 While the largest players in the retail real estate space, like Simon Property Group NYSE: SPG and Realty Income NYSE: O, get most of the attention, there are some big opportunities lurking among the smaller retail REITs. One such opportunity is with Whitestone REIT NYSE: WSR, a shopping center REIT with 59 properties in some of the fastest growing markets in the United States including Phoenix, Arizona and Dallas-Fort Worth, Texas. 