Bloomberg Radio host Barry Ritholtz speaks with Eric Balchunas, a senior ETF analyst at Bloomberg who has more than a decade of experience working with ETF data, designing new functions and writing ETF research for the Bloomberg Terminal. Balchunas also contributes articles, feature stories and blog posts on ETFs for Bloomberg.com and appears each week on Bloomberg TV and Bloomberg Radio to discuss ETFs. His latest book is "The Bogle Effect: How John Bogle and Vanguard Turned Wall Street Inside Out and Saved Investors Trillions." See omnystudio.com/listener for privacy information.