Dick Costolo, Twitter's Chief Executive, arrives at Morgan Stanley as part of the Twitter Roadshow in advance of the firm's IPO, in New York, October 25, 2013. Seeking to avoid a repeat of Facebook ... more 
Dick Costolo, Twitter's Chief Executive, arrives at Morgan Stanley as part of the Twitter Roadshow in advance of the firm's IPO, in New York, October 25, 2013. Seeking to avoid a repeat of Facebook Inc's much-maligned public debut, Twitter Inc revealed more modest ambitions, saying its initial offering would raise up to $1.6 billion and value the company at up to about $11 billion. REUTERS/Carlo Allegri (UNITED STATES - Tags: BUSINESS) less 
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Reuters | Photo By CARLO ALLEGRI / REUTERS
Fri, Oct 25, 2013 10:30 AM EDT