RKO Pictures is a company in the United States that makes and sells movies. It was first known as RKO Radio Pictures, Inc. RKO was an acronym for Radio-Keith-Orpheum, the original parent company of RKO Radio Pictures. It was one of the Big Five studios of Hollywood's Golden Age. The company was made by the merger of the Keith-Albee-Orpheum (KAO) theater chain and the Film Booking Offices of America (FBO) studio in October 1928. It was put together by David Sarnoff of RCA. His goal was to create a market for RCA's photophone, which was their sound-on-film technology. By the mid-1940s, the studio was under the control of investor Floyd Odlum.