An employee works near a sign at Twitter headquarters in San Francisco, California October 4, 2013. Twitter Inc, racing toward the largest Silicon Valley IPO since Facebook Inc's 2012 coming-out ... more 
An employee works near a sign at Twitter headquarters in San Francisco, California October 4, 2013. Twitter Inc, racing toward the largest Silicon Valley IPO since Facebook Inc's 2012 coming-out party, hopes to woo investors with rip-roaring revenue growth despite having posted big losses over the past three years. The eight-year-old online messaging service gave potential investors their first glance at its financials on Thursday when it publicly filed its IPO documents, setting the stage for one of the most-anticipated debuts in over a year. REUTERS/Robert Galbraith (UNITED STATES - Tags: SCIENCE TECHNOLOGY BUSINESS) less 
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Reuters | Photo By ROBERT GALBRAITH / REUTERS
Fri, Oct 4, 2013 3:12 PM EDT