Under normal circumstances, at least 80 percent of the Funds net assets, plus borrowings for investment purposes, will be invested in the securities of U.S. companies. For purposes of this 80 percent policy, U.S. companies are companies that, at the time of purchase, have (i) U.S. assets greater than or equal to 50 percent of total assets or (ii) U.S. revenue greater than or equal to 50 percent of total revenue. The Fund will generally use a replication strategy to achieve its investment objective, meaning it generally will invest in all of the component securities of the Index in approximately the same proportion as in the Index.