These were the top performing ETFs of the week.
MLPO — Credit Suisse S&P MLP Index ETN +90.98%
BOIL — ProShares Ultra Bloomberg Natural Gas +36.09%
GAZ — iPath Series B Bloomberg Natural Gas Subindex Total Return ETN +17.45%
UNG — United States Natural Gas Fund LP +17.02%
GDXU — MicroSectors Gold Miners 3X Leveraged ETN +12.82%