
AI-generated summary
Seoul stocks have declined for six straight sessions amid global risk-aversion driven by persistent inflation concerns and skepticism about the commercial viability of AI investments despite heavy spending.
Seoul stocks opened sharply lower Thursday, as concerns over the sustainability of artificial intelligence and hotter-than-expected inflation in the United States dampened investor sentiment.
After opening sharply lower, the benchmark Korea Composite Stock Price Index tumbled 348.47 points, or 5.8 percent, to 5,660.34 as of 9:15 a.m.
The sharp drop in the index triggered the country's bourse operator to issue a sell-side sidecar soon after the market opened.
Seoul stocks have continued their losing streak for the past six consecutive sessions.
Major stock indexes on Wall Street closed lower overnight amid growing inflation concerns and skepticism over whether the AI boom could live up to investors' expectations.
The S&P 500 shed 1.11 percent, and the tech heavy Nasdaq dipped 1.88 percent.
The US Consumer Price Index rose 0.6 percent in September from a month earlier, bringing the annual rate of inflation to 3.7 percent, above economics' expectations for a 3.6 percent increase.
Also, investors still remained skeptical about whether AI investment could generate expected returns.
Seoul's two chip giants moved in tandem with tech firms on Wall Street, with Samsung Electronics and SK hynix dipping over 6 percent and 8 percent, respectively.
Carmaker Hyundai Motor shed 4.31 percent, defense giant Hanwha Aerospace inched down 0.24 percent, and bio firm Celltrion retreated 1.39 percent.
The Korean won was trading at 1,343.3 won against the US dollar as of 9:15 a.m., down 1 won from the close of the previous stock trading session. (Yonhap)
AI outlook โ possibilities, not facts
The KOSPI may continue to face downward pressure in the near term if US inflation data remains hot and AI investment returns fail to meet expectations.
Likely ยท Within weeks
South Korean semiconductor stocks like Samsung Electronics and SK hynix may remain volatile until clearer signals emerge on AI-driven demand recovery.
Possible ยท Within months

The Ministry of Trade, Industry and Energy announced on the 15th that it held a roundtable launch ceremony at the LW Convention Center in Seoul to plan and discover the 'World Class 10 Wings Project', which fosters companies that lead the global market in the 10 promising fields of the future through the development of system-level super-gap technology led by mid-sized companies. We plan to provide support of 100 billion won for up to 5 years per project, and will confirm the top 10 candidate projects by the end of this year and support them sequentially.

Taihan Electric Wire announced that it signed a material supply contract worth 120 billion won between its headquarters and the U.S. subsidiary, as T.E.USA won a turnkey order for a local ultra-high voltage power grid project. This contract is evaluated as a basis for proving technological competitiveness in the U.S. power grid market and expanding orders for high value-added products such as HVDC and submarine cables in the future.
![[Interview] Chairman of the Gyeongnam Chamber of Commerce & Industry: โYou have to live in the local area so that the metropolitan area can also breatheโฆ Different corporate tax rates are needed.โ](/api/img?u=https%3A%2F%2Fimg.yna.co.kr%2Fetc%2Finner%2FKR%2F2026%2F10%2F14%2FAKR20261014164100052_01_i_P2.jpg&w=320&q=72&f=webp)
Choi Jae-ho, chairman of the Gyeongnam Chamber of Commerce and Industry, argued for differential application of corporate tax and earned income tax to small and medium-sized businesses in non-metropolitan areas, and stated that tax reform for balanced local development is essential for resolving overcrowding in the metropolitan area and revitalizing the local economy. The Non-Metropolitan Chamber of Commerce has been leading the legislative push since its launch in 2024, and related bills are currently being reviewed by the National Assembly Tax Subcommittee.

The South Korean won strengthened against the U.S. dollar on Wednesday following dovish remarks by Federal Reserve official John Williams, while foreign investors continued their share sell-off.

The '2026 Gyeonggi Startup Summit' hosted by Gyeonggi Province opened at the Suwon Convention Center on the 14th and began its two-day schedule. 162 domestic and foreign investment institutions and startups will participate to discuss attracting investment and business cooperation.

In the stock market on the 14th, SK Hynix closed for six consecutive trading days, falling nearly 2% amid continued net selling by foreigners. It rose with a backlash buying trend in the early hours of the day, but then turned downward and fell to the early 1.4 million won range, and Samsung Electronics closed at a flat price.