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RIM up on Goldman upgrade

The BlackBerry smartphone maker's shares surged 4% to 11.54 after Goldman Sachs upgraded its rating on Research In Motion's (RIMM) stock to buy from neutral, after positive reviews for the company's new BlackBerry 10 operating system, slated for release in early '13. RIM shares jumped 13.6% Fri., Nov. 23, after analysts put out encouraging reports on BlackBerry 10. RIM plans to roll out the delayed operating system in multiple countries Jan. 30, with 2 new handsets to ship shortly after.