A smart beta exchange traded fund, the Invesco S&P SmallCap 600 Pure Value ETF (RZV) debuted on 03/01/2006, and offers broad exposure to the Style Box - Small Cap Value category of the market.What Are Smart Beta ETFs?The ETF industry has long been dominated by products based on market cap weighted indexes, a strategy created to reflect the market or a particular market segment.A good option for investors who believe in market efficiency, market cap weighted indexes offer a low-cost, convenient, and transpar ...