The Korea Stock Price Index (KOSPI) broke through the 2,000-point mark for the first time since April 2 at 12:15 Wednesday. At closing, the index was 2,001.20, up 14.98 points from the previous closing.
Investor sentiments were boosted by improvements in economic indexes in he United States.
Foreign investors injected 160.8 billion won (about $150 million) with private and institutional investor working on par.
Most of the blue chips fared well, with Samsung Electronics climbing up 1.08 percent and Hyundai Motor 1.69 percent.