Investments You’ve made investments your whole life. Work with us to help make the most of them. Share | Related Content The Rule of 72 Do you know how long it may take for your investments to double in value? The Rule of 72 is a quick way to figure it out. Global vs. International: What’s The Difference? International funds invest in non-U.S. markets, while global funds may invest in U.S. stocks alongside non-U.S. stocks. How Compound Interest Works Use this calculator to better see the potential impact of compound interest on an asset.