코스닥 4 급락에 27개월 만의 최저…코스피 2,020대 후퇴br br Korea's tech-heavy KOSDAQ on Monday closed at 618-point-78 points, the lowest in more than two years.br The secondary bourse lost 25-point-81 points, or four percent, from the previous session,... as individual investors sold off around 591-thousand dollars worth of stocks.br Experts say the massive sell-off on the tech-heavy index reflects concerns about external uncertainties amid Korea's ongoing trade spat with Japan.br The benchmark KOSPI also closed down on Monday,... by one-point-78 percent,... finishing the session at a two-month low of two-thousand-29-point-48.