Twitter Takes Flight: What Have They Figured Out?

July 29 (Bloomberg) -- Debra Aho Williamson, a social media analyst at eMarketer, and Bloomberg's Paul Sweeney comment on Twitter's user growth and business strategy. They speak with Cory Johnson on "Taking Stock." (Source: Bloomberg)
Why Energy Is Bull Market's Last Great Opportunity
23:56 - Tobias Levkovich, chief U.S. equity strategist at Citigroup, and Willem Buiter, chief economist at Citigroup, discuss the market opportunity of the energy sector, the continued bull market run and what now constitutes normal equity returns. They speak on "Bloomberg Surveillance." (Source: Bloomberg)
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