We recently came across an article on Benzinga titled "Under The Hood: A Slice of PIE", where emerging market ETFs are discussed including the PowerShares DWA Emerging Markets Technical Leaders Portfolio (PIE).  While the Vanguard MSCI Emerging Markets Index Fund (VWO) and the iShares MSCI Emerging Markets Index Fund (EEM) are the two largest ETFs in the emerging market space, PIE is the one with higher return.  PIE is implemented based on relative strength strategy that is rebalanced every quarter.   To get more information on PIE, click here.