Seoul: South Korean bond yields saw a decrease across several terms on June 30, 2026, with significant changes noted in both short-term and long-term treasury bonds. The bond market data reflects shifts in investor sentiment and economic conditions that are affecting yield rates across the board.

According to Yonhap News Agency, the 1-year Treasury Bond yield decreased by 0.6 basis points to 3.298% from the previous session's 3.304%. The 2-year Treasury Bond yield fell by 2.7 basis points, landing at 3.651% compared to the previous 3.678%. Similarly, the 3-year Treasury Bond yield experienced a drop of 3.0 basis points, closing at 3.703% from the prior 3.733%.

The longer-term 10-year Treasury Bond yield saw a noticeable decline of 5.3 basis points, adjusting from 4.144% to 4.091%. Among other securities, the 2-year Monetary Stabilization Bond yield decreased by 2.2 basis points to 3.644%, and the 3-year Corporate Bond (AA-) yield slipped by 2.1 basis points to 4.375%.

In contrast to these changes, the 91-day Certificate of Deposit rate remained stable at 2.920%, indicating no change from the previous session. This stability in the short-term CD rate contrasts with the adjustments seen across various treasury and corporate bond yields.

The shifts in bond yields are indicative of broader market dynamics and investor strategies, potentially influenced by economic indicators and central bank policies.