Inflation and Your Portfolio Even low inflation rates can pose a threat to investment returns. 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. Getting a Head Start on College Savings A few strategies that may help you prepare for the cost of higher education. 5 Smart Investing Strategies Getting what you want out of your money may require the right game plan.