KEY POINTS
  • The company has increased by 243 percent in the last five years thanks to new ventures and digital growth.
  • Churchill Downs CEO says the Kentucky Derby is not the company's most profitable venture, but it has allowed them to enter the online space and grow with new companies.

Large-scale digital growth has helped Churchill Downs, the company that owns the Kentucky Derby, has helped feed a massive expansion in the last five years, Churchill's top executive told CNBC in an interview.

"Day-to-day racing, that's not the greatest business in the world," CEO William Carstanjen told CNBC on "Power Lunch" this week. Boosted by digital, Churchill's has seen explosive growth of more than 200 percent, he said.