Following recent bank failures and ongoing market volatility, it may be tempting to try to time the market. Because time in the market has shown to be more important than timing the market. But despite the fund's impressive performance, the typical shareholder lost 2.86% a year over that period, Morningstar found. In my view, it has to do with when investors buy and sell. When investors buy after a strong run of performance, they are investing when a fund is relatively expensive.

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