Sep 3, 2026 · 45 min
Treasury supply tests the bond market’s capacity
What's Behind the Big Surge in US Government Bond Yields
Rising yields reflect not only inflation and fiscal concerns but also whether dealers and markets can absorb unprecedented government borrowing.
- 1Heavy Treasury issuance is colliding with constrained dealer balance sheets, making market capacity central to the yield debate.
- 2Treasury buybacks can improve liquidity by removing illiquid securities, but they are not equivalent to forcing borrowing costs lower.
- 3Shrinking the Federal Reserve’s balance sheet faces practical limits because reserves, currency, and the Treasury General Account remain essential liabilities.
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Darrell Duffie explains why routine Treasury buybacks can remove illiquid market “dust” without becoming an attempt to force borrowing costs lower.
The brief
Darrell Duffie links rising long-term yields to the scale of Treasury issuance, constrained dealer balance sheets, inflation concerns, and doubts about the market’s capacity to absorb debt.
The discussion distinguishes Treasury buybacks from quantitative easing: removing illiquid off-the-run securities can improve trading conditions without necessarily lowering the government’s borrowing costs.
Duffie argues that shifting issuance toward short-term bills could reduce long-term pressure but would expose taxpayers to greater interest-expense volatility as rates change.
The episode’s sharpest policy tension concerns the Federal Reserve’s balance sheet, whose size and composition cannot simply return to the pre-2008 low-reserve system.
The broader takeaway is that market plumbing matters, but extraordinary intervention should be reserved for genuine dysfunction rather than routine efforts to suppress yields.
Featuring
Mentioned
United States Department of the Treasury
Donald John TrumpListen to the full episode and explore every guest, topic, and moment on PodLume.