Investors may be tempted to extrapolate recent returns into the future, which can lead them to abandon their investment philosophy at potentially inopportune times. While negative outcomes are disappointing, investors should view them with the proper perspective and stay the course.

When you leave your server a tip, do you round it to a whole-dollar amount and often in multiples of $5? Does a 60th birthday seem more significant than a 59th? If you answer yes to these questions, you’re not alone. Most of us prefer round numbers.

This preference leads many investors to review results by calendar year and to consider 10-year periods when evaluating long-term returns. People tend to place greater emphasis on the latest period due to recency bias and to extrapolate recent results into the future. For these reasons, we should put recent performance into the proper perspective.

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