Solar ETFs’ Holdings See Spike in Short Interest

The Guggenheim Solar ETF (NYSEArca: TAN) and the Market Vectors Solar Energy ETF (NYSEArca: KWT) are two of the best-performing non-leveraged sector ETFs this year. TAN and KWT are up 69.2% and 41.7% year-to-date, respectively. Solar stocks have gotten a lift from high oil prices and news that...