A smart beta exchange traded fund, the First Trust Energy AlphaDEX ETF (FXN) debuted on 05/08/2007, and offers broad exposure to the Energy ETFs category of the market.What Are Smart Beta ETFs?The ETF industry has traditionally been dominated by products based on market capitalization weighted indexes that are designed to represent the market or a particular segment of the market.Market cap weighted indexes work great for investors who believe in market efficiency. They provide a low-cost, convenient and tr ...