Its benchmark is the Dow Jones UBS Commodity Index and it does not invest directly in commodity futures.

FORBES: One High-Yielding Commodity Play

The Dow Jones-UBS Commodity Index has seesawed since it plunged from its June 2008 peak, and is trending downward at the moment.

WSJ: The End of the Commodities Boom?

The Dow Jones-UBS Commodity Index is down 2.62% for the first half of the year, said John Prestbo, editor and executive director of the Dow Jones Indexes.

FORBES: 'QE3' Would Be The 'Most Bullish Factor' For Commodities -- Panel

Chart Analysis : The breakout in the Dow Jones UBS Commodity Index has initial targets at 165 with important resistance in the 170 area, which is the major 50% retracement resistance from the 2008 highs at 238.

FORBES: One High-Yielding Commodity Play