The investment seeks investment results that correspond generally to the price and yield performance, before fees and expenses, of the Northern Trust Quality Large Cap IndexSM. The underlying index is designed to reflect the performance of a selection of companies that, in aggregate, possess greater exposure to quality, value and momentum factors relative to a universe of publicly-traded U.S. large-capitalization equity securities. The fund generally will invest under normal circumstances at least 80% of its total assets (exclusive of collateral held from securities lending) in the securities of its underlying index.