KOSPI has risen roughly 144 percent over the past eight months, but the gains have been concentrated in a handful of memory names. The broader mark...

South Korea’s KOSPI staged a sharp recovery on Wednesday morning, surging 4.1% in the first 30 minutes of trading after a nearly 10% plunge a day earlier, as retail investors…

KOSPI has risen roughly 144 percent over the past eight months, but the gains have been concentrated in a handful of memory names. The broader mark...