US Treasury's bond intervention shows signs of effectiveness as 30-year yields retreat from 2007 highs

The US Treasury just pulled out a bigger fire extinguisher. Whether the fire cares is another question entirely.

Treasury Secretary Scott Bessent announced on August 19 that the department would double the size of its liquidity support buyback operations for longer-dated Treasuries, raising the cap from $2 billion to at least $4 billion per buyback. The move came one day after the 30-year Treasury yield hit 5.337%, a level not seen since 2007.

The immediate impact

Markets responded the way markets do when a large buyer shows up with a megaphone: the 30-year yield dropped 9 to 10 basis points, settling around 5.19% following the announcement. By August 20-24, yields had already crept back up into the 5.24% to 5.27% range.

The expanded buyback operations are scheduled to run from September 9 through November 4, injecting over $14 billion in incremental liquidity support throughout the quarter. That sits within a larger planned repurchase total of up to $83 billion across various Treasury programs this quarter.