Half of these ETF laggards track commodities inversely, specifically metals and energy. The weakening dollar lit a fire under crude prices in May, causing them to soar 30% to $66.31 a barrel. The falling dollar also boosted demand for gold and silver, whose prices rose 10% and 27%, respectively.
The worst-performing ETF, the PowerShares DB Crude Oil Double Short ETN(DTO), sank 54%. Five other energy funds made the list, including the ProShares UltraShort DJ-UBS Crude Oil Fund(SCO Quote), down 41%; the Direxion Daily Energy Bear 3X Shares ETF(ERY), down 34%; and the Rydex Inverse 2X S&P Select Sector Energy ETF(REC), down 26%.
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