What's Behind the Big Surge in US Government Bond Yields

PodcastOdd LotsDarrell DuffieSep 3

The discussion attributes higher long-term Treasury yields primarily to expanding government debt supply, persistent deficits, and weaker foreign demand rather than an acute liquidity shock or alarming forward inflation expectations. Treasury buybacks may support liquidity and signal a preference for lower yields, but their direct market power appears limited and could conflict with the Federal Reserve’s effort to preserve independence. The analysis also examines dealer capacity, maturity choices, term premiums, and the risk that shorter Treasury funding could increase refinancing and interest-expense volatility.

Fixed Income Government Debt Interest Rates Fiscal Policy Market Liquidity Monetary Policy

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Key Takeaways

Speakers identify the scale of government borrowing as the fundamental pressure on long-term Treasury yields: the Treasury market grew from roughly $18 trillion to $31 trillion, persistent deficits show no clear endpoint, and foreign investors are not absorbing the expanding supply. Domestic discretionary investors therefore require greater yield compensation, particularly at longer maturities.

Treasury buybacks may improve liquidity by removing illiquid odd lots from dealer balance sheets, but their direct influence on long-term yields appears limited: the initial market reaction to Scott Bessent’s signaling quickly reversed, and current liquidity indicators do not show an acute dysfunction. If buybacks expand despite normal liquidity measures, investors could interpret them as an implicit official target for lower yields.

The discussion frames Treasury policy and Federal Reserve independence as potentially conflicting: a 30-year yield above 5% increases the Treasury’s incentive to seek lower long-term borrowing costs, while the guest argues the Fed will resist fiscal dominance and retain tools to control its balance sheet. A prospective task force could recommend shifting some Fed holdings from longer-term Treasuries into bills and allowing mortgage-backed securities to roll off.

ECONOMY

Treasury-Fed Tension — A 30-year U.S. Treasury yield above 5% signals a substantial government interest-expense burden, giving the Treasury secretary an incentive to pursue lower long-term yields. Treasury buybacks and efforts to suppress those yields may therefore conflict with the Federal Reserve’s objectives.

“Well, if I'm the secretary of the treasury, it's telling me that The United States is spending a heck of a lot on interest expense, and I need to do…”—

Debt Supply Pressure — The speakers identify government borrowing relative to GDP as a fundamental force behind higher long-term yields. The Treasury market expanded from roughly $18 trillion to $31 trillion, while high deficits and debt ratios—including France reaching 100% of GDP—show no clear endpoint. This supply also competes with bond-financed investment by hyperscalers and others.

“Sure it does. And it's other bonds included in that. The hyperscalers have famously been demanding a lot of investment by bond investors, and it's all piling on…”—

Inflation Expectations — Although inflation has remained above the Federal Reserve’s preferred level for roughly five years, the speaker argues that it is not the primary concern for investors in 10-, 20-, and 30-year bonds. Forward inflation expectations implied by real and nominal bonds are not signaling alarm.

“But today, if you look at forward implied inflation numbers coming from real and nominal bonds Yeah. They're not showing alarm bells at all.”—

MARKETS

Jackson Hole Backdrop — Higher U.S. Treasury yields, particularly at the long end, are the central market backdrop to the Jackson Hole meeting. The discussion links that backdrop to a new Fed chair’s communications and balance-sheet task forces, as well as possible cross-currents between the Federal Reserve and Treasury.

“However, the unofficial theme has to be what the heck is going on with bond yields and the Federal Reserve because this whole meeting is coming against a backdrop of…”—

Dealer Capacity Risk — The March 2020 dysfunction showed that scarce dealer balance-sheet capacity can force the Federal Reserve to intervene while bond yields become sharply volatile. Dealers currently have more capacity despite heavy trading volumes, but their balance sheets could become clogged again.

“In March 2020, when the markets became dysfunctional, the Fed had step in and dig out the balance sheets of the largest dealers to keep the bond market moving, and…”—

Foreign Demand Slows — Foreign central banks are no longer adding meaningfully to their Treasury holdings, and foreign investors generally are not absorbing the market’s expanding supply. Domestic discretionary investors therefore demand greater yield compensation to take on additional Treasuries.

“The foreign central banks, they have had what they need for a long time now. They're not buying more…”—

FORECASTS

Refinancing Risk — Aggressively shorting U.S. government debt could backfire on bond vigilantes. A shorter maturity profile would require more frequent refinancing at current auction yields, increasing interest-expense volatility; the U.S. currently has an average debt maturity of about six years.

“Well, that would be a formula for increasing the interest rate expense volatility for the US government because your debt maturity is going to be shorter and shorter. Right…”—

Bond Yield Surge

The hosts introduce the Jackson Hole backdrop and ask whether rising long-term Treasury yields reflect market plumbing, fiscal pressures, or Federal Reserve policy tensions.

Treasury Supply Pressure

Duffy argues that higher long-term yields primarily compensate domestic investors for absorbing expanding government debt supply as foreign central banks stop increasing their Treasury holdings.

Debt Volume Reversal

The discussion traces the yield reversal to the Treasury market’s growth from roughly $18 trillion to $31 trillion and the persistent accumulation of government debt relative to GDP.

Fed Fiscal Dominance

Duffy says the Federal Reserve is avoiding fiscal dominance and would resist yield-curve control because of the damaging history of the 1950s Treasury-Fed conflict.

Treasury Buyback Limits

Research indicates buybacks can improve liquidity by removing illiquid off-the-run securities, but recent market conditions did not show the dysfunction that would justify extraordinary intervention.

Buybacks And Maturity

Treasury buybacks resemble a limited Operation Twist, but their direct firepower is small and shifting issuance toward bills could eventually increase refinancing and interest-expense volatility.

Fed Balance Sheet Constraints

The conversation examines why shrinking the Federal Reserve’s balance sheet is difficult, since bank reserves are valuable for regulation, payments, and interest income.

Term Premium Debate

Duffy explains term premium as the risk compensation above expected short-term rates, while acknowledging that decomposing and measuring it remains difficult.

Buyback Reaction Function

The hosts recap the episode, question Treasury’s liquidity rationale, and consider whether expanded buybacks create an implicit yield target that traders may monitor.