The Global Sustainability Fixed Income ETF invests in a broad portfolio of investment grade debt securities (e.g., rated BBB or above by S&P Global Ratings (S&P) or Fitch Ratings Ltd. (Fitch) or Baa3 or above by Moodys Investors Service, Inc. (Moodys)) of U.S. and non U.S. corporate and government issuers, including mortgage-backed securities, while excluding or underweighting securities of corporate and certain non overeign government issuers based upon the Portfolios sustainability impact considerations. At times, the Portfolio may invest a majority of its net assets in securities of U.S. and non U.S. government issuers. The Advisor expects that the Portfolio will primarily invest in the obligations of issuers that are in developed countries. Under normal circumstances, the Portfolio invests at least 40% of its net assets in non U.S. fixed income securities (unless market conditions are not deemed favorable by the Advisor, in which case the Portfolio would invest at least 30% of its net assets in non U.S. fixed income securities).