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 World Fuel Services (NYSE: INT) have fallen 10% today after the company released earnings.

So what: After the closing bell yesterday, the company reported fourth-quarter revenue of $9.32 billion and income of $50.1 million, or $0.70 per share. For the full year, revenue grew 80% to $34.6 billion and earnings increased 36% to $199.2 million.

Now what: The hit from the market today seems pretty extreme, considering that earnings per share were actually a penny above expectations. Shares are now trading at 13 times forward earnings, a reasonable price after a decent quarter like this one. I'm not buying today, but keep an eye on future growth because shares might be at a discount right now.

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Fool contributor Travis Hoium does not have a position in any company mentioned. You can follow Travis on Twitter at @FlushDrawFool, check out his personal stock holdings or follow his CAPS picks at TMFFlushDraw.

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