When done right, growth investing can be very profitable. High-quality growth companies will execute on their plans and drive revenue and the stock price higher over time.

The pet health insurer Trupanion (NASDAQ: TRUP) has done that for the last eight years and counting. This explains how a $10,000 investment in the stock when it went public in 2014 would now be worth just shy of $53,000 today -- far more than the $22,000 that the same investment over the same time would have yielded from the Nasdaq Composite. 

And it doesn't appear as if Trupanion will be running out of steam anytime soon. Let's explore the company's fundamentals and valuation.

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Source Fool.com