The Columbia Overseas Core Fund R Class (COSRX) is a mutual fund that focuses on investing in international companies outside of the United States. This fund aims to provide investors with long-term growth by diversifying their portfolio with a mix of large and mid-cap stocks from various industries and regions around the world. The "R Class" designation indicates that this fund is designed for retirement accounts, offering tax advantages for investors. With a strong emphasis on international markets, the Columbia Overseas Core Fund R Class provides investors with the opportunity to potentially benefit from global economic growth and market trends.