Photo: Beyond Neon, via Flickr.

Get ready, Fools. If you own shares of Mattel (NASDAQ:MAT)Advanced Micro Devices (NASDAQ:AMD), or Winnebago Industries (NYSE:WGO), your week could end with your stomach feeling like you just took a ride on the roller coaster above.

That's because all three of these stocks share two things in common: they are all heavily shorted, or have lots of investors betting against their short-term success, and they are all reporting earnings this week. When these two forces combine, volatility is almost always the result. For proof, look at the stocks I singled out last week, which moved an average of 13% following their respective releases.

But don't be (small f) fooled: I don't think you should try and profit from these swings. There's no way to tell whether they will go up or down. Instead, I think long term investors should check out the slideshow below to prepare for the week to come, and investigate what's really worth paying attention to.

Photos: Mattel, AMD, Winnebago.