"Bloomberg ETF IQ" focuses on the opportunities, risks and current trends tied to the trillions of dollars in the global exchange traded funds industry. Bloomberg's Kailey Leinz, Katie Greifeld and Eric Balchunas speak to Todd Rosenbluth, head of research at VettaFi, and Matthew Bartolini, head of SPDR Americas research for State Street Global Advisors. This week they discuss sector outflows, the structuring of ESG ETFs and momentum rebalancing. (Source: Bloomberg)