South Korean shares fall more than 4% on profit-taking

South Korean shares fell more than 4 percent, with the KOSPI dropping 393.46 points or 4.32 percent to 8,715.91, triggering a circuit breaker as investors booked profits in chipmakers. Samsung Electronics fell 4.24 percent while SK Hynix dropped 6.06 percent, and foreign investors net sold shares worth 2.8 trillion won (about 1.82 billion dollars).