South Korean stocks closed 0.25 percent lower Monday as investors were awaiting the first-quarter corporate earnings results, analysts said. The local currency fell against the U.S. dollar. After trading in a tight range, the benchmark Korea Composite Stock Price Index (KOSPI) fell 5.06 points to 1,999.22. Trading volume was light at 201.2 million shares worth 2.2 trillion won (US$2.12 billion), with losers outnumbering gainers 470 to 331