An
index owned by Reuters Plc, the U.K.-based data and news provider. The index is
calculated by the Commodity Research Bureau Inc. (CRB) and was first published
in 1957. The index comprises 17 commodities that are averaged using specific
months for the futures contracts. The 17 commodities are corn, soybeans, wheat,
live cattle, lean hogs, gold, silver, copper, cocoa, coffee, sugar, cotton,
orange juice, platinum, crude oil, heating oil, and natural gas.