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 aviation service provider AAR (NYSE: AIR) rose more than 17% after the company released earnings.

So what: Fiscal-fourth-quarter sales rose 15.5% to $563 million and earnings per share were $0.45 after adjusting for special items. Earnings fell a penny short of estimates and the company also declared a $0.075 dividend.

Now what: Management reiterated guidance for fiscal 2013 of $2.1 billion-$2.2 billion in sales and $1.55-$1.65 per share in earnings. With those results shares are still trading well below 10 times forward earnings and the company has a nice 2.3% dividend yield. Revenue and earnings are about flat for next year so I think shares are priced fairly and wouldn't be moving one way or the other on today's relatively ho-hum earnings report.

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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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