How the AI Sell-Off Reveals the Real Drivers of Rising US Treasury Yields

The recent rise in long-term US Treasury yields has raised questions about what is driving borrowing costs higher. While some analysts attribute the increase to debt issuance by major technology companies investing in artificial intelligence infrastructure, others believe growing government debt and fiscal concerns are playing a much bigger role.

The latest AI sell-off offers an opportunity to examine these competing explanations. If investment in AI infrastructure has been a major driver of rising long-term yields, concerns about the sector should arguably have pushed yields lower. However, according to the market analysis presented here, the recent sell-off had virtually no impact on Treasury yields.

This supports the argument that growing fiscal pressures, rather than AI-related corporate borrowing, may be a more significant factor behind the increase in long-term yields.

Why Are US Treasury Yields Rising?

Long-term US Treasury yields have climbed into territory not seen before the global financial crisis. However, the reasons behind this increase remain a subject of debate.

Two main explanations have emerged.

The Fiscal Risk Premium Argument

One explanation is that investors are demanding a higher return to compensate for growing fiscal risks in the United States.

As public debt continues to expand, concerns about the government’s long-term financial position may increase. This can contribute to a higher fiscal risk premium, pushing Treasury yields upward.

Under this interpretation, the rise in long-term yields reflects mounting concerns about government borrowing and the sustainability of public finances.

Is Hyperscaler Debt Issuance Driving Bond Yields Higher?

Another explanation focuses on major technology companies, particularly hyperscalers investing heavily in AI infrastructure and data centers.

These companies have increasingly turned to debt issuance to finance their expansion. Some analysts argue that this additional corporate borrowing is contributing to higher long-term interest rates.

However, the analysis challenges this explanation by examining corporate dissaving, the macroeconomic measure through which hyperscaler debt issuance is reflected.

According to the author, corporate dissaving remains nowhere near the levels seen during the IT bubble of the early 2000s. By contrast, public dissaving appears unusually large compared with historical levels.

This suggests that government finances may be a more important driver of rising Treasury yields than corporate borrowing linked to AI investment.

The AI Sell-Off as a Natural Experiment

The recent sell-off in AI-related assets provides an opportunity to test whether the AI investment boom has been materially influencing long-term Treasury yields.

If AI infrastructure spending were a major factor behind rising yields, concerns about the sector could be expected to produce a decline in long-term borrowing costs.

This week’s market developments offered a chance to observe that relationship.

Why AI Market Weakness Matters for Treasury Yields

Concerns about tighter data center permitting requirements and additional regulations have put pressure on the AI investment narrative.

If the expansion of AI infrastructure were a central driver of US economic growth and rising bond yields, a reassessment of that investment outlook might have been expected to affect Treasury markets.

The key question is whether yields responded to the AI sell-off in the way that this explanation would predict.

What Happened to Treasury Yields During the AI Sell-Off?

According to the analysis, the recent AI sell-off had essentially no impact on Treasury yields.

The author argues that this lack of a meaningful response weakens the view that AI investment has been a major force behind the increase in long-term yields.

Instead, the market behavior lends further support to the fiscal risk premium explanation, in which rising public debt and government borrowing pressures are more important factors.

Payroll Surprises and the Two-Year Treasury Yield

The analysis also examines how Treasury yields respond to economic data, using payroll surprises and the two-year Treasury yield.

The purpose is to assess whether the market’s reaction to stronger-than-expected employment data is consistent with the idea that US economic growth depends heavily on AI investment.

How Payroll Surprises Are Measured

The analysis compares actual payroll figures with the Bloomberg consensus forecast.

The difference between the reported number and the expected figure is then measured against the historical standard deviation of payroll surprises. This provides a standardized measure of how significant the data surprise is.

For the latest employment report discussed in the analysis:

Indicator	Figure
Bloomberg payrolls consensus	70,000
Actual payrolls	165,000
Upside surprise	95,000
Historical standard deviation	76,000
Standardized surprise	1.2 standard deviations
Increase in two-year Treasury yield	5 basis points

The 95,000 upside surprise represented approximately 1.2 standard deviations above the historical average surprise.

What the Latest Payroll Data Revealed

Following the stronger-than-expected payroll report, the two-year Treasury yield increased by five basis points.

The analysis compares this market reaction with a black regression line representing the average historical response of yields to payroll surprises.

According to the author, the observed increase in the two-year yield was greater than would be expected if AI were playing such a dominant role in the US growth outlook.

Under the argument that US growth depends critically on AI, the author suggests that the observed point might have been expected to fall below the historical regression line.

Instead, the reaction provides another reason to question the idea that AI investment is the main force behind rising Treasury yields.

What the Two-Year, Ten-Year and 10y10y Forward Yields Show

A second part of the analysis examines daily Treasury yield movements from the beginning of 2026.

The chart tracks three different measures:

• The two-year US Treasury yield, shown by the black line.
• The ten-year US Treasury yield, shown by the blue line.
• The 10y10y forward yield, shown by the purple line.

Together, these indicators provide different perspectives on short-term and longer-term interest rate expectations.

Two-Year Treasury Yield

The two-year Treasury yield is one of the indicators used to examine the market’s reaction to economic developments.

In this analysis, it is particularly relevant because the author compares its movement with the latest payroll surprise.

Ten-Year Treasury Yield

The ten-year Treasury yield provides a longer-term measure of borrowing costs in the US government bond market.

Its movement is important to the broader discussion about why long-term yields have increased and whether fiscal concerns are contributing to that trend.

The 10y10y Forward Yield

The 10y10y forward yield represents the implied forward yield for a ten-year period beginning ten years from now.

It provides a perspective on longer-term interest rate expectations and is used in the analysis to assess whether the AI sell-off changed the market’s longer-term outlook.

Why the 10y10y Forward Yield Did Not Fall

The author argues that if the AI investment boom had been a material driver of rising long-term yields, the 10y10y forward yield should have declined during the recent sell-off.

However, the purple line did not fall alongside the other yield measures in the way the author expected.

For the analysis, this is an important observation. The lack of a meaningful decline in the forward yield further challenges the argument that AI-related investment has been responsible for much of the increase in long-term Treasury yields.

Instead, the author sees this market behavior as additional evidence supporting the fiscal risk premium explanation.

US Fiscal Risk and the Growing Public Debt Burden

The central argument is that rising US Treasury yields are more closely connected to mounting fiscal pressures than to borrowing by major technology companies.

The distinction between public and corporate dissaving is particularly important to this view.

Public Dissaving vs. Corporate Dissaving

Corporate dissaving reflects the financial behavior of businesses, including the borrowing activity associated with large-scale investment.

In the context of this analysis, hyperscaler debt issuance is considered through corporate dissaving.

Public dissaving, meanwhile, relates to the government’s financial position and the gap between public spending and available income.

The author argues that corporate dissaving is not close to the levels observed during the early-2000s IT bubble. Public dissaving, however, appears much larger relative to historical experience.

This comparison leads to the conclusion that government finances are a more likely explanation for the rise in long-term Treasury yields.

Why Rising Government Debt Matters for Bond Markets

Growing public debt can increase concerns about a government’s fiscal position and its ability to manage future borrowing requirements.

When investors become more concerned about fiscal sustainability, they may demand additional compensation for holding government debt.

This is the mechanism behind the fiscal risk premium argument presented in the analysis.

From this perspective, rising long-term yields are not simply a reflection of developments in the technology sector. They may also indicate increasing concern about the structural financial challenges facing the United States.

The Risk of Running Out of Fiscal Space

The author argues that the United States and other G10 economies face significant structural challenges, with limited fiscal space among the most important.

Fiscal space refers to a government’s capacity to increase spending or respond to economic pressures without creating unsustainable financial risks.

As public debt and fiscal pressures grow, that capacity can become more constrained.

The analysis suggests that these challenges will remain important even after the war discussed by the author ends.

What the AI Sell-Off Means for the US Bond Market

The recent AI sell-off has provided an opportunity to examine the relationship between technology investment and Treasury yields.

Based on the market reactions discussed, the author concludes that AI-related developments have not had the expected influence on long-term yields.

The lack of a meaningful decline in the two-year, ten-year and 10y10y forward yield measures during the sell-off is presented as evidence against the idea that the AI investment boom is the primary driver of rising long-term borrowing costs.

Instead, the analysis points toward mounting fiscal stress and the growing burden of public debt.

The midterm elections and the subsequent AI sell-off have therefore offered what the author describes as a natural experiment for separating these competing explanations.

The broader concern is that, once the war ends, the United States and other G10 economies will still face their underlying structural challenges. Among them, the rapid loss of fiscal space remains a central issue.

Market Impact

The analysis highlights several important considerations for financial markets:

• US Treasury yields: The argument that fiscal pressures are driving long-term yields higher raises questions about the sustainability of government borrowing.
• Bond market sentiment: The limited response to the AI sell-off challenges the view that technology-sector investment is the dominant factor influencing long-term yields.
• US fiscal risk: Growing public debt and limited fiscal space remain important structural concerns for investors.
• Interest rate expectations: The behavior of the two-year, ten-year and 10y10y forward yields provides different perspectives on how markets are assessing economic and fiscal developments.

The source does not provide specific price movements for the US dollar, gold or other financial assets. Its central focus is the relationship between AI-related market developments, public debt and Treasury yields.

Frequently Asked Questions (FAQ)

Why are US Treasury yields rising?

The analysis argues that growing fiscal pressures and concerns about US public debt may be contributing to higher long-term Treasury yields through an increasing fiscal risk premium.

How does an AI sell-off affect Treasury yields?

If AI investment were a major driver of rising long-term yields, concerns about the sector might be expected to push yields lower. However, the analysis finds that the recent AI sell-off had essentially no impact on Treasury yields.

What is a fiscal risk premium?

A fiscal risk premium is the additional return investors may demand to hold government debt when concerns about a country’s fiscal position and public borrowing increase.

What is the difference between public and corporate dissaving?

Corporate dissaving relates to the financial position and borrowing activity of businesses, while public dissaving concerns the government’s financial position. The analysis argues that public dissaving is currently more significant relative to historical levels.