The investment seeks investment results that correspond generally to the price and yield performance, before fees and expenses, of the Northern Trust US Corporate Bond IndexSM. The underlying index reflects the performance of a broad universe of US-dollar denominated investment grade corporate bonds that can potentially deliver a higher total return than the overall investment grade corporate bond market, as represented by the Northern Trust US Investment Grade Corporate Bond Index SM. The fund generally will invest at least 80% of its total assets in the securities of its index. The fund is non-diversified.