How mutual funds work — the $18.7 trillion industry fueling retirement in the U.S.

Mutual funds are big part of most people's retirement portfolios, especially those with employer-sponsored 401(k)s. In fact, an estimated 100 million Americans own a mutual fund, as of 2017. Here's how they work, and how to avoid the most common pitfall with mutual funds.
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Thu, May 2 20195:30 AM EDT
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