South Korean stocks closed lower for the second consecutive day Friday amid concerns the US Federal Reserve may keep its benchmark lending rate higher for longer. The local currency climbed against the US dollar. The benchmark Korea Composite Stock Price Index had declined 6.84 points, or 0.27 percent, to finish at 2,508.13. Trading volume was moderate at 425.5 million shares worth 6.9 trillion won ($5.2 billion), with decliners outpacing winners 595 to 285. Individuals purchased a total of 206.