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: Yesterday, we regaled you with the story of how one subject of a KeyBanc Capital Markets downgrade -- Ferro (NYSE: FOE) -- took it on the chin when investors panicked over the analyst's comments. But if you recall, Ferro wasn't the only specialty chemicals maker that got "keyed" yesterday. Quaker Chemical (NYSE: KWR), Omnova Solutions (NYSE: OMN), PolyOne (NYSE: POL), and Kraton Performance Polymers (NYSE: KRA) all got hit, too.

Today, one of these lucky five is bouncing right back from its funk: Kraton shares are up 10%, making the stock literally one of the best performers on the NYSE today.

So what: Several of the other stocks panned by KeyBanc yesterday enjoyed bounces today as well (Omnova being the sole, sad exception). However, there doesn't seem to be a good reason for any of them. It's a bounce off a hard selloff -- plain and simple.

Now what: As such, I wouldn't read too much into Kraton's suddenly discovery of the mystery of flight. I mean, this stock has lost 40% of its value in the past 52 weeks, and not for no good reason. While Kraton looks cheap at 5.5 times earnings, that P/E ratio doesn't factor in the company's subpar growth rate (8% projected for the next five years), its mountain of debt (in excess of $300 million), or the fact that GAAP earnings at the company overstate true free cash flow by a factor of two. Put it all together, and if I were a Kraton shareholder, I'd be using today's bounce as a chance to cash out before the stock's slide resumes.

Disagree? Think Kraton's run is just getting started? Add it to your Fool Watchlist and see if you're right.