Pro Medicus is one of the most interesting companies on the ASX - and one of the best performing stocks, having risen around 1,000% in the last five years.

Yesterday, the medical imaging software company announced record revenue and profit, off the back of a stack of new contracts, particularly in the US. 

But while its share price initially rose, it closed down more than three per cent - a consequence of the stock being priced to perfection, and the result being just a touch below expectations.

Dr Sam Hupert speaks to Ausbiz's Nadine Blayney about the result, staying ahead of the competition, and succession planning at the business he co-founded 40 years ago.

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You can watch this interview with Dr Sam Hupert here.