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 Tractor Supply (NASDAQ:TSCO) jumped 10% today, after the company released earnings.

So what: Sales rose 3.7%, to $1.29 billion, in the quarter, coming in just ahead of estimates. But earnings jumped 15.6%, to $1.11 per share, which was well ahead of the $1.03 estimate, giving a jolt to the stock.  

Now what: Management expects continued growth of $5.07 to $5.17 billion in revenue next year, and earnings of $4.32 to $4.40 per share. The continued strong operations are good for the company, but I'm a little worried about paying up for the stock. Shares closed at $103.67 today, indicating a 23.6 forward P/E ratio at the high end of estimates, a steep price even with good growth. I'll stay away for now, and wait for a better value in the stock.

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Fool contributor Travis Hoium has no position in any stocks mentioned. The Motley Fool has no position in any of the stocks mentioned. 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.