The KOSPI index experienced a significant rise of 5.04%, closing at 5925.03, recovering the 5900 level for the first time since February 27. This marked the end to a period of substantial declines due to geopolitical tensions, particularly the Iran conflict, which had affected market confidence. The uptrend was notably led by major tech stocks, with Samsung Electronics regaining the 200,000 won mark amid indications of resilient demand in the semiconductor sector.

Samsung Electronics’ shares climbed by 7.53%, closing at 208,500 won, while SK Hynix surged by 8.87% to reach 1,056,000 won—both marking significant rebounds from their previous lows this month. The increase in the KOSPI was amplified by a `buy sidecar` mechanism that was triggered when the KOSPI200 futures rose over 5%, halting program trading temporarily, a mechanism indicating increased market volatility. Additionally, the construction sector saw the highest gains with an 8.12% rise, reflecting recovery in the domestic economy.

Overall, the market's upswing coincided with positive trends in U.S. markets, particularly in memory chip stocks like Micron Technology, which rose as well amid robust demand forecasts. The Korean won also strengthened against the U.S. dollar, seeing a drop in the exchange rate. However, market analysts remain cautious, watching for any new developments in international conflicts affecting the semiconductor supply chain and overall market sentiments moving forward.