South Korean stocks finished slightly higher Monday ahead of key economic data to be released later this week, ending a four-day losing streak. The local currency gained ground against the US dollar. The benchmark Korea Composite Stock Price Index advanced 9.2 points, or 0.36 percent, to finish at 2,556.88. Trading volume was moderate at 406.6 million shares worth 8.21 trillion won ($6.17 billion), with gainers outpa...