waller said the safety premium for Treasuries is gone, pushing the neutral rate higher. Georgieva said the progress emerging markets made in compressing spreads "could be erased by a lift in debt service costs, by the increase in yields globally by advanced economies."

With governments showing little appetite to rein in spending and tech companies pressing ahead with AI buildouts, the supply pressure shows no sign of easing. Goldman expects yields to ease somewhat but cautions they will likely stay below historical averages if current rate levels persist. The last time yields climbed this far this fast, in the 2022 Liz Truss episode in the UK, the bond market forced a change of government policy within weeks.

This article is for informational purposes only and does not constitute investment advice.