Watch the entire interview with ARK Invest's Cathie Wood and Tifin CEO Vinay Nair

ARK Invests' Cathie Wood joins the board of directors for FinTech company Tifin. She joins 'Closing Bell' to discuss the business with Tifin CEO Vinay Nair, as well as her thoughts on where she sees opportunity, deflation financials and Elon Musk.