AMC Entertainment Holdings, Inc. (doing business as AMC Theatres, originally an abbreviation for American Multi-Cinema; often referred to simply as AMC and known in some countries as AMC Cinemas or AMC Multi-Cinemas) is an American movie theater chain founded in Kansas City, Missouri, and now headquartered in Leawood, Kansas. It is the largest movie theater chain in the world. Founded in 1920, AMC has the largest share of the U.S. theater market ahead of Regal and Cinemark Theatres.