The investment seeks to track the investment results (before fees and expenses) of the ICE BofAML California Long-Term Core Plus Municipal Securities Index. The fund generally will invest at least 80% of its total assets in the components of the index. The index is composed of U.S. dollar-denominated, tax-exempt municipal debt publicly issued by California or any U.S. territory and their political subdivisions, in the U.S. domestic market. It is non-diversified.