That's about 25% of money in all 401(k) plans. Typically, as long as you have $5,000 invested in your employer's plan, you can leave it there when you leave. A 401(k) plan comes with limited investment options, and the ones in your old plan may not be very attractive. This makes a lot of sense for people who gravitate toward simple, passive investing strategies, which tend to be available in just about every 401(k) plan, says Betz. A 401(k) is just about always going to come with a limited menu of investment options, and maybe this one is full of high-fee, low-performing mutual funds.

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Persons: switchers, that's, Jason Betz, it's, Yoav Zurel, Betz Organizations: Ameriprise, Employers