MMX Miner (Portuguese: MMX Mineração) is a mining and metal company, founded in 2005. The company its organized into two systems and one subsidiary. Those are the "MMX Corumbá" system, the "MMX Sudeste Mineração" system and the subsidiary "Minera MMX de Chile". Its operations are concentrated in Brazil and Chile. MMX is listed on BM&F Bovespa since 2006 and had borrowed US$ 504 million. Since 2009, they are listed on the Ibovespa index. The Chinese Iron company WISCO holds 21% of the stake in MMX and along with it its the controlling shareholders holds 65% of shares.