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 medical-device maker Mindray Medical (NYSE: MR) were feeling ill today, down by as much as 14%, after the company reported quarterly earnings results last night.

So what: Third-quarter revenue added up to $218.4 million, while earnings per share were $0.36. Both figures topped the market expectations of $197.9 in sales and $0.33 in earnings per share, so it's unclear what disappointed investors today.

Now what: To top it off, the company has also authorized a $100 million share-buyback program. All segments posted healthy double-digit growth across the board, with the Medical Imaging Systems segment growing the slowest at 24.5%. Following the results, Nomura Securities has reiterated its Buy rating on Mindray Medical with a $34 price target, citing stronger sales growth.

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Fool contributor Evan Niu holds no position in any company mentioned. Check out his holdings and a short bio. Try any of our Foolish newsletter services free for 30 days. We Fools don't 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.