The Northeast’s Trusted Real Estate & Financial Information Source Since 1872. The Warren Group collects and compiles data on real estate sales and ownership throughout the northeast. We offer a range of real estate products, information services and printed and online publications, including the weekly newspaper Banker & Tradesman and the monthly magazine The Commercial Record. We also produce and organize trade shows and events for a variety of industries, including bankers, mortgage brokers, credit unions and lawyers. Based in Boston, the company was established in 1872 and is now in its fourth generation of family ownership and management. The core business has three different segments: publishing, data solutions and events.