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) have jumped 12% today after getting a buyout offer.

So what: Innospec (IOSP -1.59%) offered $44-$46 per share for the company in a non-binding all-cash offer. The company will fund the deal through equity financing from a Blackstone fund.

Now what: The proposal tops a previous offer from two private equity firms; TPC's board says they are considering the offer. For investors, it's great news that there's a bidding war, but it may be time to cash out some chips. Shares are currently trading at $45.60, close to the top end of the offer range. Betting on an increased offer is risky and I would be a seller today to reduce the risk of a deal falling through.

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