South Korea stocks plunge 8%, circuit breaker triggered as chip shares tumble

South Korea's benchmark KOSPI stock index KRX:KOSPI plunged more than 8% in early trade on Friday, triggering a circuit breaker as a sell-off led by chip and technology stocks pushed the index below the 5,000-point mark for the first time in nine months.The Korea Exchange (KRX) activated a 20-minut…