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: So far today, shares of Boise (NYSE: BZ) have fallen as much as 5%. That's the bad news. The good news is that they've also swung as high as an 11% gain. Don't you just love roller coasters?

So what: As volatile as today's been, it's got nothing on what we saw yesterday, when Boise dropped 18% in response to an earnings miss. Checking into the story yesterday, fellow Fool Travis Hoium pronounced the sell-off "a great buying opportunity." Today, it seems investors are starting to come around to that point of view, too.

Now what: It's about dang time. Listen, Fools -- Boise shares today cost you only 5 times trailing earnings. Wall Street expects Boise to grow those earnings 20% per year for the next five years. No-brainers don't come much obvious-er than this.

Will Boise keep bouncing? Add it to your Fool Watchlist and find out.