Small investor Ricardo Mendoza has been urging his Mexico City stockbroker for years to find a way for him to buy into the boom in Brazil’s Bovespa stock market. He has had little success. Without the know-how to move into more sophisticated cross-market products, Mendoza, like millions of other Latin Americans, is limited to the 80 or so companies that also list in New York to be able to diversify out of Mexican stocks. But with the region’s bourses pushing already record highs further into the stratosphere, Latin American stock exchange federation FIAB...
