The KOSPI index in Seoul jumped more than 5% on Thursday, briefly reclaiming the 9,000-point level as investors rushed into semiconductor stocks.
The broad market rally was anchored by a wave of buying in the technology sector, lifting the benchmark to its highest level in months.
The surge was triggered by a stronger-than-expected earnings report from US memory chipmaker Micron Technology.
The positive sentiment from Micron’s results rippled through South Korean equities, with investors piling into domestic semiconductor peers that benefit from the same high-bandwidth memory (HBM) demand cycle.
This repricing highlights the continued sensitivity of Asian markets to US tech earnings, particularly in the memory and foundry segments.
The rally underscores how Micron’s performance serves as a key barometer for the broader semiconductor supply chain, influencing sentiment across global chipmakers.