Calder became a Churchill Downs, Inc. company in 1999 becoming an established venue for entertainment in the city of Miami Ga ... rdens, Florida. Calder Casino was opened in January 2010 offering over 1,000 slot machines with wider aisles, higher ceilings, in a 100% non-smoking facility. Churchill Downs Incorporated (CDI) (NASDAQ: CHDN), headquartered in Louisville, Ky., owns the world-renowned Churchill Downs Racetrack, home of the Kentucky Derby. Additional information about CDI can be found online at www.churchilldownsincorporated.com. read more