The South Korean government has rolled out aggressive market stabilization measures to calm bond market turmoil triggered by the Middle East crisis. It will conduct emergency buybacks — early redemptions of government bonds — totaling 5 trillion won ($3.6 billion) in two rounds on the 27th of this month and the 1st of next month. Part of the funding for a supplementary budget currently being drawn up at around 25 trillion won will also be used for net redemption of government bonds. Analysts say the preemptive response came as sovereign bond yields surged on external shocks despite solid economic fundamentals.
The Ministry of Economy and Finance (MOEF) announced the "Bond Market Stabilization Plan" on the 26th. The emergency buybacks will target short-term maturities including 2-year and 3-year notes, which have seen elevated volatility recently, as well as 5-year, 10-year, and 20-year medium- and long-term bonds.
A buyback is a form of early redemption in which the government repurchases already-issued government bonds from the market before maturity. It supports bond prices and eases upward pressure on yields by reducing the volume of bonds in circulation. In this case, it means the government will purchase large quantities of bonds within a short period.
The government decided on emergency buybacks because it judged the recent spike in yields to be excessive relative to the economy's fundamentals. The 3-year Korea Treasury Bond (KTB) average yield recently topped 3.55 percent, surging roughly 50 basis points from levels before the U.S.-Iran war broke out. The sharp rise has been attributed to inflation fears fueled by an oil price shock, compounded by quarter-end liquidity tightness and stop-loss selling.
The last time the government carried out an emergency buyback was in September 2022, during the tail end of the COVID-19 pandemic, at a scale of 2 trillion won. The current operation is the largest among the four emergency buybacks conducted since 2021.
The government will also pursue bond redemptions using surplus tax revenue. The exact scale will be determined through Cabinet and National Assembly deliberations. Since the enactment of the National Finance Act in 2006, the government has pursued net redemption of government bonds in all supplementary budgets funded by surplus tax revenue — in 2016, the second round of 2017, the second round of 2021, and the second round of 2022 — with the exception of 2017. While emergency buybacks temporarily reduce bonds in circulation, net redemption structurally lowers the ceiling on deficit bond issuance, making it a positive signal for the market.
"The emergency buyback and the plan for net bond redemption using surplus tax revenue represent the authorities' strong commitment to stabilizing the government bond market," said Kong Dong-rak, a researcher at Daishin Securities. "It also carries the intent of correcting the unstable trend in the bond market ahead of Korea's inclusion in the World Government Bond Index (WGBI) next month."
Markets have responded positively to the measures. The scale of the emergency buyback exceeded expectations, and the execution timeline was moved up to immediately after the announcement, reflecting the authorities' strong resolve. While inflation concerns and an elevated exchange rate stemming from a prolonged Middle East crisis remain sources of market anxiety, from a supply-demand perspective, a series of events that could restore investor sentiment are lined up.
Starting in April, global funds are likely to flow in sequentially following the WGBI inclusion. WGBI-linked capital, classified mainly as medium- to long-term passive funds, is called "top-grade capital" because once it enters, it rarely leaves. The market estimates that WGBI inclusion will bring in between $56 billion and $70 billion. A senior MOEF official said, "The pace of WGBI fund inflows may vary due to the recent Middle East situation and the elevated exchange rate," adding, "Given the passive nature of index-tracking funds, we expect capital to flow in gradually."
The government also plans to launch a "WGBI Fund Inflow Standing Monitoring Unit," headed by the MOEF's Director General of Treasury, in line with the WGBI inclusion. The unit will hold regular interagency meetings through November — when tracking funds are expected to flow in — to monitor capital inflows and devise measures to facilitate them.
Another positive factor is the potential for major semiconductor companies, which posted record earnings, to become major buyers in the government bond market to manage their retained cash safely. Samsung Electronics (005930.KS) held net cash of 94 trillion won as of the end of the first quarter of 2025, while SK hynix (000660.KS) holds approximately 90 trillion won in cash and equivalents as of end-2025. With commercial banks recently feeling burdened by the massive deposits from these companies, short-term 1- and 2-year KTBs are being cited as an alternative investment destination.
"In response to heightened financial market volatility caused by the Middle East situation and events such as the WGBI inclusion, the government will work closely with the Bank of Korea and other relevant agencies to manage the bond market in a stable manner," a MOEF official said.
