(Corrects spelling of Michael Crinieri's name) (Bloomberg) -- Michael Crinieri, global head of Goldman Sachs’ ETF strategy, and Gary Chropuvka, head of Goldman’s customized beta strategies, discuss the launch of Goldman’s two ‘active beta’ ETFs (tickers: GEM and GSLC). The ETFs have more than doubled in size since their launch in September. Bloomberg’s Catherine Cowdery reports on exchange-traded funds.