Seoul: South Korean bond yields showed mixed movements during the morning session on December 19, 2025, with short-term yields experiencing increases while long-term yields witnessed a slight decline. The 1-year Treasury Bond yield rose to 2.553% from the previous session's 2.545%, marking a change of 0.8 basis points.

According to Yonhap News Agency, the 2-year Treasury Bond yield increased by 0.9 basis points, reaching 2.812% compared to the previous session's 2.803%. The 3-year Treasury Bond yield also experienced an uptick, moving up by 2.1 basis points to 2.988% from 2.967%.

In contrast, the 10-year Treasury Bond yield showed a decrease, dropping by 0.4 basis points to 3.308% from 3.312%. Meanwhile, the 2-year Monetary Stabilization Bond yield climbed by 1.8 basis points to 2.841%, up from the previous session's 2.823%.

Additionally, the 3-year Corporate Bond yield rated AA- increased by 1.4 basis points, moving to 3.498% from the previous 3.484%. This data indicates varying movements across different bond categories in the South Korean financial market.