CNBC's Bob Pisani spoke with Thomas Gorman, attorney at Dorsey and Whitney, Dave Nadig, Financial Futurist at ETF Trends, and Kim Arthur, CEO of Main Management. FINRA recently raised the alarm on exposing retail investors to complex products like leveraged and inverse ETFs, options, and even bitcoin futures ETFs ... more and more regulators are warning the brokerage community to be careful about recommending the products and asking whether more rules and vetting are necessary. For instance, should retail traders be required to take tests before they allowed to trade these products? In the ‘Markets 102’ portion of the podcast, Bob continues the conversation with Dave Nadig from ETF Trends.