Treasury Doubles Debt Buybacks to Calm Bond Yields

U.S. Treasury Secretary Scott Bessent announced on Wednesday, August 19, that the department would at least double the size of its buyback operations for longer-dated government debt, a significant move aimed at calming a volatile bond market where yields had soared to levels not seen since before the 2008 global financial crisis.

The Treasury Department stated it would increase the per-operation cap for liquidity support buybacks of nominal coupon securities in the 10-year to 30-year sectors from $2 billion to at least $4 billion. These expanded operations are scheduled to begin on September 9, 2026, and run through November 4. The decision came as a surprise, just two weeks after the department had released its planned buyback schedule for the quarter.

The intervention was prompted by a sharp selloff in long-term Treasuries that sent borrowing costs to multi-year highs. Yields on the 30-year bond had recently climbed to their highest levels since 2007, with the yield reaching as high as 5.31% on August 17 before retreating slightly following the announcement. This move pushed the 30-year yield down approximately 10 basis points to around 5.18% on the day of the news, though...