This ETF endeavors to provide substantial current income while diligently protecting the principal investment. Typically, its holdings are primarily focused on corporate debt and U.S. Treasury bonds. However, the portfolio possesses the flexibility to invest in a broader spectrum of debt instruments. These include obligations issued by federal, state, and local governments, along with their associated agencies and instrumentalities; mortgage-backed and asset-backed securities; various corporate debt offerings; repurchase agreements; and other financial instruments exhibiting similar debt-like characteristics. Furthermore, the fund has the discretion to allocate up to one-fifth of its total assets to higher-yielding, below-investment-grade corporate bonds.