Strategy. The Fund is actively managed and will not seek to replicate the performance of an index. Under normal market conditions, the Fund invests at least 80% of its net assets in a diversified portfolio of municipal obligations, the interest on which is exempt from regular federal income tax. While these securities will be exempt from federal income taxes, a significant portion of these securities could be subject to the alternative minimum tax. The Fund normally invests in municipal obligations rated A or higher by S&P Global Ratings (S&P), Fitch Ratings (Fitch) or Moodys Investors Service, Inc. (Moodys)) or, if unrated, determined by the Sub -A dvisor to be of comparable quality at the time of purchase. The Fund may invest … Show more… The Fund is actively managed and will not seek to replicate the performance of an index. Under normal market conditions, the Fund invests at least 80% of its net assets in a diversified portfolio of municipal obligations, the interest on which is exempt from regular federal income tax. While these securities will be exempt from federal income taxes, a significant portion of these securities could be subject to the alternative minimum tax. The Fund normally invests in municipal obligations rated A or higher by S&P Global Ratings (S&P), Fitch Ratings (Fitch) or Moodys Investors Service, Inc. (Moodys)) or, if unrated, determined by the Sub -A dvisor to be of comparable quality at the time of purchase. The Fund may invest up to 30% of its net assets in municipal obligations rated BBB by S&P, Fitch or Moodys or, if unrated, determined by the Sub -A dvisor to be of comparable quality. For purposes of rating restrictions, if securities are rated differently by two or more rating agencies, the highest rating is used. The Fund may continue to hold securities that are downgraded (including bonds downgraded to below investment grade credit quality (junk bonds)) if the Sub -A dvisor believes it would be advantageous to the Fund to do so. With respect to its investments in municipal obligations, the Fund invests primarily in general obligation or revenue bonds. General obligation bonds are backed by the general revenue of the issuing municipality, while revenue bonds are supported by a specific revenue source, such as income from a toll road or sewer system. The Fund currently targets an average portfolio duration of approximately 2 to 4.5 years and an average weighted portfolio maturity of approximately 3 to 6 years but may invest in securities of any maturity or duration and may in the future alter its maturity or duration target range. The Fund may use various techniques to shorten or lengthen its dollar-weighted average portfolio duration, including the acquisition of municipal obligations at a premium or discount. A premium municipal obligation is priced above the stated face value of the municipal obligation (also known as par). During periods of rising interest rates, municipal obligations may be offered and traded at a discount, which is when the municipal obligation is priced below par. The portfolio managers generally will seek to enhance after-tax total return by actively engaging in relative value trading within the portfolio. The Sub -A dvisor defines relative value trading as taking advantage of price opportunities in the markets for municipal obligations by looking for market inefficiencies using the Sub -A dvisors assessment of creditworthiness of the issuer, analysis of an issuers revenue history and projections of revenues to be used as sources of repayment for the debt issue, the issuers credit strength as measured by rating agencies, economic growth prospects in the regional economy that may affect the issuer, and the pricing of new issue and secondary market municipal issues of comparable quality. The same factors are used to assist the Sub -A dvisor in making decisions to sell investments. With respect to 20% of its net assets, the Fund may invest in municipal obligations that are not exempt from regular federal income tax, direct obligations of the U.S. Treasury and/or obligations of U.S. Government agencies, instrumentalities and government-sponsored enterprises. The Fund may hold cash and may invest in cash equivalents and money market instruments with up to 20% of the Funds net assets. The Sub -A dvisors process for selecting municipal obligations for purchase and sale generally includes consideration of the creditworthiness of the issuer obligated to repay the obligation. In evaluating creditworthiness, the Sub -A dvisor considers ratings assigned by rating agencies and generally performs additional credit and investment analysis. The portfolio managers may sell a security when its credit quality declines, when the remaining maturity of a fixed-income security reaches a certain point or to pursue more attractive investment options. Show less