Los 40 Principales

Los 40 Principales, also known as LOS40 and Los Cuarenta, is a privately owned entity headquartered in Argentina. It operates as part of the global LOS40 network, which is owned by PRISA Media (Grupo PRISA), with SER Comunicacion listed as a parent company. In Argentina, the station is managed under a brand licensing agreement by the Nostalgie Américas group (associated with Santamaría Media). The company, founded in 1987, employs approximately 60 individuals and reported $10.2M in revenue as of 2023. It specializes in broadcast television and radio, operating primarily as a commercial radio station and multimedia brand focused on pop, urban, and contemporary hit radio (CHR). Headquartered specifically in Buenos Aires, the station broadcasts on the 105.5 MHz frequency (FM) and reaches a national audience through a network of affiliates and a digital ecosystem.