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 U.S. Airways Group (NYSE: LCC) jumped 10% late in the day today after bouncing around in early trading.

So what: The stock is trading higher after the company announced that its July unit revenue rose 8% and traffic increased 4.9%. Part of the unit revenue increase is thanks to increased ticket prices that were implemented earlier this year.

Now what: This is good news, but it could be a bit of a dead-cat bounce, as shares have tanked since early July. This could help end the skid, but I still wouldn't have any confidence to jump into the shares. Airline stocks are extremely risky, and with economic growth uncertain, I'm inclined to look for safer investments.

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