South Korea's KOSPI rose 2.66% to close at 6,894.23 on September 18, briefly topping 6,900 as SK hynix gained 6.42% and Samsung Electronics rose 3.37%. Nvidia CEO Jensen Huang said he expects the company's chip sales volume next year to double from this year's level, reinforcing expectations for AI-driven memory demand amid reported semiconductor-equipment shortages. Foreign investors bought a net 419.4 billion won of KOSPI shares that day after eight sessions of selling, although they had sold more than 6 trillion won of Samsung Electronics and SK hynix shares over the five sessions from September 14 to 18 and shifted some capital into fiber-optics, power-grid and equipment stocks. The rally also drew support from lower U.S. Treasury yields, a pause in oil prices and stronger U.S. chip shares.