Commodity market oil is traded through NYMEX under trading symbol HO. Purified terephthalic acid (PTA) is traded through ZCE in units of 5 tons with the trading symbol of TA. Ethanol is traded at CBOT in units of 29,000 U.S. gal under trading symbols AC (Open Auction) and ZE (Electronic). Precious metals currently traded on the commodity market include gold, platinum, palladium and silver which are sold by the troy ounce. One of the main exchanges for these precious metals is COMEX. According to the World Gold Council, investments in gold are the primary driver of industry growth. Gold prices are highly
Commodity market and (platinum). However, most ETCs implement a futures trading strategy, which may produce quite different results from owning the commodity. Commodity ETFs trade provide exposure to an increasing range of commodities and commodity indices, including energy, metals, softs and agriculture. Many commodity funds, such as oil roll so-called front-month futures contracts from month to month. This provides exposure to the commodity, but subjects the investor to risks involved in different prices along the "term structure", such as a high cost to roll. ETCs in China and India gained in importance due to those countries' emergence as commodities consumers and producers.