KOSPI closes 3.7 percent lower as chip selloff deepens

KOSPI closes 2.6 percent lower as Samsung earnings fail ...
KOSPI closes 1.98 percent lower as bond yields pressure ...
KOSPI closes 0.89 percent lower as chip stocks lose ground ...
KOSPI closes 0.89 percent lower as chip stocks retreat
KOSPI closes 0.89 percent lower as chip stocks lose ground ...