South Korea’s Kospi plunges 12% putting it on track for its worst day in decades as Iran conflict rages
South Korea’s Kospi plunged over 12% Wednesday, putting it on track for its worst day in decades, and extending a steep sell-off from the previous session amid an escalating war in the Middle East.
The Korea Exchange temporarily halted trading for the Kospi index on Wednesday. A circuit breaker was also activated on the Kosdaq, which also fell about 13%.
Kospi index heavyweights SK Hynix and Samsung Electronics fell 5% and 7%, respectively.
The South Korean market had been on a tear last year, soaring more than 75%, and extending gains into the new year as well, with the Kospi hitting new highs on the back of chip heavyweights that have seen their shares surge on strong memory chip demand.
“The decline in the KOSPI can broadly be attributable to the single-name concentration that we see in the Korean markets,” said Morningstar’s Asia director of equity research, Lorraine Tan.
According to Morningstar data, memory leaders Samsung and SK Hynix constitute almost 50% of index.
“We believe that the drop in share prices is partly driven by profit taking after a strong runup amidst a risk-off environment but also implies growing concern that the AI datacenter adoption pace might slow due to its significantly higher energy costs than regular datacentres.”
I guess the AI bubble in South Korea is either popping or deflating.

