South Korean stocks ended lower Monday, led by big-cap tech losses, on mounting concerns over a global banking crisis despite the takeover of the troubled Credit Suisse. The local currency fell against the US dollar. The benchmark Korea Composite Stock Price Index shed 16.49 points, or 0.69 percent, to close at 2,379.2. Trading volume was slim at 339.75 million shares worth 5.97 trillion won ($4.55 billion), with gainers outpacing decliners 446 to 426. Foreigners shed a net 204.89 billion won wo