Latin America's three major stock markets closed mixed on Tuesday. Mexico City's IPC stock index closed down 0.05 percent to 33,399.46 points. A total of 200 million shares were traded with a volume of 522 million U.S.dollars. At the Buenos Aires stock market, the Merval index ended at 2,404.77 points, down 0.53 percent. The trade volume was 8.803 million dollars. In Sao Paulo, Latin America's biggest bourse, the leading Bovespa index finished at 69,959 points, up 0.03 percent. The trade volume reached 3.048 billion dollars. 