Twitter's Costolo: User Growth Drives Everything

Sept. 12 (Bloomberg) -- Twitter CEO Dick Costolo discusses his relationship with co-founder Jack Dorsey and the importance of user growth to the company. He spoke in a March 25 interview with Emily Chang on Bloomberg Television's "Bloomberg West." (Source: Bloomberg)

Goldman's Gary Cohn Weighs In on Tech Valuations
54:57 - Gary Cohn, Goldman Sachs's president and chief operating officer, weighs in on tech valuations and the state of financial markets. He speaks with Bloomberg's Emily Chang on "Bloomberg Markets." (Source: Bloomberg)
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