 WASHINGTON--BUSINESS WIRE--CoStar Group, Inc. NASDAQ: CSGP, the leading provider of commercial real estate information, analytics and online marketplaces announced today the appointment of Jay Lybik as National Director of Multifamily Analytics. The hire will elevate the companys already powerful analytics in the U.S. multifamily sector, adding value for CoStar Group clients and the commercial real estate industry. We are thrilled to have a multifaceted leader such as Jay join the team, 