invest in securities, commodity ETFs are not regulated as investment companies under the Investment Company Act of 1940 in the United States, although their public offering is subject to SEC review and they need an SEC no-action letter under the Securities Exchange Act of 1934. They may, however, be subject to regulation by the Commodity Futures Trading Commission. The earliest commodity ETFs, such as SPDR Gold Shares and iShares Silver Trust , actually owned the physical commodity (e.g., gold and silver bars). Similar to these are (palladium) 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. China accounted for more than 60% of exchange-traded commodities in 2009, up from 40% the previous year. The global volume of ETCs increased by a 20% in 2010, and 50% since 2008, to around 2.5 billion million contracts.{{}} Over-the-counter (OTC) commodities derivatives Over-the-counter (OTC) commodities derivatives trading originally involved two parties, without an exchange. Exchange trading offers greater transparency and regulatory protections. In an OTC trade, the price is not generally made public. OTC commodities derivatives are higher risk but may also lead to higher profits. Between 2007 and 2010, global physical exports of commodities fell by 2%, while the outstanding value of OTC commodities derivatives declined by two-thirds as investors reduced risk following a five-fold increase in the previous three years. Money under management more than doubled between 2008 and 2010 to nearly $380 billion. Inflows into the sector totaled over $60 billion in 2010, the second-highest year on record, down from $72 billion the previous year. The bulk of funds went into precious metals and energy products. The growth in prices of many commodities in 2010 contributed to the increase in the value of commodities funds under management. Commodities exchange A commodities exchange is an exchange where various commodities and derivatives are traded. Most commodity markets across the world trade in