Latin America's three major stock markets ended lower on Wednesday. Mexico City's IPC stock index dropped 1.88 percent to 28,959.67 points. A total of 408 million shares were traded with a value of about 720 million U.S. dollars. At the Buenos Aires stock market, the Merval index closed at 2,023.36 points, down 1.67 percent. The trade volume was 15.747 million dollars. In Sao Paulo, Latin America's biggest bourse, the leading Bovespa index closed at 60,496 points, down 1.62 percent. The trade volume was 3.24 billion dollars. 