Treasury yields retest highs as buyback lift fades fast

Treasury yields climbed above 5.28% on the 30-year bond, keeping long-term borrowing costs near recent highs. The August 19 buyback lift faded.

The 30-year yield moved back through the level seen before Treasury Secretary Scott Bessent expanded the government’s buyback program outside the regular schedule. The yield remained just below the 19-year high reached before that intervention, according to the market levels cited in the source material.

Buyback lift fades by Tuesday

The August 19 announcement was followed by a decline in long yields, but that move did not hold as a broader global bond selloff resumed. Mark Cabana, head of US rates strategy at Bank of America, said, "Investors demand the greatest compensation to extend that far out."

The 10-year Treasury yield climbed to about 4.8%, its highest level since January 2025, shortly before President Trump returned to the White House. The two-year yield, which is more closely tied to Federal Reserve policy expectations, rose six basis points to 4.4% on Tuesday.

Traders priced in roughly a 70% chance that the Federal Reserve will raise interest rates at this month’s meeting, which would be the first increase since 2023. Higher short-end yields tend to lift borrowing costs quickly, while long-end yields affect mortgages, corporate debt and the government’s financing profile.

Long bonds weaken globally

The pressure was not limited to Treasuries. Germany’s 30-year yield touched its highest level since 2011, the equivalent UK rate rose to a level last seen in 1998, and Australian long bonds set a record in data going back to 2016.

A global sovereign-bond yield index also climbed to its highest level in almost two decades. The moves coincided with investor concern over oil-driven inflation and large government deficits, two forces that can raise the compensation buyers demand for holding debt over decades.

Bessent has played down the selloff while defending the Treasury’s ability to act in strained markets. He said this week, "I’m fine with it," adding, "The market is the market."

In a separate comment Tuesday, Bessent said, "I don’t think we are in any kind of a dire situation." His remarks contrasted with earlier emphasis on the Treasury’s broad toolkit and the Trump administration’s stated goal of lowering yields and easing borrowing costs.

Scenarios hinge on inflation

If inflation expectations stay elevated and deficit concerns keep long-bond demand weak, global financial conditions would remain tighter through higher benchmark rates. For the Treasury, that would reduce the visible effect of buybacks; for banks, mortgage lenders and corporate borrowers, refinancing costs would stay under pressure.

If the Federal Reserve’s path instead looks less restrictive after this month’s meeting, yields could stabilize as traders reduce the probability of additional rate increases. That would give the Treasury’s buyback program more room to support market functioning, while easing pressure on rate-sensitive sectors such as housing and long-duration corporate debt.

The main open issue is whether long-bond investors view the August 19 step as a market-function tool or as an attempt to cap yields. The answer matters beyond Treasuries: US long rates are a reference point for global sovereign debt, dollar credit and mortgage pricing.