Sunpower (SPWRA) price target cut at Citi. SPWRA price target lowered to $15 from $18. Maintain Sell rating. 2010 and 2011 EPS estimates increased to $1.16 and $1.56, respectively.Sunpower (SPWRA) estimates, target lowered at FBR. Shares of SPWRA now seen reaching $22. Estimates also cut, as the company is realizing lower margins. Market Perform rating.