The investment seeks investment results that correspond generally to the price and yield performance, before fees and expenses, of the Northern Trust High Yield Value-Scored US Corporate Bond IndexSM (the underlying index). The fund generally will invest at least 80% of its total assets (exclusive of collateral held from securities lending) in the securities of its underlying index. The underlying index reflects the performance of a broad universe of US-dollar denominated high yield corporate bonds that seeks a higher yield than the overall high yield corporate bond market, as represented by the Northern Trust High Yield US Corporate Bond IndexSM.