Four Top ETF Funds for the past 30 Days

Looking over the Morning Star ETF Performance Table I find four ETFs with nice performance over the past month in addition to having decent volume. I have been active in the call option contracts for both Ultra Oil & Gas (DIG) and Daily Energy Bull 3X (ERX). Both have performed well over the past month with good company earnings and strong commodity (oil) prices in addition to unrest in the Middle East.