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. Share | Related Content Are Alternative Investments Right for You? With alternative investments, it’s critical to sort through the complexity. Asset Allocation Consider how your assets are allocated and if that allocation is consistent with your time frame and risk tolerance. 5 Smart Investing Principles Principles that can help create a portfolio designed to pursue investment goals.