Invesco DWA SmallCap Momentum ETF (Invesco Dorsey Wright SmallCap Momentum) 

The fund generally will invest at least 90% of its total assets in the securities that comprise the underlying index. Strictly in accordance with its guidelines and mandated procedures, the index Provider selects securities of small capitalization companies trading on U.S. exchanges for inclusion in the index, pursuant to a proprietary methodology that is designed to identify securities that demonstrate powerful relative strength (or momentum) characteristics.