South Korean stocks closed higher Thursday on strong gains by 'untact' businesses prompted by fears over a prolonged pandemic, analysts said. The Korean won stayed flat. The benchmark Korea Composite Stock Price Index (KOSPI) rose 9.02 points, or 0.42 percent, to close at 2,167.90. Trading volume was moderate at about 609 million shares worth some 12.8 trillion won ($10.7 billion), with losers outnumbering gainers 421 to 417. Foreigners sold a net 33 billion won, while retail investors purcha