"This ETF that seeks to track the price and yield performance, before fees and expenses, of the Deutsche Bank Liquid Commodity Index - Optimum Yield Agriculture Excess Return.

"The index is composed of futures contracts on corn, soybeans, sugar and wheat, some of the most liquid and widely traded agricultural commodities.

"There are many reasons to like DBA besides just its technical picture. First off, commodities are a great hedge against inflation.

"Second, many of the countries with the biggest demand for agricultural commodities are experiencing explosive growth. China, India and Brazil all are in hyper-growth mode, and that means demand for commodities is going to continue being very strong.

"In addition to the strong demand for these big four crops, we also know that the supply of these commodities is not growing fast enough to meet demand. According to some industry estimates, food inventories are currently at multi-decade lows.

"And what do you get when you have increasing demand and a decreasing supply? That's right, higher prices. The underlying index that this ETF tracks is now trading right at its 200-day moving average. There's been a pullback in DBA during the past several weeks, and that pullback has now given me the go ahead to buy DBA."

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