Earnings season is upon us once again, and that means that we're primed for more volatility -- at least when it comes to shares of Cal-Maine Foods (NASDAQ:CALM)Athenahealth (NASDAQ:ATHN), and Angie's List (NASDAQ:ANGI). That's because all three of these companies are not only reporting earnings, but are heavily shorted, or have lots of investors betting against their short-term prospects.

When these two forces collide, volatility is almost always the result. If you don't believe me, check out the three stocks I highlighted earlier this month, which moved an average of 5% following their respective earnings releases.

But let's be clear: I don't think you should use this information to time the market. There's absolutely no way to know if these big moves will be up or down. Instead, I suggest that current or perspective shareholders of these three companies check out the slideshow below to know what's really worth paying attention to and what's just noise.