KOSPI Rallies 2.5% as US Chip Sector Rebounds
South Korean equities opened sharply higher, driven by a overnight recovery in US semiconductor stocks and stabilizing Treasury yields.
The KOSPI index opened at 6,885.70 on the 18th, marking a 2.54% increase of 170.29 points from the previous session. This opening move reflects a direct reaction to overnight gains in New York, where the Nasdaq Composite rose 1.69% to 26,418.30 and the S&P 500 climbed 1.14%. The positive sentiment was fueled by a decline in the 10-year U.S. Treasury yield, which retreated to the 4.9% range after briefly topping 5%, alongside easing concerns over oil supply disruptions.
Investor flows in the domestic market shifted notably, with foreigners and institutions acting as net buyers after seven consecutive sessions of net selling. Other corporations also contributed to the buying pressure, a category that includes share repurchase programs by major players like Samsung Electronics and SK hynix. According to GN stocks/shares-surge, this reversal in flow dynamics helped support the index despite individual investors remaining net sellers. The broader market context includes a stabilization of macro uncertainty following the Federal Reserve's recent rate hike, which has reduced market sensitivity to high interest rates.
Semiconductor Leaders Drive Index Gains
Large-cap semiconductor manufacturers were the primary engine of the rally, with Samsung Electronics up 2.97% and SK hynix gaining 4.47%. These moves mirrored overnight performance in the U.S., where Micron rose 5.50% and SK hynix American Depositary Receipts climbed 4.64%. The Philadelphia Semiconductor Index also advanced 3.14%, indicating a sector-wide strength that translated directly into South Korean listings.
The positive momentum extended to related supply chain components. SK Square and Samsung Electro-Mechanics both recorded gains in the 3% to 4% range, benefiting from the broader demand for AI and semiconductor infrastructure. This sector-specific strength helped lift the majority of the top market capitalization stocks, reinforcing the index's upward trajectory during early trading hours.
KOSDAQ Follows Broad Market Recovery
The KOSDAQ index also opened higher at 832.72, up 1.28% from the previous close. While some biotechnology names like Alteogen slipped slightly, the gain was driven by semiconductor materials and equipment providers. Companies such as Jusung Engineering, LEENO Industrial, and Wonik IPS showed strength, aligning with the broader technological recovery observed in the main board.
Macro Stabilization Supports Investor Sentiment
The overnight U.S. session saw the Dow Jones Industrial Average close at 51,778.04, up 0.61%. This broad-based improvement in U.S. equities occurred despite the Federal Reserve raising its benchmark rate for the first time in over three years. The market interpreted the rate hike as a turning point for macro uncertainty, with oil prices falling on reports of a proposed truce between Saudi Arabia and Houthi rebels. This combination of factors reduced volatility risks, allowing equity markets to focus on fundamental earnings rather than geopolitical or monetary shocks.
