The Nationwide International Index Fund Class R (GIIRX) is a mutual fund that focuses on investing in international stocks. It aims to track the performance of a specific international stock index, providing investors with exposure to a diverse range of companies outside of the United States. This fund is classified as Class R, which typically indicates a lower expense ratio and is designed for retirement accounts. With its ticker symbol GIIRX, this mutual fund offers investors the opportunity to diversify their portfolio and potentially benefit from the growth of international markets.