Why did the U.S. Treasury unexpectedly double bond buybacks just before the midterm elections, and what was the immediate market impact?

The U.S. Treasury unexpectedly doubled bond buybacks in the two months before the midterm elections to steady the shaky government debt market amid a surge in long-dated yields to multi-decade highs — a move not mentioned in its quarterly refunding plans published two weeks earlier; the intervention helped the latest 20-year Treasury auction proceed without difficulty, though it also caused the dollar to fall sharply across the board.

What is 'Operation Twist' in this context, and how does the Treasury's buyback plan relate to it?

In this context, 'Operation Twist' refers to shifting the composition of Treasury debt issuance toward more short-term funding while repurchasing older, less traded long-maturity debt — the Treasury's buyback plan doesn't reduce total debt but may emphasize raising more short-term funds, aligning with that strategy.

Morning Bid: Twist and Shout

Aug 20, 2026

The U.S. Treasury doubled bond buybacks to stabilize debt markets, while Moderna and Merck surged on a cancer vaccine breakthrough. Middle East conflicts reduced refining capacity, driving European diesel and U.S. gasoline prices significantly higher.

reuters

2026-03-10

March 10 Business Watch: Syngenta ends paraquat production; Moderna settles lipid patent case

2026-04-24

CureVac sues Moderna for patent infringement over COVID-19 vaccines

2026-08-19

Moderna shares surge as melanoma vaccine with Merck succeeds in large trial

2026-08-19

Moderna, Merck Breakthrough Could Usher in Wave of Cancer Vaccines

2026-08-19

Asian Stocks to Gain as US Treasury Supports Bonds: Markets Wrap