What Can a Million Dollars Buy You? $1 million in a diversified portfolio could help finance part of your retirement. 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. Mutual Funds vs. ETFs Exchange-traded funds have some things in common with mutual funds, but there are differences, too. 5 Smart Investing Strategies Getting what you want out of your money may require the right game plan.