This class action involves allegations that Defendant National Association of Realtors have anticompetitive rules that require home sellers to pay commission to the home buyer’s broker. Plaintiffs also allege that Defendants Home Services of America, Inc.; BHH Affiliates, LLC; HSF Affiliates, LLC; Keller Williams Realty, Inc.; Realogy Holdings Corp.; and RE/MAX, LLC enforce those rules through anticompetitive practices. Plaintiffs challenge rules in both the National Association of Realtors Handbook and Code of Ethics that allegedly require home sellers to make a blanket offer of compensation to any potential buyer’s broker as a condition of listing their home on the following multiple listing services: Heartland Multiple Listing Service, Columbia Board of Realtors, Mid America Regional Information System, and Southern Missouri Regional Multiple Listing Service. Class members are people who used a Defendant in the sale of their home that was listed on one of the four multiple listing services from April 29, 2015 to present. Plaintiffs allege violations of the Sherman Act, 15 U.S.C. § 1, the Missouri Merchandising Practice Act, Mo. Rev. Stat. § 407.020, and the Missouri Antitrust Law, Mo. Rev. Stat. § 416.031. Defendants deny Plaintiffs’ allegations.