Seoul: South Korean bond yields saw a marked increase on September 11, 2026, across various treasury bonds and other securities. The yields for 1-year and 2-year treasury bonds rose to 3.560% and 3.920%, respectively, from their previous session levels, marking a change of 5.3 and 8.3 basis points.

According to Yonhap News Agency, the yield for the 3-year treasury bond increased by 8.4 basis points, reaching 4.014%. The 10-year treasury bond saw an increase of 8.7 basis points, bringing the yield to 4.540%. Both the 2-year monetary stabilization bond and the 3-year corporate bond (rated AA-) experienced a rise of 8.3 and 8.8 basis points, moving to 3.910% and 4.688%, respectively.

The 91-day certificate of deposit yield experienced a minor increase, rising by 1.0 basis point to reach 3.140%. These changes reflect shifts in the South Korean bond market as investors respond to various economic factors.