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. Related Content How Boomers and Millennials Differ The YOLO Economy is a focus on experiences over material possessions, prompting Boomers to consider a similar mindset. Investments You’ve made investments your whole life. Work with us to help make the most of them. Choices for Your 401(k) at a Former Employer Individuals have three basic choices with the 401(k) account they accrued at a previous employer.