Leah Wald, Valkyrie Investments CEO, joins ‘The Exchange to discuss rolling out the first-ever bitcoin miners ETF on the Nasdaq. For access to live and exclusive video from CNBC subscribe to CNBC PRO: https://cnb.cx/2NGeIvi » Subscribe to CNBC TV: https://cnb.cx/SubscribeCNBCtelevision » Subscribe to CNBC: https://cnb.cx/SubscribeCNBC Turn to CNBC TV for the latest stock market news and analysis.