KOSPI Rises 2% on Samsung and SK Hynix Gains

Samsung Electronics and SK hynix led a broad rally in Seoul, driving the KOSPI up 2.02% as global AI optimism boosted sentiment.
Key points
- KOSPI index rose 2.02% to 7,149.3, led by a 2.55% gain in Samsung Electronics and a 3.21% increase in SK hynix.
- Samsung Electro-Mechanics surged 6.58%, outperforming the broader market as demand for AI-specific electronic components accelerated.
- The Korean won strengthened by 4.9 won to 1,369.6 against the US dollar, aided by falling global oil prices and softening US Treasury yields.
South Korean equities opened sharply higher on Tuesday, with the benchmark KOSPI index gaining 141.58 points to reach 7,149.3 by 9:15 a.m. This 2.02% increase was driven primarily by strong performance in the semiconductor sector, following a record closing session for the US Nasdaq Composite and a general decline in global bond yields.
The rally in Seoul mirrored overnight gains in US markets, where the Nasdaq rose 2.3% and the S&P 500 climbed 1.5%. According to The Korea Herald, investor sentiment improved significantly due to a broad surge in artificial intelligence-related stocks and falling oil prices, which reduced inflationary pressure and supported growth-oriented tech valuations.
Chipmakers lead index recovery
Samsung Electronics, the largest company by market capitalization in Korea, advanced 2.55% in early trading. Its electronics component affiliate, Samsung Electro-Mechanics, saw a more pronounced jump of 6.58%, reflecting strong demand for specialized hardware components within the broader AI supply chain.
SK hynix, a major memory chip producer, gained 3.21%, while its parent company SK Square rose 3.02%. These gains indicate that investors are positioning for continued growth in high-bandwidth memory and other critical semiconductor products essential for AI infrastructure deployment.
Macroeconomic factors support sentiment
The strengthening of tech stocks coincided with a softening in US Treasury yields and a drop in global oil prices. These macroeconomic shifts lowered the discount rate for future cash flows, making long-term growth assets like semiconductors more attractive to institutional investors seeking yield in a volatile market.
Currency markets also reflected the improved risk appetite, with the Korean won appreciating by 4.9 won against the US dollar to trade at 1,369.6. This stronger currency position supports import-heavy tech firms by reducing the cost of foreign components and equipment, further bolstering the business case for domestic chipmakers.
Global AI demand drives momentum
The core driver of this movement remains the renewed optimism surrounding artificial intelligence. As US tech indices hit new highs, the correlation between global AI spending and Korean semiconductor exports has strengthened. Companies that supply critical hardware for AI data centers are seeing their earnings outlooks revised upward, directly translating to higher share prices in Seoul.






