The Real Cost of a Vacation Home What if instead of buying that vacation home, you invested the money? 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. 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.