Glencore (GLNCY) is one of the leading commodity-producing companies in the world with a vast array of raw material mines and other sources of output. At the same time, the company is an aggressive trading house. Where Glencore does not own production, they often serve as a leading merchant providing financing, hedging, and trading services. The company also takes proprietary risk on the long and short side of commodity markets, at times.
Glencore is the successor company of Marc Rich and Company. The late Marc Rich was one of the leading commodities merchants