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This Metric Says You're Smart to Own Iron Mountain

http://www.fool.com/investing/general/2012/06/15/this-metric-says-youre-smart-to-own-iron-mountain.aspx

Seth Jayson
June 15, 2012

There's no foolproof way to know the future for Iron Mountain (NYSE: IRM  ) or any other company. However, certain clues may help you see potential stumbles before they happen -- and before your stock craters as a result.

A cloudy crystal ball
In this series, we use accounts receivable and days sales outstanding to judge a company's current health and future prospects. It's an important step in separating the pretenders from the market's best stocks. Alone, AR -- the amount of money owed the company -- and DSO -- the number of days' worth of sales owed to the company -- don't tell you much. However, by considering the trends in AR and DSO, you can sometimes get a window onto the future.

Sometimes, problems with AR or DSO simply indicate a change in