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 shoemaker Skechers (NYSE:SKX) jumped 10% today after being upgraded by an analyst.

So what: Susquehanna analyst Tom Haggerty upgraded the stock to positive from neutral on projections of improving sales next year. The analyst set his price target at $22 per share for the next year.

Now what: We don't put too much stock in an analyst's upgrade or downgrade because the pop or drop often doesn't last long. Skechers has had a rough 2012 and is likely to post a loss for the year. A lot of improvement needs to take place in 2013 for it to swing to a profit, and that's just too much risk for me to buy into today, especially after the stock jumped.

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This article represents the opinion of the writer, who may disagree with the “official” recommendation position of a Motley Fool premium advisory service. We’re motley! Questioning an investing thesis -- even one of our own -- helps us all think critically about investing and make decisions that help us become smarter, happier, and richer.