US Treasuries—Drawing a Line at the Long End

US Treasuries—Drawing a Line at the Long End

On August 19, the US Treasury announced that it will at least double the size of its long-term bond buybacks, from $2 billion to $4 billion per operation, between September 9 and the November Quarterly Refunding. The announcement followed a rise in the 30-year Treasury yield to roughly 5.3% and is drawing attention to how the Treasury may respond if pressure at the long end persists.

The increase focuses on Treasury (UST) securities with 10–20 years and 20–30 years remaining to maturity. The purchases involve off-the-run issues rather than current benchmark bonds, consistent with Treasury’s stated goal of improving liquidity in older, less actively traded securities. Discussions about increasing the size and frequency of the buyback operations, which have been in place since 2024, predate the recent rise in yields, so it is difficult to view the decision simply as a response to the latest market move.

The purchases remain small relative to the overall Treasury market, but yields were down approximately 9 basis points (bps) at the long end following the announcement. The reaction appeared to be about more than the purchases themselves, with investors also considering what Treasury might do if long-term yields continue to rise.

Western Asset’s investment team views the increase as more than an effort to support liquidity, seeing it as a signal that Treasury is increasingly attentive to higher long-term yields and willing to respond. The decision to increase buybacks outside the regular Quarterly Refunding process adds to that interpretation. Coming after the recent intervention in the Japanese yen, it also suggests that Treasury Secretary Scott Bessent is prepared to use the tools available to Treasury when market conditions run counter to the administration’s objectives.

See more: Cooler Inflation Data Eases Pressure on the Fed