The fund is an actively managed exchange-traded fund ("ETF") that normally invests at least 80% of its net assets, including any borrowings for investment purposes, in a diversified portfolio of fixed income instruments. The principal investments of the fund include corporate bonds, U.S. government and agency securities, master-limited partners ("MLPs") (tied to energy-related commodities), private debt, foreign sovereign bonds, convertible securities, bank loans, asset-backed securities, mortgage-backed securities, and cash equivalent instruments.