Time to hunker down, Fools. If you own shares of Winnebago Industries (NYSE: WGO), Blackberry (NASDAQ: BBRY), or Barnes & Noble (NYSE: BKS), get ready for a wild week ahead.

That's because all three of these companies are heavily shorted -- people are betting their share prices will fall -- and all three are reporting earnings. This is a recipe for volatility. If you don't believe me, take a peek at the three companies I highlighted earlier this month, which moved an average of 10% following the release of their respective quarterly reports.

But I don't think you should try and turn a quick buck on this volatility. That's because there's no way to know if these stocks are going to go up or down. Instead, I encourage current shareholders to check out the slideshow below to figure out what really matters, and what's just noise.

The $18 million fortune about to be ripped from your credit card
Bad news for your credit card company. The plastic in your wallet may soon be gone forever. And once it is, it could cost Capital One, American Express, Chase, and all the rest as much as $18 million a day! Good news for you. Because when you're finally able to say "goodbye" to the cards stuck in your wallet, a little-known tech company responsible for finally putting an end to plastic could hand its investors life-changing profits. A revealing investor alert from The Motley Fool has the full story. Click here to get it now.