The Columbia Acorn International Select Class I (ACFFX) is a mutual fund that focuses on investing in international companies with strong growth potential. It aims to provide investors with long-term capital appreciation by selecting high-quality, undervalued stocks from a diverse range of industries and countries. This fund is managed by Columbia Threadneedle Investments and has a minimum investment requirement of $2,000. With a focus on international markets, the Columbia Acorn International Select Class I offers investors the opportunity to diversify their portfolio and potentially benefit from global economic growth.