Seoul stocks finished lower Tuesday due to weaker-than-expected earnings results by Samsung Electronics and overnight US stock losses. The local currency fell against the US dollar. The benchmark Korea Composite Stock Price Index dropped 0.61 percent, or 16.02 points, to 2,594.36. Trading volume was moderate at 313 million shares worth 8.98 trillion won ($6.65 billion), with losers outpacing gainers at 569 to 305. Institutions and foreign investors together sold a net 72 billion won, while retai