What’s Your Investment IQ? Share | Have A Question About This Topic? Name Email Address Message Thank you! Oops! 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. Rebalancing Your Portfolio Over time, different investments' performances can shift a portfolio’s intent and risk profile. Rebalancing may be critical. 5 Smart Investing Principles Principles that can help create a portfolio designed to pursue investment goals.