Disputes between Mexico and the United States over the North American Free Trade Agreement are not new. In March 2009, after years of litigation, the US government abruptly suspended a pilot program that allowed Mexican truck drivers to deliver goods across the border. Mexico retaliated, imposing tariffs as high as 45 percent on $2.4 billion worth of US goods …

  Not-for-profit industries are hardly associated by most investors with rising returns. Not so in China, whose private-school sector has become initial public offering gold in Hong Kong. Two of the city’s five biggest IPOs so far this year have been of Chinese nonprofit school operators: China Yuhua Education Corp., which made its trading debut this week, and Wisdom Education …

  Bloomberg Aramco is the world’s largest oil company, but when it sells shares next year its foray into renewables is what may lure investors who would otherwise be forced to stay away. Saudi Arabian Oil Co., as it is formally called, is considering investments of as much as $5 billion in renewable energy, part of the kingdom’s effort to …