The investment seeks investment results that correspond generally to the performance, before fees and expenses, of the Bloomberg Barclays MSCI US Corporate Sustainability SRI Sector/Credit/Maturity Neutral Index. The fund will invest at least 80% of its total assets, but typically far more, in instruments that comprise the underlying index. The index generally aims to keep the broad characteristics of its parent index, the Bloomberg Barclays US Corporate Index (an investment grade corporate bond universe), resulting in a broad investment grade fixed income market exposure with ESG aspects.