The fund generally will invest at least 90% of its total assets in the securities that comprise the underlying index. Strictly in accordance with its guidelines and mandated procedures, S&P Dow Jones Indices, LLC (the “index provider”) compiles, maintains and calculates the underlying index, which is designed to measure the performance of securities of small-capitalization U. S. companies in the energy sector, as defined by the Global Industry Classification Standard (“GICS ® ”).