Churchill Downs is a gambling company that operates the Churchill Downs racetrack, which hosts the Kentucky Derby. The company operates three business segments: racing, gaming, and online operations. Churchill Downs owns and operates racetracks and casinos across the United States. The company also operates a number of online wagering businesses. Churchill Downs owns Big Fish Games, a casual games developer, which produces video games for mobile devices and computers. The company earns the vast majority of its revenue in the United States.