The Funds investment strategy is based in part on the Bloomberg Commodity Index, which is designed to be a highly liquid and broad benchmark for commodities futures investments. The COMB Benchmark provides broad-based exposure to commodities as an asset class, since no single commodity or commodity sector dominates the COMB Benchmark. The weightings of the components of the COMB Benchmark are based on liquidity data, which is the relative amount of trading activity of a particular commodity; production data, which measures the importance of a commodity to the world economy; and diversification rules that attempt to reduce disproportionate weightings of any single commodity. Rather than being driven by micro-economic events affecting one commodity market or sector, the COMB Benchmark is comprised of futures contracts on a broad basket of underlying commodities, which potentially reduces volatility in comparison with narrower commodity baskets.