RESEARCH
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The Treasury Tripled the Size of Its Buybacks
The federal government owes just over $40 trillion, and Treasury has tripled the size of a long-end bond buyback operation as borrowing costs rise.

Jacob Radke
2 min read

Dealer offers, Treasury purchases, and per-operation maximums for 23 long-end liquidity-support buybacks from January 8 through September 10, 2026.
Source · U.S. Treasury Fiscal Data, Treasury Securities Buybacks
Federal debt outstanding
$40.074T
Total public debt as of September 9, 2026.
FY2026 interest expense
$1.268T
Eleven months through August 31, 2026.
September 10 buyback
$5.187B
Accepted against a $6 billion long-end operation cap.
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Key takeaways
Total public debt stood at $40.074 trillion on September 9, 2026; $32.389 trillion was held by the public.
Fiscal-year-to-date interest expense reached $1.268 trillion through August, covering eleven months of fiscal 2026.
Treasury accepted $5.187 billion in 10- to 20-year securities on September 10 against a $6 billion cap, the program’s largest long-end operation.
The federal government owes just over $40 trillion with interest on that debt at $1.27 trillion over the last eleven months.
And those numbers continue to grow as the 30-year Treasury yield climbed to its highest level since 2007.
The Treasury’s current answer to that problem is to start buying its own high-interest long-term bonds back in larger quantities.
By buying these long-term bonds back, it can attempt to lower long-term costs by driving interest rates down and refinancing in the short term with Treasury bills, then, as that short-term debt matures, refinance again at lower long-term rates.
Prior to last week, the Treasury could buy up to $2 billion worth of bonds at a time. Treasury Secretary Scott Bessent increased that limit to $6 billion, and on September 10 bought $5.2 billion worth of long bonds in a single afternoon. It was the largest long-end buyback in the program’s history.
Stanley Druckenmiller thinks this is the wrong tool for the problem. In a Wall Street Journal op-ed in August, he argued the 30-year is not high because the bond market is broken. It is high because the government is borrowing an enormous amount and lenders want to be paid for it. A buyback does not change the borrowing. He wrote, “If the 30-year must trade at 5.5% to clear, that isn’t a crisis. It is an invoice.”
Until next week,
Jacob
Sources & method
Federal debt outstanding: U.S. Treasury Fiscal Data, Debt to the Penny, September 9, 2026.
Interest expense: U.S. Treasury Fiscal Data, Interest Expense on the Public Debt, fiscal year to date through August 31, 2026.
Buyback operations: U.S. Treasury Fiscal Data, Treasury Securities Buybacks, January 8 through September 10, 2026.
Treasury yield history: U.S. Treasury daily par yield curve rates.
Druckenmiller argument and quoted line: Stanley F. Druckenmiller, ‘Let the Bond Market Speak,’ The Wall Street Journal, August 24, 2026.
Written by

Jacob Radke
Partner, Wealth Advisor
Jacob writes the weekly charts. Jacob leads the firm’s platform, including trading, research, portfolio systems and technology. He also sits on the firm’s board and investment committee, and advises client families.
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