The Global Core Plus Fixed Income ETF seeks to achieve its investment objective by investing in a universe of U.S. and foreign fixed income securities. The Portfolio may invest in obligations issued or guaranteed by the U.S. and foreign governments, their agencies and instrumentalities, including mortgage-backed securities, corporate debt obligations, bank obligations, commercial paper, repurchase agreements, money market funds, securities of domestic or foreign issuers denominated in U.S. dollars but not trading in the United States, and obligations of supranational organizations. The Portfolio may purchase or sell mortgage-backed securities on a delayed delivery or forward commitment basis through the to-be-announced (TBA) market. At the present time, the Advisor expects that the Portfolio will primarily invest in the obligations of issuers that are in developed countries. However, in the future, the Advisor anticipates investing in issuers located in other countries as well, which may include emerging markets.