IYG offers pure exposure to the financial services segment. The index is composed of stocks from the Dow Jones U.S. Index that are defined by the issuer to fall under the financial services sector. With a broad interpretation of the segment, IYG is a representation of the heavily concentrated financial services market that includes banks, asset managers, consumer finance, specialty finance, investments services, and mortgage finance. The fund invests across the market-cap spectrum in the United States. The index is reconstituted annually, subject to quarterly reviews.