US Treasury Secretary Scott Bessent unveiled plans on August 19 to at least double buybacks of longer-dated government securities in an effort to reduce borrowing costs amid rising yields and market uncertainty [1, 2, 3, 4, 5]. Bessent described the strategy as a "Treasury Twist," modeled after the Federal Reserve's 1960s Operation Twist, aiming to push down long-term interest rates by buying long bonds while issuing more short-term debt [2, 3].

Following the announcement, the US dollar dropped sharply on August 21, recording its largest single-day decline in nearly three weeks. Hedge funds increased short positions against the dollar, betting that aggressive Treasury intervention could weaken investor confidence in the currency [1, 3]. Rabobank strategist Jane Foley said the week “could be particularly difficult for the dollar” due to speculation the Treasury’s attempts to lower yields might hurt its credibility [3].

Despite the expanded buyback program, 10-year and 30-year Treasury yields have climbed to multi-year highs around 4.73% and 5.24%, respectively, stoking concerns about borrowing costs for the federal government [2, 4]. The US fiscal deficit remains large at about 6% of GDP, with government debt surpassing $40 trillion and annual interest expenses topping $1 trillion [2, 6]. Analysts warn that persistent fiscal deficits and rising debt constrain the effectiveness of buybacks in suppressing yields long-term [2, 6, 5]. Brookings Institution’s Robin Brooks cautioned that fiscal attempts to control bond yields “may ultimately worsen inflation” [6].

Peering ahead, market participants are awaiting Federal Reserve Chairman Kevin Warsh’s first keynote speech at the Jackson Hole Global Central Bankers Conference on August 28 for signals on inflation and monetary policy amid bond market strain [7, 8, 6, 9, 10]. TD Securities strategist Molly Brooks noted that a lack of clear guidance from Warsh could disappoint markets, potentially adding to long-bond selling pressure [2].

Meanwhile, geopolitical tensions are rising as the US prepares new sanctions against Iran, contributing to oil price increases and inflationary pressures, which further complicate the fiscal and monetary outlook [3, 9, 4, 5].

The Treasury’s expanded bond buybacks take effect immediately, with investors closely watching whether these efforts will stabilize yields before Warsh’s widely anticipated Jackson Hole address scheduled for August 28 [1, 3, 7, 8, 6, 9, 10].