The Pacer US Small Cap Cash Cows ETF (CALF) made its debut on 06/16/2017, and is a smart beta exchange traded fund that provides broad exposure to the Style Box - Small Cap Value category of the market.What Are Smart Beta ETFs?Products that are based on market cap weighted indexes, which are strategies designed to reflect a specific market segment or the market as a whole, have traditionally dominated the ETF industry.A good option for investors who believe in market efficiency, market cap weighted indexes ...