Lessons From Solar ETFs’ Slide

Last week was an eventful one for the Guggenheim Solar ETF (NYSEArca: TAN) and the Market Vectors Solar Energy ETF (NYSEArca: KWT). TAN and KWT slid 8% and 7%, respectively, with the bulk of those declines attributable to controversial Hanergy Thin Film Power Group. Shares of Hanergy plunged 47% in...