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 TPC Group (Nasdaq: TPCG) jumped as much as 13% today after the company released a strong earnings report.

So what: Fourth-quarter revenue grew 18% to $575 million, mostly due to a 29% increase in prices. Net loss for the quarter was $18.4 million, or $1.18 per share -- a bad number, but it was only $0.02 less than estimates.

Now what: The market obviously wasn't expecting much and is likely looking past the fourth quarter to the company's 2012 outlook. Management said the weak demand experienced in the fourth quarter has abated and prices are moving higher. I would like to see this improvement hit the books instead of buying on a bad quarter, so keep an eye on how profits trend in the next few quarters.

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