Long-term downtrend for the CRB Index
It currently is made up of 19 commodities as quoted on the NYMEX, CBOT, LME, CME and COMEX exchanges. These are sorted into 4 groups, each with different weightings. These groups are:
- Petroleum based products (based on their importance to global trade, always make up 33% of the weightings)
- Liquid assets
- Highly liquid assets
- Diverse commodities.
The index comprises 19 commodities: Aluminum, Cocoa, Coffee, Copper, Corn, Cotton, Crude Oil, Gold, Heating Oil, Lean Hogs, Live Cattle, Natural Gas, Nickel, Orange Juice, Silver, Soybeans, Sugar, Unleaded Gas and Wheat. The tenth revision of the index renamed it the Thomson Reuters/Core Commodity CRB Index, or TR/CC CRB.
https://en.wikipedia.org/wiki/Thomson_Reuters/Jefferies_CRB_Index
______________________________