The benchmark KOSPI rose 0.2% to around 3,178 on Wednesday, extending gains for a second straight session, as strength in semiconductor shares and fresh policy support lifted sentiment. SK Hynix, the country's second largest chipmaker, advanced after announcing the adoption of ASML’s High Numerical Aperture EUV lithography system at its M16 plant, a first in the industry, bolstering expectations for next-generation memory development amid rising AI demand. Samsung Electronics also gained, helping the tech sector drive the rebound following heavy losses in prior sessions. In addition, the government unveiled a KRW 570 billion emergency support package for steel and aluminum firms hit by the 50% US import tariffs. This includes low-interest loans and expanded volume of trade insurance, easing concerns over export competitiveness. Among major movers, SK Hynix rose 0.7%, Samsung Electronics gained 0.2%, and Doosan Enerbility climbed 3.2%, while HD Hyundai Heavy Industries slipped 2%.