Commodity ETFs: What You Should Know By: ETF Trends February 07, 2010 at 04:00 AM EST Read More >> Related Stocks: Allstate Corp Ipath Commodity Index TR ETN PowerShares DB Agriculture Fund PowerShares DB Energy Fund PowerShares DB Oil Fund S&P GSCI Commodity-Indexed Ishares ETF United States Gas Fund iPath Dow Jones-Goldman Sachs Crude Oil Fund