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KOSPI triggers sell sidecar after over 5 percent plunge; Samsung Electronics, SK Hynix fall

South Korea\'s KOSPI fell more than 5 percent soon after the open on Tuesday, triggering a sell sidecar that temporarily halted program sell orders on the main board. As of 9:09 a.m., the index was down 381.32 points, or 5.64 percent, at 6,374.43. Foreign investors and institutions were net sellers, while retail investors bought. Samsung Electronics and SK Hynix fell, while Samsung Biologics rose.