Treasury’s $5.2 Billion Buyback Fails to Halt Bond Market Selloff
The 10-year Treasury yield climbed to 4.96% on September 10, 2026, its highest point in roughly three years, as MarketWatch reported that Treasury Secretary Scott Bessent's first expanded bond-buyback operation and a weak 30-year auction combined to intensify, rather than calm, the market's ongoing rout.
A basis point equals one-hundredth of a percentage point. The 10-year yield rose 12 basis points on the day, while the 30-year Treasury yield climbed to 5.368%, and the 2-year yield reached 4.602%.
What the Buyback Program Was Supposed to Do
Bessent's Treasury Department had announced it would triple the per-operation cap on long-term bond buybacks from $2 billion to $6 billion, covering the 10-to-20-year and 20-to-30-year Treasury sectors, according to finance.biggo.com.
The expanded cap, effective September 9 through November 4, was designed to improve liquidity in older bond issues and reduce upward pressure on long-end rates.
The program itself was originally launched by former Treasury Secretary Janet Yellen in 2024. It reached $32 billion in total buybacks that first year and climbed to roughly $78 billion in 2025, according to finance.biggo.com.
Why Thursday's Operation Fell Short
The Treasury ultimately purchased only about $5.2 billion in long-dated bonds on Thursday, well below the announced cap.
Tom di Galoma, a managing director at Mischler Financial Group, told MarketWatch that the shortfall compounded trader disappointment from the prior day, when the Treasury had already underwhelmed markets by setting the cap at $6 billion rather than the larger figure many had anticipated.
Against a U.S. Treasury market with more than $32 trillion in outstanding debt, finance.biggo.com reported, Wall Street analysts described the buyback scale as negligible.
Outstanding 20-year and 30-year bonds alone total approximately $5.5 trillion, making per-operation purchases in the single-digit billions largely incapable of shifting supply-demand dynamics.
Market participants described Bessent's firepower in those terms, calling it inadequate for the scale of selling underway.
Di Galoma described conditions broadly, telling MarketWatch that sellers were active across maturities from 2-year to 30-year Treasuries simultaneously.
Oil and Inflation Add Pressure
Rising oil prices compounded the bond market stress. crude oil surge Crude oil futures rose more than 8% on the day, according to MarketWatch market data, reaching above $103 per barrel.
New wholesale inflation data released Thursday raised the probability that the Federal Reserve could hike interest rates at its next meeting.
Tim Horan, a fixed-income chief investment officer, told MarketWatch that borrowing costs are rising on a global basis, not just in the United States. He added that Thursday's market action showed the bond market itself, not the Treasury, is setting prices.
What Higher Yields Mean for Borrowers
For households, a 10-year Treasury yield approaching 5% matters because mortgage rates typically track that benchmark closely. When yields rise, so do borrowing costs on home loans, auto financing, and credit cards tied to variable rates.
The 30-year yield above 5.3% on September 10 represents a meaningful increase from levels seen earlier in 2026.
Bessent has publicly stated that his goal is not to reverse the equilibrium level of Treasury prices but to slow the pace of market swings, according to finance.biggo.com.