Although we don't believe in timing the market or panicking over market movements, we do like to keep an eye on big changes -- just in case they're material to our investing thesis.

What: Shares of leading ambulance-helicopter operator Air Methods (Nasdaq: AIRM) are taking off today, gaining as much as 10.6% on very heavy trading volume.

So what: Last night's fourth-quarter report clearly impressed investors by more than quadrupling earnings year-over-year on 24% higher revenue. The company's medical airlift services are in increasing demand, which is especially impressive considering a 23% increase in revenue per transport.

Now what: Fool analyst Jason Moser calls Air Methods "the coolest health-care stock you'll never buy," and not just because it involves helicopters. Quality management and a never-ending market add up to great business, and today's financial report underscores that fact. The stock is lightly followed and traded even less, but has more than doubled over the last year -- Mr. Market is catching on!

Interested in more info on Air Methods? Add it to your watchlist.

Fool contributor Anders Bylund holds no position in any of the companies discussed here. We Fools may not all hold the same opinions, but we all believe that considering a diverse range of insights makes us better investors. The Motley Fool is investors writing for investors.