Nielsen Holdings PLC offers marketing and client analytics services to retailers and media companies. The company specialises in two segments: Buy and Watch. The Buy segment provides retail transactional measurement data and consumer behaviour analytics information to the consumer packaged goods industry. The Watch segment collects and analyses media usage behaviour data for various forms of media, including television, radio, online, and mobile. The generated analytics are used within the media industry to determine advertising inventory values. Maximum revenue comes from the United States of America region.