Treasury Secretary Scott Bessent's attempts to control bond market movements by increasing buybacks of longer-dated bonds have largely been dismissed by traders. Despite his repeated warnings to investors that they are making a mistake by driving up US Treasury yields, and his assertion of having inside information on government policy, the market reaction has been contrary to his intentions. On Wednesday, the Treasury announced a buyback of $6 billion worth of 10- to 20-year government bonds, an increase from previous targets of $2 billion and $4 billion, intended to boost demand and lower yields.

However, this move backfired, as most Treasury yields sharply jumped on the announcement. The benchmark 10-year bond yield surged to 4.85%, its highest level since November 2023, while 20- and 30-year bond yields rose to 5.3%. This surge occurred despite strong demand for a separate $39 billion sale of 10-year notes, which saw the highest demand since 2019 at a yield of 4.834%. The S&P 500 and Nasdaq Composite, sensitive to interest rates, both experienced declines of 0.6% and 0.8% respectively, following the bond market's reaction.

Analysts attribute the market's defiance to underlying economic fundamentals, particularly the escalating US national debt, which recently surpassed $40 trillion, and a deficit around 6% of GDP. Investors are increasingly focusing on these realities rather than government interventions. Scott Bessent's prior statements, including his attempt to address a "fever" in the bond market and his claim of being "the house now," have been viewed by some as an invitation for markets to test the Treasury's resolve. Critics, such as legendary investor Stanley Druckenmiller, have warned that once markets perceive the Treasury is defending a price, any rise in yields becomes a test of official determination, requiring increasingly larger operations to maintain control.