Nielsen operates as an information and measurement company. The company provides media and marketing information, analytics, and manufacturer and retailer expertise about what and where consumers buy, read, watch and listen. Its Buy segment provides data on retail measurement services, such as market share and competitive sales volumes; insights into distribution, pricing, merchandising, and promotion; consumer panel measurement, which offers insight into shopper behavior and customer segmentation; and consumer intelligence and analytical services for decision making in development and marketing cycles. The companys Watch segment provides viewership and listening data, and analytics primarily to the media and advertising industries for television, radio, digital and mobile viewing, and listening platforms. It offers national and local television audience measurement services, including more than one screen, unduplicated reach, cause and effect analysis, and program viewing behavior testing; digital audience measurement services, such as digital media and market research, audience analytics, and social media measurement; mobile measurement services comprising measurement and consumer research for telecom and media companies; and advertiser solutions. In addition, it provides radio audience measurement services, such as estimating the size and composition of national radio audiences, and audiences of network radio programs and commercials, as well as information on consumers lifestyles, shopping patterns, and use of media to radio, advertisers and advertising agencies, local cable television companies, national cable and broadcast television networks, and out-of-home media sales organizations. The company was formerly known as Nielsen Holdings N.V. and changed its name to Nielsen N.V. in May 2014. Nielsen N.V. is a subsidiary of Valcon Acquisition Holding (Luxembourg) S.á.r.l.