Here's the Fast Way to Figure Out if You've Got a Good 401(k)

For this episode of Motley Fool Answers , Robert Brokamp and Alison Southwick do a deep dive into perhaps the most popular form of retirement account in America: the 401(k). Between that and similar defined-contribution plans, we were holding $7.7 trillion at the end of 2017 -- a remarkable sum, and yet most people still aren't saving enough.

But our contributions are only one piece of the puzzle: the other big one is return on investment, and in this area, there's wide divergence.