The investment seeks to provide investment results that, before fees and expenses, correspond generally to the total return performance of the ICE Exchange-Listed Fixed & Adjustable Rate Preferred Securities Index. In seeking to track the performance of the index, the adviser employs a sampling strategy. It generally invests substantially all, but at least 80%, of its total assets in the securities comprising the index. The index is designed to measure the performance of non-convertible preferred stock and securities that are functionally equivalent to preferred stock, including, but not limited to, senior and subordinated debt.