Silicon Graphics shares dive on margin worries

(Reuters) - Concerns about shrinking profit margins at Silicon Graphics International sparked a sell-off in the company's stock that wiped away a quarter of its value, a day after it posted weak quarterly results and slashed its full-year earnings outlook.

Source: http://feeds.reuters.com/~r/reuters/technologyNews/~3/cl4MatmaxA0/us-silicongraphics-shares-idUSTRE81719X20120208

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