Commodity prices are influenced by several factors, including short-term catalysts and long term stimulus. Supply and demand often dictates short term prices, while factors such as future demand expectations and production decisions by the Organization of the Petroleum Exporting Countries (OPEC) can affect prices over the longer term. Supply and demand in the world oil markets are balanced through responses to price movements, with considerable complexity in the evolution of underlying supply and demand expectations.

Steve Hargreaves of CNN wr...


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