A view of last year's Kentucky Derby at Churchill Downs.
A view of last year's Kentucky Derby at Churchill Downs. - 
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Horse racing’s Triple Crown kicks off Saturday with the Kentucky Derby at Churchill Downs. It’s been a good year for the racetrack’s parent company, whose stock has risen 30 percent, double last year’s gains in the S&P 500. These days though, Churchill Downs Inc. doesn’t really resemble a racetrack company.

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