The fund normally invests at least 80% of its net assets, plus the amount of borrowings for investment purposes, if any, in issuers domiciled, or having their principal activities, in the United States, at the time of investment or other instruments with similar economic characteristics. It will only invest in U.S. traded companies, which may include companies incorporated outside the U.S. which conduct a significant portion of their activities in the U.S. and are considered U.S. companies in the Russell U.S. indices.