Strategy. Under normal circumstances, the Fund will, directly or indirectly, invest at least 80% of its assets in, or derive at least 80% of its income from, securities that are exempt from regular federal income tax and may subject the investors to alternative minimum tax. Utilizing a quantitative and tactical approach, the Fund implements a strategy that seeks to hold a diversified portfolio of primarily high-yield municipal open-end mutual funds, closed-end funds, or ETFs when various risk measurements show the high yield municipal bond markets are trending upwards, and municipal money market securities or funds when the high yield municipal bond markets are trending downwards. Depending on market conditions, the Fund may be invested: (i) primarily in high yield municipal bond … Show more… Under normal circumstances, the Fund will, directly or indirectly, invest at least 80% of its assets in, or derive at least 80% of its income from, securities that are exempt from regular federal income tax and may subject the investors to alternative minimum tax. Utilizing a quantitative and tactical approach, the Fund implements a strategy that seeks to hold a diversified portfolio of primarily high-yield municipal open-end mutual funds, closed-end funds, or ETFs when various risk measurements show the high yield municipal bond markets are trending upwards, and municipal money market securities or funds when the high yield municipal bond markets are trending downwards. Depending on market conditions, the Fund may be invested: (i) primarily in high yield municipal bond funds and other municipal fixed income funds with similar characteristics; (ii) primarily in short-term municipal money market fund securities; or (iii) a combination of (i) and (ii). The strategy can also invest in other fixed income assets classes such as, but not limited to, long-term, intermediate and short-term municipal funds and single state municipal funds. In performing its investment selection, the high-yield municipal asset class?s directional trends are evaluated using quantitative models and inputs. Though it intends to invest primarily in the securities identified immediately above, the Fund may invest in debt securities of any credit quality or maturity. In addition to high yield municipal bond markets, the Fund may also have exposure to the U.S. fixed income markets (including private debt) by investing up to 20% of its assets in other investment companies that are not municipal funds, including open-end mutual funds, ETFs, closed-end funds (including tender offer and interval funds and business development companies), and real estate investment trusts (?REITs?). The investment companies in which the Fund invests may invest in securities of any maturity or quality, including securities rated below investment grade. The Fund may invest in affiliated and unaffiliated investment companies. To seek greater investment exposure to the Fund?s strategies, the Fund has the ability under federal law to leverage its portfolio by borrowing money from a bank in the amount of up to one-third of its assets (which includes the borrowed amount). The Fund may invest directly or indirectly in various types of derivatives, including swap contracts as a substitute for making direct investments in underlying instruments or to reduce certain investment exposures. The Fund may borrow money to enter into swap contracts that may leverage the Fund?s portfolio to a significant degree . Show less