Glencore

Glencore International plc is an Anglo–Swiss multinational commodity trading and mining company headquartered in Baar, Switzerland and with its registered office in Saint Helier, Jersey. It is the world's largest commodities trading company, with a 2010 global market share of 60 percent in the internationally tradeable zinc market, 50 percent in the internationally tradeable copper market, 9 percent in the internationally tradeable grain market and 3 percent in the internationally tradeable oil market.