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.
Glencore has production facilities around the world and supplies metals, minerals, crude oil, oil products, coal, natural gas and agricultural products to international customers in the automotive, power generation, steel production and food processing industries. The company was formed in 1974 by a management buyout of Marc Rich & Co AG.
Glencore listed on the London Stock Exchange in May 2011 and is a constituent of the FTSE 100 Index. It has a secondary listing on the Hong Kong Stock Exchange.