Seoul: South Korean bond yields displayed a mix of slight increases and decreases across different maturities on the morning of August 20, 2026. The changes in yields reflect varying market responses to the latest economic conditions and investor sentiment.

According to Yonhap News Agency, the yield on the 1-year Treasury Bond (TB) rose slightly by 0.3 basis points to 3.399% from the previous session's 3.396%. The 2-year Treasury Bond saw a more pronounced increase, climbing 2.6 basis points to reach 3.669%, up from 3.643% in the previous session.

The yield on the 3-year Treasury Bond also increased, albeit modestly, by 1.8 basis points to 3.816%, compared to 3.798% in the prior session. Conversely, the 10-year Treasury Bond yield experienced a minor decrease of 0.2 basis points, settling at 4.335%, down from 4.337% in the previous session.

In the realm of Monetary Stabilization Bonds (MSB), the 2-year MSB yield increased by 2.0 basis points, moving from 3.705% to 3.725%. The 3-year Corporate Bond (CB) with an AA- rating saw its yield increase by 0.8 basis points, rising to 4.505% from 4.497%.

These changes in bond yields indicate a complex landscape for investors, as they weigh the potential impacts of domestic and global economic factors on the South Korean bond market.