Learn about our editorial policies Every time you invest in a mutual fund, you're making a choice that could cost or save you tens of thousands of dollars—and you might not even know it.

A staple in employer-sponsored retirement plans, mutual funds can offer instant diversity for a portfolio. Here's a look at ...

Index funds stay the course and can hold onto laggards that an actively managed mutual fund might not. If a company is about to go bankrupt, index fund managers wait for the index to remove the ...