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 Keurig Green Mountain (NASDAQ:GMCR) were pleasing investors today, climbing as much as 17%, and finishing up 13% after a strong second-quarter earnings report. 

So what: The maker of the single-cup Keurig coffee-brewer sped past estimates as sales improved 10%, to $1.1 billion, against analyst expectations of $1.04 billion. Adjusted earnings, meanwhile, jumped from $0.93 to $1.08 a share, well ahead of the consensus at $0.94. CEO Brian Kelley said the quarter demonstrates "the continued opportunity to grow our Keurig system in North America in a very competitive environment," as Keurig has consistently beat earnings estimates in the last year. Sales of both portion packs and brewer systems increased steadily in the quarter, a further sign of Keurig's staying power. 

Now what: Two years after the market wrote off Keurig Green Mountain following the expiration of several patents, the company continues to prove its ability to keep growing. The stock soared earlier this year after the coffee maker announced a partnership with Coca-Cola to sell Coke beverages in the new Keurig Cold system, which is due out next year. Whether the Keurig Cold will be widely adopted remains a mystery, but shares should trade at a premium until it hits the market, as the new brewing system has the potential to be a game changer. 

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Jeremy Bowman has no position in any stocks mentioned. The Motley Fool recommends Coca-Cola and Keurig Green Mountain. The Motley Fool has the following options: long January 2016 $37 calls on Coca-Cola and short January 2016 $37 puts on Coca-Cola. Try any of our Foolish newsletter services free for 30 days. 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 has a disclosure policy.