Market Vectors Brazil Small Cap ETF ( BRF) -3.3% ETFs designed to target the Brazilian marketplace are lagging today, with the small cap-focused BRF, leading the retreat. As I've mentioned previously, BRF is well designed for investors looking to gain access to the nation's blossoming middle class. It is important to note, however, that small cap funds like BRF tend to behave in a more volatile fashion than those focused on a nation's market goliaths. Elsewhere in Latin America the iShares All Peru Capped Index Fund ( EPU) is scoring impressive gains. Global X Uranium ETF ( URA) -2.5% The uranium ETF continues to swing wildly as investor sentiment remains sour towards nuclear energy. Although both are designed to capture this slice of the energy spectrum, the Market Vectors Nuclear Energy + Uranium ETF ( NLR) is relatively flat today. All prices as of 2:15 PM EST Written by Don Dion in Williamstown, Mass.