WPP

WPP plc is a British multinational communications, advertising, public relations, technology, and commerce holding company headquartered in London, England. It was the world's largest advertising company, as of 2019. WPP plc owns many companies, which includes advertising, public relations, media, and market research networks such as AKQA, BCW, CMI Media Group, Essence Global, Finsbury, Grey, Hill+Knowlton Strategies, Mindshare, Ogilvy, Wavemaker, Wunderman Thompson, and VMLY&R. It is one of the "Big Four" agency companies, alongside Publicis, Interpublic Group of Companies, and Omnicom. WPP has a primary listing on the London Stock Exchange, and is a constituent of the FTSE 100 Index.