To The Moon

When the 30-year Treasury yield surged to a 19-year peak of 5.27% and the 10-year yield broke past 4.75%, U.S. Treasury Secretary Scott Bessent began executing an unprecedented combination of strategies.

Over the past week, he spearheaded the first joint intervention in the Japanese yen since 1998, planted language in a quarterly refunding statement hinting at possible cuts to long-term debt issuance, and publicly defended Federal Reserve Chair Kevin Warsh's communication approach.

Wall Street traders and strategists view these signals as evidence that Bessent is trying everything to halt the climb in long-term bond rates.

Priya Misra, a portfolio manager at JPMorgan Asset Management, commented: "The Fed and Treasury are certainly worried about the level of long-term rates. The intervention in Japan, supporting Warsh, and the potential to reduce long-term bond supply could all be signals that the Treasury is aware of what's happening in the rates market and is ready to use every tool at its disposal."

"Shielding the Yen, Protecting Treasuries": The Real Motive Behind the First Joint Intervention in 28 Years

On August 3rd, the U.S. and Japanese Treasuries jointly confirmed a coordinated intervention in the foreign exchange market, buying yen. This marked the first time the U.S. had intervened in the yen exchange rate since 1998, and the first time in 28 years it acted to support the Japanese currency.

That same day, a photograph of a "note" revealed the operation's catalyst. During a Trump cabinet meeting, Bessent's to-do list included the item: "Buy yen (JPY), $5 to $10 billion."

The true motive behind this action is far more complex than simply "supporting an ally." Japan is the largest foreign holder of U.S. Treasuries, with holdings exceeding $1.1 trillion. If Japan were forced to sell Treasuries to raise funds for intervention, it would directly push up already elevated long-term U.S. rates.

With the 10-year yield at its highest since January 2025 and the 30-year reaching levels not seen since 2007, Washington's concern has moved from theoretical to becoming an urgent driver of policy action.

The execution method is particularly telling. Instead of selling U.S. dollars to buy yen—which would directly push up Treasury yields—Bessent executed the intervention by selling euros and buying yen, cleverly avoiding a direct impact on the Treasury market.

Joe Brusuelas, chief economist at RSM, assessed: "As a hedge fund manager, Bessent saw an opportunity to support a key U.S. ally while simultaneously lowering the yield curve and supporting the dollar."

Bessent also played another key card. Following the intervention, he publicly called on the Fed to expand its Foreign and International Monetary Authorities (FIMA) Repo Facility. This facility allows foreign central banks to borrow U.S. dollars using their Treasury holdings as collateral, without needing to sell the bonds directly in the market.

Bessent explicitly stated that, given the bond market's size has far exceeded what it was when the facility was created in 2020, "it would be reasonable for the Fed to consider expanding the scale of this tool."

A senior macro strategist at State Street noted this signal "might be more important than the intervention itself"—it signaled to the market that Japan could obtain dollar liquidity without selling Treasuries. By shifting Japan's "ammunition" from "selling Treasuries" to "pledging Treasuries," Bessent fundamentally severed the chain of yen depreciation leading to Treasury sales and pushing up yields.

John Velis, U.S. macro strategist at Bank of New York, commented: "Given the current spending policies and war situation, easing economic pressure over the long term will be very difficult."

Signaling a Potential Cut in Long-Term Bonds: Breaking the Market's 'Only Up' Expectation

If the yen intervention was Bessent's first card, then the wording change in the quarterly refunding statement was a signal release with far more profound implications.

On August 6th, the U.S. Treasury altered its language regarding future coupon-bearing bond auction sizes from "potential future increases" to "potential future changes" in the quarterly refunding statement. This marked the first directional loosening in the Treasury's guidance on long-term bond issuance since Bessent took office in early 2025.

The market immediately interpreted this as a signal that the Treasury might reduce auction sizes for 20-year and 30-year bonds. A BMO Capital Markets survey found that approximately 61% of clients expected the next move in 30-year bond auction sizes to be a reduction rather than an increase.

Gennadiy Goldberg, head of U.S. rates strategy at TD Securities, believes this wording change "helps improve market sentiment at the long end of the curve." This signal broke the market's long-held expectation that Treasury issuance would "only ever increase."

With the Treasury market's size roughly doubling to about $31 trillion since 2018, any marginal change in supply can significantly impact long-term rates. However, Deutsche Bank strategist Steven Zeng pointed out that, considering the government's massive financing needs, cutting long-term bond issuance is not the base case, and the wording change may be merely intended to temporarily reduce the negative market reaction to potential auction increases.

Defending Warsh: A Battle of 'Detox' and Market Confidence

Bessent's third maneuver was defending Fed Chair Warsh. Following the July FOMC meeting, Warsh refused to provide clear guidance on how or when the central bank would lower inflation, triggering a significant sell-off in the bond market.

Facing market doubts about Warsh's credibility in curbing inflation, Bessent publicly defended him in the media, describing Warsh's communication strategy as a "detox"—weaning financial markets and journalists off their over-reliance on the Fed's forward guidance.

However, Bessent's combination of tactics faces a deep internal contradiction. On one hand, he attempts to lower long-term rates through supply-side operations (intervening in the yen, hinting at cutting long-term debt). On the other hand, the Warsh-style "silent communication" he supports is itself a factor pushing up long-term rates—markets demand a higher term premium due to a lack of policy certainty.

Phoebe White, head of U.S. rates strategy at UBS, noted that the Treasury's recent moves might have only a limited impact, but they show that "if the Treasury can do anything to stop long-term yields from rising further, it will use every tool available."

The Limits of Bessent's Measures: Structural Forces Far Outweigh the Treasury's Toolkit

Despite the widespread interpretation of Bessent's triple play, its actual influence faces severe structural constraints. While Bessent's actions had some short-term effects—the 10-year yield briefly fell to 4.61% after the intervention and a drop in oil prices—analysts generally believe their impact is limited. The 30-year yield remains above 5%, and the 10-year yield is around 4.62%.

First, there is the stickiness of inflation. Inflation has remained above the Fed's 2% target for approximately five years. Bondholders need clear evidence that inflation is truly under control before lending at lower rates. Strategists at BNP Paribas note that while reducing long-term bond auctions is one of the few powerful tools to lower yields, if the Treasury signals its intentions gradually, it could lose the element of surprise.

Second, there is the scale of the deficit. The U.S. government adds nearly $2 trillion in new deficits annually, requiring continuous issuance of substantial new debt. Deutsche Bank believes cutting long-term bond issuance is not the base case due to these massive financing needs. Strategists at CIBC bluntly state that reducing some coupon-bearing bond auctions "isn't even being considered yet."

Third, there is the impact of geopolitics. Surging oil prices due to the war in Iran have triggered a new inflation shock, pushing the 10-year Treasury yield to around 4.65%, higher than at the start of Trump's second term. Strategists at CIBC warn that if the Treasury significantly increases short-term debt issuance to reduce long-term bond supply, short-end yields could also rise as they must attract more buyers.

"With long-term rates rising, the U.S. Treasury market has clearly become so fragile that we are encouraging foreign holders not to sell," said Peter Boockvar, chief investment officer at Onepoint Bfg.