U.S. Treasury Significantly Expands Buyback Operations in Response to Rising U.S. Bond Yields

摩根大通资管称美联储降息带来巨大机会
Published on: Sep 9, 2026
Author: Amy Liu

The U.S. Treasury’s move to triple the size of its government bond buybacks is both a direct response to liquidity problems in the bond market and a reflection of the pressure brought by rising long-term U.S. bond yields. However, the market did not give positive feedback after the announcement, and yields instead continued to rise, indicating that investors remain strongly cautious about long-term U.S. bonds.

The U.S. Treasury announced on Wednesday that it would buy $6 billion of U.S. government bonds through buyback operations, triple the size of regular buyback operations. The Treasury said the move is intended to improve liquidity in the U.S. Treasury market and maintain smooth market functioning. But against the backdrop of long-term U.S. bond yields having previously risen to levels rarely seen since before the 2008 global financial crisis, the sharp expansion of buybacks is also widely seen by the market as the Treasury’s latest attempt to “cool down” persistently rising U.S. bond yields.

According to information released by the U.S. Treasury, the buybacks mainly target outstanding 10-year and 20-year U.S. government bonds, with the actual operation to take place on Thursday. The entire buyback window lasts 20 minutes and will end at 2 p.m. U.S. Eastern Time. The $6 billion buyback size is triple that of regular operations and further fulfills U.S. Treasury Secretary Bessent’s earlier commitment to expand the U.S. bond buyback program. On August 19, Bessent announced that the Treasury would at least double the size of normal buybacks of outstanding U.S. bonds. As long-term U.S. bonds have recently faced sustained selling and yields have continued to climb, the Treasury ultimately expanded the size of a single buyback to three times the normal level, drawing close market attention.

Buyback Purpose and Market Background

From the official purpose, the U.S. Treasury’s bond buybacks are mainly used to improve the liquidity of old bonds and enhance the operating efficiency of the Treasury market. As new bonds continue to be issued, trading activity in some earlier-issued government bonds may decline. By buying back these securities from the secondary market, the Treasury can improve the liquidity of bonds of the relevant maturities. However, the timing of this operation is particularly sensitive. Recently, long-term U.S. government bond yields have continued to rise and at one point touched levels not seen since before the 2008 global financial crisis. Therefore, the market also generally views the Treasury’s expansion of buybacks as one of the measures intended to curb a further rapid rise in U.S. bond yields.

Market Reaction and Follow-Up Observation

However, after the Treasury announced the news, the bond market did not immediately move in the direction policymakers might have hoped. On Wednesday, U.S. government bond yields instead rose further, with the benchmark 10-year U.S. bond yield once rising to 4.841%, up nearly 4 basis points on the day. Bond yields move inversely to prices, meaning that after the Treasury announced the expanded buybacks, the U.S. bond market still faced selling pressure.

The actual $6 billion buyback on Thursday will become an important window for market observation. After the Treasury directly raised the buyback size to three times the regular level, investors will closely watch the actual bidding situation and the market reaction of 10-year and 20-year U.S. bonds to judge whether this measure can truly improve liquidity and ease the pressure from the recent sustained rise in long-term U.S. bond yields.

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