Where in the world can you get more than 11 percent from bonds since June and 41 percent from bank stocks this year, with inflation evaporating as the gross domestic product and currency strengthen? That would be Argentina, a financial integrity scofflaw for most of the past century, now bringing a bonanza to global investors. Since he was elected president …

If there’s a symbol of the breadth of the euro zone’s recovery, it’s Portugal. In 2011, it had to accept an international bailout on punishing terms. Today, three years after graduating from that program, growth and confidence have returned. As if to mark the achievement, S&P Global Ratings just raised Portugal’s sovereign rating to investment grade. This success is real—but …

Last week, the Commercial Aviation Corp. of China Ltd. (Comac) announced that the C919, China’s first homemade large passenger jet, had chalked up its 730th pre-order. Those numbers won’t necessarily make the Boeing Co. or Airbus SE quake; Boeing estimates Chinese airlines alone will require 5,420 new single-aisle planes by 2036. Ultimately, though, they could herald the end of global …