Thematic Tech Turmoil & Vanguard's ETF Anniversary

CNBC’s Bob Pisani spoke with Jay Jacobs, head of research and strategy at Global X ETFs, DataTrek Research co-founder Nick Colas and Rich Powers, Vanguard’s head of ETF and index product management. They discussed trouble in the thematic ETF arena and how it impacts the broader market. Plus, it's the 20th anniversary of Vanguard's ETF business. In the 'markets 102' portion of the podcast, Bob continues the conversation with Powers from Vanguard.