Seoul: South Korean bond yields experienced mixed movements on the morning of September 18, 2026, reflecting varied market conditions. The 1-year Treasury Bond yield rose slightly to 3.669%, up from the previous session's 3.666%, marking a change of 0.3 basis points.

According to Yonhap News Agency, the 2-year Treasury Bond yield decreased to 3.976% from 3.994%, indicating a decline of 1.8 basis points. Similarly, the 3-year Treasury Bond yield fell to 4.034% from 4.063%, showing a decrease of 2.9 basis points.

The 10-year Treasury Bond yield saw a significant drop, moving to 4.452% from 4.506%, a reduction of 5.4 basis points. In terms of monetary stabilization bonds, the 2-year Monetary Stabilization Bond yield slightly decreased to 3.990% from 3.995%, a change of 0.5 basis points.

Corporate bonds also reflected a downward trend, with the 3-year corporate bond (AA-) yield decreasing to 4.697% from 4.726%, marking a decline of 2.9 basis points. The fluctuations in bond yields may be attributed to varying market dynamics and investor sentiment.