Shares of Samsung Electronics Co., the world's second-largest smartphone maker, jumped on Thursday after a court ruling in the Netherlands and news that Steve Jobs, the chief executive officer of Apple Inc., had resigned. Shares of Samsung Electronics were trading at 733,000 won (US$675.4) on the Seoul bourse as of 10:00 a.m., up 3.53 percent, after jumping more than 4 percent in early trading.