Korean Bond Yields Fall Led by 3-Year as Institutions Reverse Oil Selloff

Korean government bond yields moved lower on the 7th, led by the short end, as domestic institutional buyers reversed an early session selloff triggered by Hormuz Strait uncertainty and a 2% rise in international oil prices. The benchmark 3-year Korea Treasury Bond (KTB) yield fell 1.3 basis points to 3.732% by 11:04 a.m., while the 10-year yield edged 0.5bp higher to 4.198% and the 30-year yield ticked up 0.1bp to 4.519%, according to Seoul bond market data. Foreign investors extended their net buying streak in 3-year bond futures, purchasing 2,063 contracts on the day, providing support as the market shifted from weakness to strength during the morning session. Dealers attributed the turnaround to domestic institutions adding long positions after the 3-year yield had dropped into the 3.6% range two days earlier on heavy foreign buying. The intraday dynamics unfolded against the backdrop of a non-competitive subscription option deadline for 30-year bonds and market expectations that the absence of consecutive rate hikes in August will sustain the current tone.

Market Reverses from Oil-Driven Weakness to Institutional Buying Strength

The Seoul bond market opened weak as overnight gains in international oil prices — which rose more than 2% — pushed U.S. Treasury yields higher. The 10-year bond futures contract initially fell more than 30 ticks in early trading. However, the absence of fresh catalysts during the morning session allowed the market to pare losses. The 3-year bond futures contract turned positive at 9:30 a.m., rising 5 ticks to 103.44, while the 10-year contract briefly showed strength after 10:30 a.m. before closing 3 ticks lower at 106.51. Dealers observed that domestic institutions were actively building long positions, viewing the modest yield backup as an opportunity to add exposure after the sharp rally two days prior.

Foreign Investors Net Buy 2,063 Contracts of 3-Year Futures

Foreign investors net purchased 2,063 contracts of 3-year bond futures on the 7th, extending a multi-day buying streak that has provided consistent support to the short end of the curve. Intraday, foreign net buying volume exceeded 6,000 contracts at one point during the session. In contrast, foreign investors net sold 349 contracts of 10-year bond futures. A bond dealer at a securities firm said, "Domestic institutions feel they have been underweight longs and are continuing to fill that gap. With the non-competitive subscription option deadline for 30-year bonds today, there may be additional efforts to build positions."

Dealers Cite Long-Building and August Rate Outlook

Market participants attributed the intraday reversal to a broader shift in positioning. "The short end has stabilized, and that gives some breathing room," a bond dealer at another securities firm said. "As long as there are no consecutive rate hikes in August, the current tone should hold." U.S. Treasury yields traded in a narrow range during Asian hours. Dealers expect supply-and-demand dynamics to continue driving price action through the afternoon session, with the 30-year non-competitive subscription deadline adding a near-term technical factor.

FAQ

What caused Korean bond yields to fall on the 7th?
Korean government bond yields fell on the 7th as domestic institutional buyers reversed an early selloff triggered by Hormuz Strait uncertainty and a 2% rise in international oil prices. The 3-year yield dropped 1.3 basis points to 3.732% by mid-morning, supported by foreign investors who net purchased 2,063 contracts of 3-year bond futures.

Why did the market reverse from weakness to strength during the session?
The market reversed as no fresh negative catalysts emerged during the morning and domestic institutions actively added long positions. Dealers noted that institutions viewed the modest yield backup as an opportunity to build exposure after the 3-year yield had fallen into the 3.6% range two days earlier on heavy foreign buying.