The KOSPI index in Seoul jumped more than 5% on Thursday, approaching the 9,000 mark 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 levels not seen in recent weeks.
The surge followed a stronger-than-expected earnings report from US memory chipmaker Micron Technology.
Micron’s results provided a positive catalyst for the sector, signaling resilience in demand for memory chips despite broader tech market volatility.
The positive sentiment quickly spread to South Korean peers, which are heavily weighted in the index and closely tied to global memory cycles.
South Korean equities had been under pressure in recent sessions, but the Micron data helped reverse the trend.