The fund seeks to maintain an average portfolio quality minimum of A, based on ratings given to the Portfolio's securities by any nationally recognized statistical rating organization. It may invest up to 25% of its total assets in fixed-income, non-U.S. Dollar denominated foreign securities, and may invest without limit in fixed-income, U.S. Dollar denominated foreign securities, in each case in developed or emerging-market countries. The fund seeks to maintain an effective duration of three to seven years under normal market conditions.