Seoul stocks surged Wednesday, led by gains in chipmakers and other big-cap tech shares, as hopes grew for a possible end to the U.S.-Iran conflict. The Korean won strengthened sharply against the U.S. dollar. The benchmark Korea Composite Stock Price Index (KOSPI) rose 426.24 points, or 8.44 percent, to 5,478.7, snapping a four-day losing streak. Wednesday's gain marked the second-largest increase ever, with the sharpest gain recorded on March 5 when the index jumped 490.36 points. Trade