Iowa Racing and Gaming Administrator, Brian Ohorilko, says his office was notified of the deal Tuesday morning. Sioux City, Iowa - The company that owns the historic site of the Kentucky Derby has announced a deal to purchase the assets of the company that owns the Hard Rock Casino in Sioux City.Ĭhurchill Downs Incorporated says it has entered an agreement to buy the assets of Peninsula Pacific Entertainment for $2.48 billion.