The investment seeks to replicate as closely as possible, before fees and expenses, the price and yield performance of the Barclays Municipal High Yield Short Duration Index (the 'index'). The fund normally invests at least 80% of its total assets in securities that comprise the benchmark index. The index is composed of publicly traded municipal bonds that cover the U.S. dollar denominated high yield short-term tax-exempt bond market. It is non-diversified.