Kospi Rises 4% on Chip Stock Rally Despite Ken Griffin's AI Bubble Warning

South Korea's Kospi index surged over 4% on Wednesday to 5,772 points, driven by a recovery in memory chip stocks like Samsung Electronics and SK Hynix, which rose 7.3% and 8% respectively. The rally mirrored strong gains in US markets, where the Dow Jones climbed 530 points, as falling bond yields and oil prices boosted investor sentiment. However, billionaire hedge fund manager Ken Griffin warned that the AI sector is "certainly in a bubble," echoing concerns from Ray Dalio. The index remains below its 50-day moving average, forming a bearish flag pattern that could signal a pullback toward 5,272 support. South Korea's producer price index eased to 7.7% in September, ahead of the Bank of Korea's rate decision expected to hold at 3%.