Solar ETF Rally: More Gas in the Tank

Put simply, the Guggenheim Solar ETF (NYSEArca: TAN) and the Market Vectors Solar Energy ETF (NYSEArca: KWT) have both more than doubled this year. That means TAN and KWT, in that order, are the two best non-leveraged sector ETFs in 2013. TAN and KWT have gotten help from a variety of places. One...