With cable financial-news programs, stock newsletters and tip sheets, and investment Web sites, you'd think that investors watch their stock portfolios 24 hours a day, seven days a week.

Such mega-monitoring would be overkill. True, stocks require more attention than mutual funds do. And in a volatile market, changes can happen quickly. Still, the managing of your stock portfolio comes down to making sure your stocks continue to meet your investment criteria. 

Here's how to monitor your stock portfolio without turning it into a full-time job.

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