Owners of Invesco's QQQ voted to convert the product into an open-ended structure, which could unlock hundreds of millions in annual revenue for the asset manager. On Bloomberg "ETF IQ", Katie Greifeld, Scarlet Fu and Eric Balchunas speak with Brian Hartigan, global head of ETFs at Invesco, about the vote and what it means for the future of the world's fifth-largest ETF. (Source: Bloomberg)