| Many investors have used precious metals to hedge against weak monetary policies of central banks around the world. Other investors believe that you can't go wrong with "black gold," since the global demand for oil will eventually outstrip the available supply.
On these simple assessments, those who chose the PowerShares DB Precious Metals Fund have seen their selection rise 22% over the previous 12 months; those who selected the PowerShares DB Oil Fund have been rewarded with roughly 7% year-over-year...............................................Full Article: Source
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