If looking for small cap exposure outside the U.S., three ETFs - with a combined $4.8B AUM - dominate the space. Vanguard's VSS has the widest net with more than 3K securities from both emerging and developed markets. SCZ - from iShares - focuses just on Europe, Australia, and the Far East. WisdomTree's DGS selects from dividend payers. Given the rough year for emerging markets, it's no surprise SCZ is well ahead in the performance battle YTD.