The Treasury Department’s first expanded buyback of long-dated government bonds has failed at its stated job. The department tripled the operation to $6 billion to support a bond market under strain from the Iran war’s oil shock, but the 10-year yield climbed to nearly 5% after the purchase, its highest level in almost three years, and the 30-year crossed a threshold last seen in 2004.
Treasury bought $5.19 billion of debt maturing in 10 to 20 years on Thursday afternoon, short of the $6 billion maximum announced a day earlier, after receiving more than $10 billion in investor offers. The 10-year yield extended its climb to 4.95%, the highest since 2023, before pulling back slightly. The 30-year rose to 5.34%. Both moves ran counter to the operation’s stated purpose, and the reaction from bond investors was less a verdict on the mechanics than on the size: markets that had priced in a shock intervention of $7 billion to $10 billion concluded that $6 billion signaled a Treasury unwilling to commit at the scale the moment demanded.
An escalation that kept escalating
The buyback program has grown in stages. Treasury first doubled its liquidity-support operations from $2 billion to $4 billion per round in August, after Secretary Scott Bessent said the department had “many policy tools” and suggested operations could exceed $4 billion. On Sept. 9 it raised the maximum again to $6 billion, triple the typical size. Yields rose after each announcement. The 10-year climbed to 4.83% on the first day of the latest announcement, then to 4.85% the next, then to nearly 4.98% on Friday before easing.
Bessent defended the approach in a speech earlier in the week, saying he does not believe Treasury yields reflect the underlying fundamentals of the U.S. economy and that his job is to “speed things down” and ensure markets know things may not be on “a one-way trip.” He noted American bonds had outperformed many other sovereign markets.
Why the market shrugged
The fundamentals pressing on the bond market are larger than any buyback. Federal debt has passed $40 trillion. Treasury issuance is running 11.8% above last year’s pace. Inflation expectations have been revived by tariffs and by the Iran war’s effect on energy prices, with Thursday’s producer price data showing wholesale inflation at 5.4% and Brent crude above $101 a barrel. Heavy corporate borrowing to fund the AI buildout competes for the same investor capital. Against that backdrop, a $6 billion operation amounts to roughly 0.01% of outstanding Treasury debt, a figure market participants cited to explain why the purchase could not offset the trend no matter how it was sized.
The same day brought a poor auction of 30-year bonds, compounding the pressure. Stocks fell for a fourth straight session, with the Dow off 0.7%, the S&P 500 down 0.6% and the Nasdaq down 0.6%. Odds of a Federal Reserve rate hike at the Sept. 16 meeting jumped to about 70% after the inflation data, up from 61% a day earlier, according to CME FedWatch.
| Operation | Size | 10-year yield after |
|---|---|---|
| Standard buyback (pre-August) | $2 billion | rising through August |
| Doubled (August) | $4 billion minimum | 4.81% |
| Tripled (Sept. 9) | $6 billion maximum | 4.83% |
| Executed (Sept. 10) | $5.19 billion | 4.95%, then near 4.98% |
The critics line up
Stanley Druckenmiller, the billionaire investor who served as an early mentor to Bessent, argued in a Wall Street Journal op-ed that the strategy is a mistake on its own terms. “Once markets believe Treasury is defending a price, every rise in yields becomes a test of official resolve, and the operations must grow to survive the tests,” he wrote. “Governments defending prices against fundamentals always lose. The only variable is how much they spend before conceding.”
Matt Cole, CEO of Strive Asset Management, put it more bluntly in a Fox Business interview: “The market’s calling a bluff because these buybacks are very small sizes.” He added that the problem will not be fixed by raising the size from $6 billion to $12 billion. Morgan Stanley estimated the maximum feasible buyback at around $10 billion. Deutsche Bank strategists suggested Treasury had “created a monster it must keep feeding.”
Not everyone sees failure. Some fixed-income analysts argue the program provides a liquidity backstop rather than a price defense, giving the market confidence without solving the underlying fiscal imbalance. Ed Al-Hussainy, portfolio manager at Columbia Threadneedle, warned that if the Fed does not hike next week, long-dated yields could become “unanchored” and move more disorderly, and that Treasury and the Fed would likely be more concerned about financial stability than about any single auction.
There was one reprieve. Reuters reported the 10-year pulled back from 5% on Friday, a small win for Bessent after two days of counterproductive moves. But the structural picture is unchanged: oil near $100 keeps inflation expectations elevated, the Fed is likely to raise rather than cut, and the Treasury must keep issuing into a market that has just demonstrated what it thinks of official intervention at this scale.
For borrowers, the consequences are already visible in mortgage rates and corporate bond pricing. For the Treasury, the lesson of the week is narrower and sharper: at 0.01% of the debt, buybacks can signal intent, but they cannot move a market this size against fundamentals. The next quarterly refunding announcement is due Nov. 4, and with it a decision on whether the program grows again.