The benchmark Korea Composite Stock Price Index (KOSPI) climbed 373.89 points, or 5.54%, late Wednesday morning, marking a decisive reversal for South Korean equities.
The rally was fueled by aggressive buying from foreign investors, who targeted technology sector heavyweights that had faced selling pressure in the prior session.
This influx of overseas capital helped stabilize the market and extend gains into the late morning trade.
The sharp move highlights the sensitivity of the KOSPI to foreign flow dynamics, particularly in the semiconductor space.
After a sharp sell-off in technology stocks the previous day, bargain hunting emerged as a key driver, with individual investors also moving to buy the dip.
The combination of foreign institutional buying and domestic retail participation created a broad-based lift for the index, underscoring the sector's resilience despite recent volatility.