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The reasons why commodities are separated into different types are the following: it is easier to compare prices, it is easier to research them and it is more convenient for trade.
There also exist other commodity classifications. In several sources you can find 4 categories of trading commodities:
- energy (examples: crude oil, natural gas, gasoline, solar power)
- metals (examples: iron, zinc, aluminium, including precious metals)
- livestock and meat
- agricultural products (fruits, vegetables, cereals, coffee, cotton, sugar)
In some classifications there is also a 5th commodity type – financial commodity, which refers to financial products such as currency or stock and bond indexes.
Commodities are bought, sold and traded on commodity markets. A commodity market represents a physical or online marketplace for buying, selling and trading raw or primary products. Commodity exchanges play a vital role to the economy, making it much more efficient.
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