The U.S. Treasury unexpectedly announced on Wednesday (August 19) that it would double the size of its long-term Treasury repurchase program to at least $4 billion per tranche in an attempt to curb soaring borrowing costs. However, this move failed to quell deep-seated market concerns about inflation and the continued expansion of government debt. The 10-year Treasury yield rose 4.7 basis points to 4.70% on Thursday, and the 30-year Treasury yield rose 5.5 basis points to 5.249%, gradually approaching the 19-year high of 5.34% reached on Tuesday. The market views the repurchases as only a "short-term relief," with the fundamental problems—unsustainable fiscal deficits, inflation, and policy uncertainty—remaining unresolved.

Doubled repurchase agreements fail to stem yield rebound, market questions "band-aid effect".

Facing a surge in long-term U.S. Treasury yields to their highest level since 2007, the U.S. Treasury announced on Wednesday that it would double the size of its long-term Treasury repurchase program, bringing the total to at least $4 billion per transaction. This followed a sharp sell-off in long-term Treasuries, with markets under continued pressure due to concerns about ballooning government debt, inflation, and competition from massive AI-related lending. However, this move failed to effectively curb the rise in yields. The benchmark 10-year Treasury yield rose 4.7 basis points to 4.70% on Thursday, while the 30-year Treasury yield rose 5.5 basis points to 5.249%, nearing Tuesday's 19-year high of 5.34%. The dollar recovered slightly from Wednesday's low to 98.88, after the dollar index fell nearly 1% following the Treasury's announcement, marking its biggest one-day drop since March. The co-head of global fixed income at Wells Fargo Investment Institute stated that the Treasury's move could only provide "short-term relief" because the key factors driving yields higher—inflation, monetary policy uncertainty, and the massive fiscal deficit—remain. “This little ‘band-aid’ applied today isn’t enough to solve the problem,” noted the chief investment officer of fixed income at Principal Asset Management. “Any intervention is generally not particularly effective in the long run. After a while, yields tend to just return to their previous levels.” While the amount of the repurchase is negligible in a market worth $32 trillion, analysts say the move indicates that the government is highly sensitive to rising long-term interest rates and tends to intervene in the market. Investors also say the decision raises the question of whether the Federal Reserve or the Treasury has a greater influence on overall credit conditions. Just weeks earlier, the U.S. Treasury had bought yen in the foreign exchange market.

Bessenter: May further expand share buybacks; $40 trillion in debt is "not a cause for concern".

U.S. Treasury Secretary Matt Bessant said on Thursday he might further expand the Treasury's repurchase program of U.S. Treasury bonds, with each transaction potentially exceeding $4 billion. Bessant stated that the recent rise in U.S. long-term bond yields to near 20-year highs is inconsistent with the vitality shown by the U.S. economy. He also mentioned that the Trump administration is planning to cut government spending that has pushed the total government debt past $40 trillion. Bessant said the repurchase measure aims to support market liquidity, especially given the relatively thin trading in August, and the competition in the bond market from companies issuing bonds at higher yields, including financing needs related to AI infrastructure. "This is also, to some extent, a signal that we believe yields do not reflect fundamentals," Bessant said. The day after the total U.S. public debt surpassed the symbolic $40 trillion threshold, Bessant stated that "there is no magic in the $40 trillion number," and that the U.S. will overcome its debt crisis through economic growth. He stated that this year's increased deficit was due to the return of tariffs ruled illegal by the Supreme Court, and that this situation will not repeat itself next year. He also stated that he expects tariff revenue in 2026 to be on par with 2025.

$40 Trillion Debt and Interest Burden: Structural Pressures Continue

U.S. government spending, which is difficult to control, continues to grow, including social welfare programs such as Social Security and Medicare, as well as rising debt financing costs. Interest payments for the first ten months of the current fiscal year have already approached $1.2 trillion, just shy of the level for the entire previous fiscal year. High U.S. Treasury yields are not only pushing up government financing costs but also increasing borrowing costs for businesses and households. Since the outbreak of the U.S.-Iran conflict, the U.S. 30-year fixed mortgage rate has risen by more than 0.5 percentage points, reaching its highest level in a year. A global head of research at Standard Chartered Bank stated that yields have reached levels the Treasury Department does not want to see, "which suggests they intend to control or intervene in the naturally occurring supply and demand relationship." JPMorgan analysts pointed out that the Treasury Department's announcement has barely addressed the fundamental problems driving up yields—unsustainable fiscal deficits and rising inflation expectations. Global long-term borrowing costs have risen to multi-decade highs, with Japanese borrowing costs pushed to a 30-year high, and German 30-year bond yields slightly below the 15-year high reached on Wednesday.

Summarize

The US Treasury increased the size of its long-term Treasury repurchase agreements to at least $4 billion per transaction, with room for further expansion. This had a short-term stabilizing effect on market sentiment, but failed to prevent long-term yields from rising again. Yields on 10-year and 30-year Treasury bonds climbed again the day after the policy announcement, while the dollar also rebounded slightly. The market viewed this move as liquidity support rather than a supply-demand rebalancing; the fundamental pressures remain from fiscal deficits, inflation, and increased supply. Total debt exceeding $40 trillion, interest payments approaching $1.2 trillion this fiscal year, and mortgage rates reaching a one-year high indicate that structural contradictions are unlikely to be resolved in the short term. The high global long-term borrowing costs are expected to persist.