The investment seeks to track the investment results of the Bloomberg Barclays U.S. Fixed Income Balanced Risk Index. The underlying index measures the performance of the corporate and mortgage portion of the Bloomberg Barclays U.S. Universal Index while targeting an equal allocation between interest rate and credit spread risk. The fund generally will invest at least 90% of its assets in the component securities of the underlying index and in investments that have economic characteristics that are substantially identical to the component securities of the underlying index.