Pisani: 'Shark' Kevin O'Leary dives into ETF biz By: CNBC.com News July 14, 2015 at 07:00 AM EDT How big are ETFs these days? Even Kevin O'Leary of "Shark Tank" is getting into the game. Read More >> Related Stocks: Dividend Appreciation ETF Vanguard High Dividend Yield Vanguard ETF