Seoul shares open higher on blue-chip gains GMT 04:00 2014 Tuesday, 15 April Last Updated: 05:17:37 GMT Seoul - Yonhap South Korean stocks started higher on Tuesday on gains in blue chips. The benchmark Korea Composite Stocks Price Index (KOSPI) rose 7.81 points, or 0.39 percent, to 2,004.83 in the first 15 minutes of trading.