South Korean stocks surged more than 5 percent Wednesday, on a semiconductor rally boosted by the ongoing U.S. chip giant Nvidia's global artificial intelligence (AI) conference. The Korean won strengthened against the U.S. dollar. The benchmark Korea Composite Stock Price Index (KOSPI) closed up 284.55 points, or 5.04 percent, to 5,925.03. The index came under strong buying pressure from foreigners and institutional investors, triggering the Korea Exchange (KRX), the country's main bourse