Ratings shown are assigned by one or more Nationally Recognized Statistical Credit Rating Organizations ("NRSRO"), including Standard & Poor's, Moody's, and Fitch. The ratings are an indication of an issuer's creditworthiness and typically range from AAA or Aaa (highest) to D (lowest). When two or more ratings are available, the highest rating is used; and when only one is available, that rating is used. The Non-Rated category consists of securities that have not been rated by either S&P, Moody’s, or Fitch. Bonds with a credit rating of BB or lower are considered below investment grade and carry a higher risk of default than investment grade rated bonds. Credit quality, as rated by S&P, Moody's, or Fitch is an assessment of the credit worthiness of an issuer of the underlying security and not the Fund or its shares. Please note, the Fund itself has not been rated by an independent rating agency.