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 parts manufacturer Timken (NYSE: TKR) fell 21% today after the company released earnings.

So what: Revenue of $1.3 billion fell well short of the $1.45 billion analysts expected and was up just 1% from a year ago. Net income, however, was $183.6 million, or $1.86 per share, well above estimates of $1.49 from analysts.

Now what: Second-quarter results were mixed but the thing investors are focusing on today is full-year earnings guidance, which the company lowered by $1.30 to a range of $5.00-$5.30 per share. At that level shares still trade at below seven times 2012 earnings; even on the low end, it's a reasonable value right now. The company may not be growing rapidly but it's still growing and with a P/E ratio of just seven I think investors are getting a good value and shares can move higher from here.

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