The First Trust California Municipal High Income ETF's primary investment objective will be to seek to provide current income that is exempt from regular federal income taxes and California income taxes, and its secondary objective will be long-term capital appreciation. Under normal market conditions, the Fund seeks to achieve its investment objectives by investing at least 80% of its net assets (including investment borrowings) in municipal debt securities that pay interest that is exempt from regular federal income taxes and California income taxes (collectively, "Municipal Securities").