Foreign investors have become net sellers of Korean stocks this year for the first time since the Seoul stock market opened up to them in 19-92. The Korean Stock Exchange said foreigners sold a net 2-point-9 trillion won or 2-point-4 billion dollars this year as of last Friday while buying a net 1-point-4 trillion won. On the Korean Stock Exchange ... the benchmark KOSPI closed at 691.38 down 18 over last week's close. Over-the-counter KOSDAQ finished at 49.14 down 2 point 6 percentage point.