AI regulation concerns hit Japanese and South Korean markets. Japan's Nikkei 225
closed down 1,110.73 points, down 1.79 pct, at 61,077.90. South Korea's KOSPI
closed down 300.15 points, down 5.28 pct, at 5,383.65; KOSDAQ fell 5.11 pct,
triggering intraday sidecar mechanisms and pausing program trading. SK Hynix
fell 9.45 pct and Samsung Electronics fell 7.56 pct.