Goldman Sachs will pay $2 billion to buy Innovator Capital Management, a deal that combines the bank with an issuer of a relatively new type of exchange-traded fund that has caught the attention and ire of some on Wall Street. Innovator — which has over $28 billion of assets under supervision across more than 150 ETFs — specializes in defined-outcome ETFs. Bloomberg's Emily Graffeo reports on "Bloomberg ETF IQ" with Katie Greifeld and Eric Balchunas. (Source: Bloomberg)