According to Yonhap Infomax, South Korea's 3-year government bond futures fell 3 ticks to 103.07 overnight on July 11 amid Iran-related concerns. The 10-year contract declined 24 ticks to 105.81. Trading volumes contracted significantly, with 3-year volumes dropping from 141 to 70 contracts and 10-year volumes falling from 38 to 30 contracts. Foreign investors net-bought 26 contracts of 3-year futures and 4 contracts of 10-year futures, while financial companies and retail investors switched to net-selling positions.
The declines came as U.S. President Donald Trump announced the end of a ceasefire with Iran, raising concerns about potential energy price spikes. U.S. Treasury yields rose broadly overnight, with 10-year and 2-year rates climbing 0.80 basis points and 2.70 basis points respectively, though the 30-year rate fell 0.50 basis points.