US Treasuries: A Market in Transition

Introduction

The US Treasury market is entering a period of structural change. To be clear, we are not claiming that this implies an imminent funding crisis, nor that it diminishes the central role of Treasuries in the global financial system. The United States continues to benefit from the world’s deepest sovereign bond market, the US dollar’s dominant international role, and an exceptionally large and diverse investor base. What is changing is the economic mechanism through which an expanding supply of Treasury securities is absorbed and, consequently, the price the market may require to absorb that supply.

For decades, Treasury securities occupied a unique position in global finance. They served as the benchmark risk-free asset, the collateral underpinning trillions of dollars in derivatives transactions, the primary reserve asset for central banks around the world, and the safe haven to which investors have fled in moments of crisis. This status was not merely a matter of convention; it was reinforced by a specific set of economic conditions that made Treasuries exceptionally scarce and valuable. Those conditions are now shifting in ways that have profound implications for the pricing of US government debt and, by extension, for the broader global cost of capital.

The central question this paper explores is not whether sufficient capital exists to finance the United States, as there is little evidence that the country is losing access to funding. Rather, the question is shifting toward what yield, maturity structure and degree of financial intermediation are required to attract that capital. If the period following the global financial crisis (GFC) was characterized by a shortage of safe assets, the emerging environment may increasingly be characterized by the challenge of absorbing them.

This paper first examines the era of the safety premium—the post-GFC period in which a confluence of factors made Treasuries unusually valuable. It then traces the emergence of what we term an “absorption premium”—the additional compensation markets now require to intermediate a growing stock of government debt. Subsequently, it analyzes the supply backdrop of rising debt and persistent deficits, the competing demands for capital from artificial-intelligence (AI) infrastructure and other secular trends, and the changing identity of the marginal Treasury buyer. Next, it explores how debt-management policy has become a macroeconomic variable in its own right, and how monetary and fiscal policy are becoming increasingly interconnected through the Treasury market. Finally, it concludes by assessing what these changes mean for the future of the world’s benchmark sovereign bond market.

The changes described in this paper, while meaningful and structural, are hardly catastrophic; Treasuries remain indispensable to the global financial system. The transition underway suggests a gradual repricing of the costs associated with absorbing an ever-larger stock of US government debt, with consequences that will be felt not in a single dramatic event but in the persistent drift of yields, the growing sensitivity of markets to fiscal developments, and the increasing prominence of market structure as a driver of outcomes.

Indispensable but More Expensive at the Margin

Treasury securities remain foundational to global collateral markets, reserve management and dollar finance. There is little evidence that the United States is losing access to funding; auctions remain well-subscribed, the investor base remains deep and diverse, and the dollar’s reserve status remains intact. The more plausible structural transition is more nuanced: Treasurys may remain indispensable while becoming more expensive for the government to issue at the margin.

That distinction matters enormously. The central question facing the Treasury market is gradually shifting from whether sufficient capital exists to finance the United States to what yield, maturity structure and degree of financial intermediation are required to attract that capital. This is a question about pricing, not about access. The market will continue to absorb Treasury supply; the issue is what price it demands to do so, and how that price interacts with the fiscal trajectory, the structure of the buyer base, and the conduct of debt management.

The result is unlikely to be a single dramatic event. More likely, the transition will be reflected gradually in higher equilibrium real yields, as the absorption premium replaces the safety premium and the market prices in the costs of intermediating a growing stock of debt. We believe it will be reflected in greater sensitivity of long-term rates to fiscal and issuance developments, as the market’s marginal buyer becomes more price-sensitive and the supply backdrop becomes more persistent. We believe it will be reflected in a larger role for market structure and financial intermediaries, as leveraged investors become increasingly important to the absorption process and their financing conditions become a determinant of market functioning. We believe it will be reflected in increasingly active management of the maturity profile of federal debt, as the Treasury seeks to balance the competing demands of minimizing borrowing costs, maintaining market functioning, and preserving the predictability that has long been a cornerstone of its issuance practices.

These are meaningful changes to the architecture of the world’s benchmark sovereign bond market. The transition from a safety premium to an absorption premium is not a crisis, but it is a structural shift with far-reaching implications. It affects the cost of US government borrowing, the transmission of monetary policy, the pricing of risk across global financial markets, and the investment decisions of institutions around the world. Understanding these changes will be essential to interpreting US interest rates—and the broader global cost of capital—in the years ahead.

For investors, the implications are practical. A world in which Treasuries command an absorption premium rather than a safety premium is one in which the risk-free rate is higher, the term structure is steeper, and the sensitivity of long-term rates to fiscal and issuance developments is greater. Portfolio construction assumptions that were calibrated to the safety-premium era—low real yields, negative term premiums, and reliable negative correlation between bonds and equities—may need to be revisited. The 60/40 portfolio, which benefited investors for decades from the diversification properties of Treasury bonds, may face a less favorable environment if bonds no longer provide reliable downside protection during equity selloffs, as the April 2025 episode suggested.

For policymakers, the implications are equally significant. The Fed must contend with a Treasury market in which long-term rates are increasingly driven by factors outside its direct control—fiscal supply, issuance strategy, and the balance-sheet capacity of leveraged intermediaries. The Treasury Department must navigate the trade-offs between minimizing borrowing costs, maintaining market functioning, and preserving the predictability that has long underpinned the market’s credibility. And both institutions must reckon with the growing interdependence of their actions, as monetary policy and debt management increasingly act on the same long-end yields.

The transition from a safety premium to an absorption premium is, in a sense, a return to a more normal relationship between supply and price. The post-financial-crisis era was the anomaly—a period in which the world’s most important bond market was subsidized by an unusual confluence of factors that suppressed the cost of government borrowing below the level that a purely market-based pricing mechanism would have produced. The unwinding of those factors does not represent a failure of the Treasury market or a loss of confidence in the United States. It represents the gradual normalization of the pricing of government debt in a world where the supply of that debt is growing rapidly and the demand for capital is intensifying. Recognizing this transition for what it is—a structural repricing rather than a crisis—is the first step toward navigating it effectively.