The Invesco Russell 1000 Dynamic Multifactor ETF (OMFL) made its debut on 11/08/2017, and is a smart beta exchange traded fund that provides broad exposure to the Style Box - Large Cap Growth 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.Market cap weighted indexes work great for investors who believe in market ef ...