Jenna is approaching 62 with nothing saved for retirement and $150,000 from her late mother sitting in a low-yield savings account. Every 7 years in a mutual fund, that $150,000 doubles. By 69 it's $300,000; by 76, $600,000. The money she's letting idle in a bank account is costing her a fortune in lost compounding. The first step: sit down with a SmartVestor Pro and learn before you invest.