The fund seeks to achieve its investment objective by investing under normal circumstances at least 80% of its total assets in the component securities of the RAFI ESG US Index. The underlying index is constructed by RAFI Indices, LLC using a rules-based approach within publicly traded U.S. equities to create an integrated ESG strategy which overweights companies that rate well across various ESG themes and excludes companies with a major involvement in industries such as tobacco, gaming, weapons and fossil fuels.