US Treasury Secretary Scott Bessent confirmed that the Treasury has not purchased any bonds despite earlier reports of planned interventions. He stated the department will continue with its regular auction programme.

Clarification on Interventions

Bessent addressed speculation regarding countermeasures against bond vigilantes. He explicitly stated, "We haven't bought a single bond yet." This contradicts earlier reports suggesting imminent secondary market purchases to support long-dated bond prices.

Auction Schedule and Next Steps

The Treasury affirmed it will maintain its standard issuance schedule. Key details from Bessent's comments include:

• Regular Programme: Continuation of standard Treasury auctions.
• Next Operation: Scheduled for Sept 9.
• Future Communication: Investors will hear from the Treasury again at the beginning of the next quarter.

Bessent described the current approach as a "warning shot" and a "level-set," indicating an appropriate action to stabilise market expectations without immediate structural changes like eliminating the 20-year bond issuance.

The 30-year US Treasury yield touched 5.33% on Tuesday, marking its highest level since June 2007. This move prompted the Treasury Department to double the size of its long-end buybacks within 48 hours.

While some commentators revived fears of an "American debt crisis," a broader look at global markets suggests a different dynamic. Yields are rising across major economies, driven by shifting monetary policies and increased supply from the technology sector rather than sovereign insolvency risks.

Global Yield Context

Rising borrowing costs are not isolated to the United States. Japan’s 10-year government bond yield reached 2.95%, a level last seen in September 1996. In Europe, Germany’s 10-year Bund hit its highest point since 2011, while French borrowing costs peaked at levels unseen since 2009, with the 30-year OAT near 4.90%.

In the UK, the 30-year gilt trades around 5.80%, close to the May peak that marked the strongest reading since 1998. Despite these highs, no market participants are labeling Berlin, Tokyo, Paris, or London as insolvent.

What Is Actually Being Repriced?

The long end of the yield curve primarily prices the compensation investors demand for locking up capital for decades. After 2009, this number collapsed due to central bank bond purchases and inflation that struggled to reach 2%. Both conditions have now reversed.

Central banks in the US, eurozone, and Japan are shrinking balance sheets or normalizing policy. US consumer inflation stands at 3.4%. Brent crude oil sits above $85 a barrel, roughly 50% higher than in January, amid unresolved conflicts in Iran.

A significant new factor is supply from the technology sector. The five largest cloud companies – Alphabet Inc (NASDAQ: GOOGL), Microsoft Corp. (NASDAQ: MSFT), Meta Platforms Inc. (NASDAQ: META), Amazon.com Inc (NASDAQ: AMZN), and Oracle Corp. (NASDAQ: ORCL) – issued $121 billion of bonds in 2025. This compares to an average of $28 billion annually between 2020 and 2024, according to BofA Securities.

Nomura estimates that technology issuance now equals about a quarter of net Treasury supply reaching private investors, five times last year’s share. With more sellers of long-dated paper competing for the same pool of buyers, prices fall and yields rise regardless of the issuer.

Does The American Debt Math Still Work?

Fiscal pressures remain real. Gross federal debt crossed $40 trillion this week. Federal interest payments are running near $1.25 trillion annualized, representing about 3.3% of gross domestic product, the highest share since 1991 and exceeding the defense budget. The deficit is tracking near 5.8% of GDP.

However, the marginal cost of borrowing is distinct from the average cost. The Treasury’s average interest rate on marketable debt was 3.44% in July. New issuance enters this average slowly as older paper matures. Meanwhile, nominal GDP grew about 6.5% year over year in the second quarter.

As long as nominal growth exceeds the average cost of debt, the stock of borrowing does not compound independently. Before 2008, the 10-year Treasury traded above 5% for most of the time. It currently sits at 4.69%.

What the Numbers Show

The divergence between the marginal cost of new debt and the average cost of existing debt provides a buffer against immediate fiscal instability. With nominal GDP growth at 6.5% and the average interest rate on marketable debt at 3.44%, the US economy generates sufficient growth to outpace the compounding cost of its current debt stock, even as new issuance costs rise toward 5%.