Wolfgang Koester, CEO of FiREapps, on bitcoin futures and why he sees the U.S. issuing a digital dollar in 2018.  John Tozzi, healthcare reporter for Bloomberg, with a look at the history of the little blue pill that changed sex, as Viagra goes generic.  Tim Ghriskey, CIO of Solaris Asset Management, on why tax reform will spur corporate buybacks instead of growth.  John Wobensmith, CEO of Genco Shipping (NYSE:GNK), on why the global drybulk recovery is just starting. 

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