The investment seeks to have the daily changes in percentage terms of the fund's NAV per share reflect the daily changes in percentage terms of a weighted average of the closing settlement prices for the three soybean futures contracts. The fund invests normally in Benchmark Component Futures Contracts or in certain circumstances, in other Soybean Futures Contracts trade on the CBOT or on foreign exchange. It may also invest in exchange-traded options on soybean futures contracts and in soybean-based swap agreements that are cleared through the CBOT or its affiliated provider of clearing services in furtherance of the fund's investment objective.