U.S. Treasury Secretary Scott Bessent is pairing larger repurchases of long-dated government bonds with direct currency-market action, a combination that has pushed benchmark Treasury yields lower while intensifying debate over how far debt-management tools can offset the pressure created by persistent federal borrowing.
The Treasury said it would at least double buybacks of Treasuries maturing in 10 to 30 years, expanding a program that had been outlined only two weeks earlier. On the announcement day, the 10-year Treasury yield fell by about 6 basis points, while the 30-year yield declined by nearly 9 basis points. The dollar index also slipped to a three-month low.
Treasury buybacks remove outstanding securities from the market by purchasing them from dealers. In this case, concentrating purchases in longer maturities would support prices for the same bonds used to set borrowing costs across mortgages, corporate lending and other long-term credit markets. Bond yields move inversely to prices.
The move followed earlier Treasury signals that the government could reduce the size of long-term bond auctions. Together, smaller planned issuance and increased buybacks would reduce the available supply of duration — bonds especially sensitive to changes in interest rates — while adding official demand at the long end of the yield curve.
Debt costs place pressure on Treasury policy
The measures arrive as the U.S. government faces rising interest costs from refinancing debt issued during the low-rate period of 2020 and 2021. Federal net interest outlays reached $963 billion in the first 10 months of fiscal 2026, or roughly $3.18 billion per day, according to Treasury budget data cited in the material. That was 14% higher than during the comparable period a year earlier.
The fiscal 2026 deficit had reached $1.8 trillion over the same period, 5% wider than a year earlier. Social Security, Medicare, defense spending and interest payments all contributed to higher outlays.
At the latest levels cited, the 10-year Treasury yield stood at 4.72% and the 30-year yield was 5.31%. Those rates remain well above the yields the government paid on much of its debt stock before the Federal Reserve began raising interest rates in 2022.
Buybacks may help improve trading conditions and influence the mix of securities available to the market, but they do not reduce the government’s total financing needs. The Treasury must continue issuing debt to cover budget deficits and refinance maturing obligations. That distinction is central to the concern raised by former Treasury official Mark Sobel, who argued that sustained relief in the bond market would ultimately require fiscal consolidation rather than more active management of the yield curve.
Sobel, who spent nearly four decades at the Treasury Department, described Bessent as the most aggressive Treasury secretary since the early 2000s. He also criticized the administration’s involvement in yen intervention.
Rare U.S. support for the yen
On July 31, U.S. and Japanese authorities bought yen in the foreign-exchange market, marking the first direct U.S. participation in yen-support intervention in nearly three decades, according to the supplied account. The Peterson Institute for International Economics estimated that Japan used around $87 billion of foreign-exchange reserves during the final two days of July to purchase its currency.
The U.S. Treasury reportedly sold euros rather than dollars in its portion of the operation, while euro-area authorities were not informed in advance. That detail could draw attention in European policy circles because currency intervention typically involves close coordination among the countries whose currencies are being traded.
Japan’s position in the Treasury market adds another layer to the operation. Japanese institutions hold about $1.1 trillion in U.S. Treasuries, making Japan the largest foreign holder of U.S. government debt. A weaker yen can affect the incentives of Japanese holders of dollar assets, particularly when currency-hedging costs rise, while any shift in Japanese demand is closely watched by Treasury traders.
The intervention coincided with a partial recovery in the yen, though it did not reverse its broader weakness. The dollar-yen exchange rate had climbed to 163.98 on July 23 before easing to 159.43 by August 17. CNBC described the yen as continuing to face downward pressure after the operation.
Debate over activist debt management
The policy approach resembles a debate that has circulated under the label “activist Treasury issuance,” or ATI. In a 2024 paper, Stephen Miran and Nouriel Roubini warned that governments could use issuance decisions, buybacks and related tools to shape financial conditions in ways traditionally associated with monetary policy.
Robin Brooks, a senior fellow at the Brookings Institution, characterized the approach as an effort to manage the yield curve rather than address underlying debt and deficit levels. The concern is that issuance choices can temporarily influence long-term yields, but may become less effective if bond traders demand higher compensation for inflation, fiscal risk or heavy future supply.
Guy Miller, chief strategist at Zurich Insurance, said such measures can work for a period. John Velis, a macro strategist at BNY, said easing long-end yield pressure would be difficult under current spending and geopolitical conditions.
Bessent’s career has made the market reaction especially closely watched. Before entering government, he worked on macroeconomic trades involving major currency shifts, including at George Soros’s firm during Britain’s 1992 exit from the European Exchange Rate Mechanism. He later returned to the firm as chief investment officer and led a $1 billion short position against the Japanese yen in 2013. In 2015, he founded Key Square Capital Management with $4.5 billion.
The Treasury’s latest actions have already shown they can move yields quickly. Their longer-term effect will depend less on buyback announcements than on whether deficits, inflation expectations and demand for U.S. debt allow lower borrowing costs to persist.
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