[Edaily Reporter KIM YOON-JEONG ] The KOSPI opened up more than 2% on the 13th but turned lower in the afternoon. Despite the shock of NVIDIA CEO Jensen Huang’s resignation overnight, the index surpassed the 5,500 mark early in the session, buoyed by expectations of growth in the artificial intelligence (AI) industry. However, it gave up all its gains in the afternoon as foreign investors turned to net selling. In contrast, the KOSDAQ is maintaining a gain of around 1%, driven by institutional buying.

According to MP Doctor on the 13th, as of 2:00 p.m. that day, the KOSPI was trading at 5,297.64, down 45.09 points (0.84%) from the previous trading day.
The index opened at 5,452.41, up 109.68 points (2.05%) from the previous trading day. It rose as high as 5,504.44 at one point during the session but later turned downward, falling below the 5,300 mark.
In the stock market, all three major investor groups—foreign investors, institutions, and individual investors—are showing a net selling bias. Foreign investors switched to net selling in the afternoon and have sold 407.2 billion won worth of shares. Institutions and individual investors are also net sellers, with 23.7 billion won and 15.2 billion won in net sales, respectively, bringing the total net selling by the three groups to 446.1 billion won.
Top-market-cap stocks are generally trading lower. SamsungElectronics(005930)is trading at 207,250 won, down 750 won (0.36%) from the previous trading day. SK hynix(000660)is trading at 1,211,000 won, down 43,000 won (3.43%). Both stocks reversed course from morning gains to losses.
In addition, SKSQUARE(402340)(-5.31%), SamsungElectroMechanics(009150)(-3.05%), SAMSUNG BIOLOGICS(207940)(-2.62%), and LG Energy Solution(373220)(-2.12%) are also down. On the other hand, KB Financial Group(105560)(4.35%), Samsung Life Insurance(032830)(2.60%), Celltrion(068270)(1.91%), HyundaiMotor(005380)(1.31%), and SamsungElectronics(1P)(005935)(0.39%) are rising.
Overnight, the New York stock market fell across the board amid the shock of NVIDIA CEO Jensen Huang’s resignation and pressure from rising international oil prices and U.S. Treasury yields. NVIDIA’s stock price plummeted by as much as 14% early in the session before paring its losses to close down 4.34%.
However, there were also signs of optimism that the management uncertainty at NVIDIA would not undermine the growth prospects of the AI industry as a whole. The fact that NVIDIA’s competitors, AMD and Broadcom, each rose by around 5% lent credence to the view that demand for AI semiconductors would likely be distributed among competitors rather than shrinking.
Kang Jin-hyuk, an analyst at Shinhan Investment Securities, noted, “The market is viewing the uncertainty stemming from NVIDIA’s CEO change separately from the broader uncertainty in the AI industry.”
Driven by these expectations, the domestic stock market also showed strength through the morning, led by large-cap semiconductor stocks. As SamsungElectronics and SK hynix rose in tandem, the KOSPI broke through the 5,500 mark during the session. However, as foreign selling intensified in the afternoon and large-cap semiconductor stocks turned lower, the index also shifted into negative territory.
Unlike the KOSPI, the KOSDAQ has maintained its upward trend. At the same time, the KOSDAQ index is trading at 704.96, up 8.43 points (1.21%) from the previous trading day. The index opened at 705.96, up 9.43 points (1.35%), rose as high as 725.81 during the session, and then gave back some of its gains.
In the KOSDAQ market, institutional investors are the only net buyers, with net purchases totaling 128.4 billion won. In contrast, retail investors and foreign investors are net sellers, with net sales of 96.6 billion won and 31.0 billion won, respectively.
Top-market-cap stocks are showing mixed performance. Alteogen Inc.(196170), the top-ranked stock by market capitalization, is trading at 177,400 won, unchanged from the previous trading day. ECOPRO CO., LTD(086520), ranked second, is trading at 72,800 won, up 400 won (0.55%).
In addition, Rainbow Robotics(277810)(8.68%), JUSUNG ENGINEERING Co.,Ltd.(036930)(1.45%), SIMMTECH Co., Ltd.(222800)(1.37%), EO Technics Co., Ltd.(039030)(1.36%), ECOPRO BM CO., LTD.(247540)(1.33%), and LEENO Industrial Inc(058470)(0.67%) are all on the rise. Conversely, HLB INC.(028300)(-1.87%), WONIK IPS Co.,Ltd.(240810)(-0.51%), and SAM CHUN DANG PHARM CO. LTD(000250)(-0.44%) are all declining.