South Korea's Kospi index dropped 6 percent, led by declines exceeding 7 percent at Samsung Electronics, 9 percent at SK Hynix, and 10 percent at SK Square. The moves followed overnight losses in U.S. semiconductor shares including a more than 10 percent drop in Micron Technology. Available reporting from two left-center sources attributes the declines to broader Nasdaq weakness without citing specific earnings or demand data.