Michael Nathanson, MoffettNathanson Founding Partner & Senior Research Analyst, says Elon Musk's $43 billion purchase offer is a "gift" to Twitter, and suggests the social-media giant "take the money and run." Jens Nordvig, Exante Data Founder & CEO, says the move in the Chinese yuan is the "most dramatic" since 2015. Subadra Rajappa, Societe Generale Head of U.S. Rates Strategy, says best trade may be to move into cash. Andrew Hollenhorst, Citi Chief U.S. Economist, discusses the outlook for the economy and Federal Reserve policy.